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Total Chimney Solutions

VIEWS: 52 PAGES: 20

									Total Chimney Solutions




                          1
2
Contents



Flues	 	         		3-4    Chimney	Pots					5-7    Ancillary	Products		8	




Flue	Gathering							9	   Firebacks	     				10   Clay	Ridges	    			13
Units	 	        				




One	Coat	Render				14     Chimney	Systems	15      Technical	Notes					16

                                                            1
Introduction
Lagan	Chimney	Systems	is	well	known	for	the	production	of	high	quality	chimney	systems,	firebacks,	flue	liners	and	
traditional	chimney	pots,	which	are	manufactured	using	time	tested	processes.	

Flemings	Fireclays	was	founded	in	1935	and	is	now	a	division	of	Lagan	Brick	Ltd..	We	have	always	recognised	the	
endurance	and	beauty	of	clay.	Lagan	Brick	Ltd.	manufacture	clay	facing	brick,	flues,	chimney	pots	and	firebacks.

To	 keep	 Lagan	 Chimney	 Systems	 at	 the	 forefront	 of	 clay	 technology	 a	 new	 state	 of	 the	 art	 computer	 controlled	
production	facility	has	been	built.	We	offer	a	comprehensive	range	of	clay	products,	all	manufactured	to	the	highest	
european	 standards.	 This	 new	 production	 facility	 is	 amongst	 the	 most	 modern	 in	 Europe	 and	 has	 significantly	
increased	production	and	improved	efficiency.




                                                              2
Every chimney is unique...
and it’s the size that matters... When considering the
construction of a chimney for use with solid fuels, it is
important to firstly establish the size of fireplace opening you
require. From this the flue liner size can be specified.

 f i repl ace o peni ng   f l u e si z e                    cro ss-sect i o nal
      w            h                                        ar ea m m 2
    (mm)          (mm)                                      of flue

  450           550       185 x 185mm int. square liners     34,225
                          210mm int. dia. circular liners     34,640

  500           550       200 x 200mm int. square liners     40,000
                          225mm int. dia. circular liners     39,761

  600           550       225 x 225mm int. square liners     50,625
                          250mm int. dia. circular liners     49,095

  700           600       250 x 250mm int. square liners     62,500

  800           600       300mm int. dia. circular liners    70,686

 1000           600       300 x 300mm int. square liners     90,000



The table above gives an indication as to the
size of flue liner required, relative to the size
of fireplace opening desired. Specifically, the
internal cross-sectional area of the flue lining
should be 15% of the cross-sectional area of                      h
the finished fireplace opening. The fireplace
and flue system can then be constructed in
accordance with Building Regulations.

                                                                                  w
The	general	function	of	a	chimney	flue	is	to	convey	the	products	of	combustion	safely	to	the	atmosphere.	
Chimneys	lined	with	clay	flue	liners	have	truly	stood	the	test	of	time.




                                                             3
Flues

Rebated	Flue	Liner                        Function
                                I
                                          •	   Heat	resistant
                                          •	   Acid	resistant	                     Code          I            H         E
                                          •	   Suitable	for	all	domestic	fuels      FL8         300           330       360
                                        H
                                          •	   50	years	proven	use
                                                                                 Pallet	Size:	27	units

                            E

Rebated	Flue	Liner                        Function
                                I
                                          •	   Heat	resistant
                                          •	   Acid	resistant	                     Code          I            H         E
                                          •	   Suitable	for	all	domestic	fuels      FL7         250           330       300
                                    H     •	   50	years	proven	use
                                                                                 Pallet	Size:	40	units

                            E

Rebated	Flue	Liner                        Function
                                I
                                          •	   Heat	resistant
                                          •	   Acid	resistant	                     Code          I            H         E
                                          •	   Suitable	for	all	domestic	fuels      FL5         200           400       245
                                    H     •	   50	years	proven	use
                                                                                 Pallet	Size:	120	units

                            E

Rebated	Flue	Liner                        Function
                                I
                                          •	   Heat	resistant
                                          •	   Acid	resistant	                     Code          I            H         E
                                          •	   Suitable	for	all	domestic	fuels     FL11         160           330       200
                                    H
                                          •	   50	years	proven	use
                                                                                 Pallet	Size:	81	units

                            E

Socketed	&	Spicketed	Flue                 Function
                            C
                                          •	   Heat	resistant
                            I
                                          •	   Acid	resistant	                    Code      C          H            E    I
                                          •	   Suitable	for	all	domestic	fuels     FL2     275        400       240     200
                                        H
                                          •	   50	years	proven	use
                                                                                 Pallet	Size:	120	units


                            E
Flue	Bends

                    I
                        C                                           I             Code      C          A            E    I
                                                                                  BE02     275        37.5º     240     200
                                                                                  BE05     200        45º       250
                A                                               A
                                                                                 BE02	-	Pallet	Size:	75	or	39	units
                            E                                           E
                                                                                 BE05	-	Pallet	Size:	75	or	39	units
All	Flues	made	to	European	Standard	ISEN	1457



                                                            4
                                                                                               Chimney Pots

    Square	Panelled                         Function
 ew                                        •	 Decorative
N
                                                                                 Code           I          H          E
                    H                                                             C31          265         500        315

                                                                               Pallet	Size:	16	units
                            E
                            I
    Square	Spiked                           Function
 ew                                        •	 Decorative
N
                                                                                 Code           I          H          E
                     H                                                            C32          265         600        315

                                                                               Pallet	Size:	16	units
                            E
                            I

      Dublin                                Function
                                I
                                           •	 Decorative
                                                                                 Code           I           H          E
                                                                                   C1          240         600        280
                                    H
                                                                                   C1          240         750        280
                                                                               Pallet	Size:	24	units

                                E
      Cannon                                Function
                                I
                                           •	 Decorative
                                                                                 Code           I           H          E
                                                                                   C2          240         500        300
                                    H
                                                                               Pallet	Size:	24	units


                                E
    Crescent                                Function
                            W
                                          •	 Decorative
                                          •	 Helps	protect	the	upward	           Code          W           H          E
                                             flow	of	flue	gases	in	windy	or	      C7           620         620        360
                                        H    exposed	areas
                                                                                    Non-	Stock	Item:	Made	to	order



                            E
    Tee                                     Function
                            W
                                          •	 Decorative
                                          •	 Helps	protect	the	upward	          Code       I         E           W     H
                                             flow	of	flue	gases	in	windy	or	     C9      150         350        640   650
                        I               H    exposed	areas
                                                                                    	Non-	Stock	Item:	Made	to	order


                            E
All	pots	are	tested	to	ISEN	13502	and	for	Freeze/Thaw.	Mixed	pallets	available.
All pots are available in Buff & Black (allow ten working days for black & buff)


                                                               5
Chimney Pots

Belfast                                    Function
                           I
                                           •	 Decorative
                                                                                  Code          I        H          E

                                   H                                               C23        240       450         300
                                                                                   C5         240       300         300
                                                                                   C34        240       600         300
                                                                                Pallet	Size:	24	units
                           E
Octagon                                    Function
                           I
                                           •	 Decorative
                                                                                  Code          I        H          E
                                   H                                               C6         280       600         340
                                                                                   C11        280       750         340
                                                                                         750mm	High	Made	to	order
                                                                                Pallet	Size:	16	units
                           E
Octagon	Wind	Guard                         Function
                           I
                                           •	 Decorative
                                                                                  Code          I        H          E
                                   H                                               C3         280       600         340
                                                                                   C12        280       750         340
                                                                                         750mm	High	Made	to	order
                                                                                Pallet	Size:	16	units
                           E
Louvre                                     Function
                           I
                                           •	 Decorative
                                           •	 Helps	improve	updraught,	           Code          I        H          E
                                   H          thereby	counteracting	               C8         200       600         340
                                              downdraught
                                                                                   C13        200       750         340
                                                                                         750mm	High	Made	to	order
                                                                                Pallet	Size:	16	units
                           E
Decorative	Fuel	Effect                     Function
 ew                                        •	 Decorative
N

                                       I   •	 Helps	protect	the	upward	           Code          I        H          E
                                              flow	of	flue	gases	in	windy	or	      C30        210       580         250
                  H
                                              exposed	areas
                                                                                Pallet	Size:	16	units


                           E
Rook                                       Function
                               I
                                           •	 Decorative
                                                                                  Code          I        H          E
                                                                                   C18        250       500         290
                      H
                                                                                Pallet	Size:	24	units

                               E
All	pots	are	tested	to	ISEN	13502	and	for	Freeze/Thaw.	Mixed	pallets	available.
All pots are available in Buff & Black (allow ten working days for black & buff)


                                                           6
                                                                                            Chimney Pots

      Heritage	Pot                       Function
                             I
 ew
N                                        •	 Decorative
                                                                                Code         I         H     E
                                 H                                               C29         /        750   340

                                                                              Pallet	Size:	24	units


                             E
    Cowl	(Crow	Guard)                    Function

                                         •	 Decorative
                                         •	 Helps	protect	chimney	from	         Code         I        H     E
                                            birds	forming	a	nest                  C4        150       400   180
                                     H
                         I                                                    Pallet	Size:	20	units

                             E

    Gas	Vent                             Function
                             W
                                         •	 May	be	used	with	approved	
                                            gas	fired	appliances	with	flue	     Code         I        H     W
                                            outlets	up	to	200mm	diameter         C27        160       370   250
                                  H      •	 Suitable	for	ventilation	in	
                                            dormant	chimneys                  Pallet	Size:	25	units


                             I
      Flue	vent                          Function
 ew
N                                        •	 Suitable	for	ventilation	in	
                                            dormant	chimneys                    Code         I         H     E
                                         •	 Flue	stopper                       FLVENT       150       190   180
                     H
                                                                              Pallet	Size:	24	units
                             E
                             I



All	pots	are	tested	to	ISEN	13502	and	for	Freeze/Thaw.	Mixed	pallets	available.
All pots are available in Buff & Black (allow ten working days for black & buff)




                                                               7
Ancillary Products

Fire	Cement	Tube                   Applications

                                  •	 Geocel	fire	block	seal	is	a	ready	mixed	and	ready	to	use	fire	cement	that	
                    Code             will	withstand	temperatures	up	to	1250ºC.	Designed	for	permanently	
                    CS011            repairing	&	sealing	joints,	cracks	and	fissures	in	fire	bricks,	fireplaces,	
                                     solid	fuel	ovens,	ranges,	boilers,	internal	flue	pipes	and	other	surfaces	
                   Contents
                                     where	heat	resistance	is	required.	
                    310ml



Fire	Cement	Tub                   Applications
                                  •	 Fire	cement	is	ready	mixed,	finely	ground	putty	substance,	which	dries	
                    Code             rock	hard	when	exposed	to	heat	withstanding	temperatures	up	to	1250ºC.	
                   DYSET             Designed	for	permanently	repairing	&	sealing	joints,	cracks	and	fissures	in	
                                     fire	bricks,	fireplaces,	solid	fuel	ovens,	ranges,	boilers,	internal	flue	pipes	
                   Contents
                                     and	other	surfaces	where	heat	resistance	is	required.	
                   11.5	kg



Vermiculite                       Applications

                                  •	 Vermiculite	is	ideal	as	a	filler	to	insulate	around	flue	linings,	behind	firebacks	
                    Code             and	around	pipes	when	fitting	heaters.	Firebacks	backfilled	in	this	way	are	
                     P24             less	likely	to	crack	due	to	the	cushioning	effect	of	the	vermiculite.
                                  •	 The	insulating	effect	ensures	more	heat	is	returned	to	the	room.	This	helps	
                   Contents
                                     to	maintain	flue	gas	temperatures,	the	higher	the	temperature	within	the	
                    101	ltr          flue	the	more	efficient	the	chimney	functions	thus	improving	draught.
                                  •	 Vermiculite	needs	to	be	mixed	with	Portland	Cement	before	use.

Fire	Clay                                                  Fondue	Cement

                    Code                                                             Code
                    BGC1                                                              F01
                   Contents                                                        Contents
                    25	kg                                                            25	kg



Fire	Bricks

                                                                           Code         W             H         L
                                                                           P4105        75        100          230
                                     H
                                                                           P4106        50        100          230
                                                                    L
                                                                           P4107        25        100          230
                                         W
                                                  W
                                                           W


Brick	Vents                       Applications


                              D •	 Ventilation	purposes.                      Code       W        H       D
                                                                              VENT      230     150       65
                              H


                    W




                                                  8
                                                                        Flue Gathering Units

Concrete	Flue	Gathering	Unit
                                                       I

                                                                   T    Code        I          W           B    T
                                                                         FLG       200        880        440   400
                                    B


                                                   W

Concrete	Flue	Gathering	Unit

                                                   I
                                                                        Code        I          W           B    T
                                                                   T
                                                                       FLG10       250        1370       520   480
                                B

                                               W


Concrete	Flue	Gathering	Unit

                                                   I
                                                                        Code        I          W           B    T
                                                                   T
                                                                       FLG12       300        1370       520   480
                                B

                                               W


Refractory	Flue	Gatherer                       I

                                                               T
                                                                                   Code        I         W      B

                                    B                                              FLG8       200        555   410




                                              W

Fondue	Fire	Back                    Heat	Resistance
                      I
                                 •	 Firebacks	tested	and	fired	to	
                                    1280ºC	by	Ceram	ref:	(077263)-       Code             I          H         E
                                    38499                                FB16           410          560       500
                               H
                                 •	 Recommended	when	a	solid	
                                                                         FB18           460          560       560
                                    fuel	open	fire	is	used	in	a	
                                    smaller	fireplace	opening
                     E                                                 Pallet	Size:	32	units

Fondue	Roll	Back	Fire	Back          Heat	Resistance
                      I
                                 •	 Firebacks	tested	and	fired	to	
                                    1280ºC	by	Ceram	ref:	(077263)-       Code             I          H         E
                                    38499                               B16RBFFM        410          580       500
                               H •	 Recommended	when	a	solid	
                                                                        B18RBFFM        460          580       560
                                    fuel	open	fire	is	used	in	a	
                                    smaller	fireplace	opening
                                                                       Pallet	Size:	28	units
                     E




                                                           9
     Fire Backs                        100
                                                  100                                                    200

                                      all dimensions in mm                  Another fire compartment or another dwelling
                                                                                            at least 200mm
   Fireplace Construction
                                           (a) Solid wall
   •	 For	a	chimney	to	draw	properly	the	formation	from	the	top	of	the		fireplace	into	the	flue	(the	throat)	should	be	
                                                                                 (b) Cavity wall
                                       at least 200mm
      properly	formed.	It	is	strongly	recommended	that	a	pre-formed	flue-gathering	lintel	be	used	for	this	purpose	to	
         Outside
      ensure	a	satisfactory	throat	arrangement.                                             at least 200mm
   •	 Fireplace	dimensions	should	be	controlled	to	avoid	the	risk	of	smoking	in	the	finished	construction.	The	height	of	
                   100
      the	fireplace	opening	measured	vertically	from	the	top	of	the	grate	to	the	underside	of	the	flue-gathering	should	
      not	be	greater	than	550mm.                                                           recess               jamb
       100                                                           200
100
  Fireplace Recesses

    dimensions in mm             Another fireat least 200mm another dwelling at least 100mm
all •	 Fireplaces	need	to	be	constructed	such	that	they	adequately	protect	the	building	fabric	from	catching	fire.	Fireplace	
                                                 compartment or                   each leaf
      recesses	should	be	constructed	of	masonry	or	concrete	to	the	dimensions	shown.


   (a) Solid wall
   Solid Wall                                (b) Cavity
                                             Cavity Wallwall                                 (c) Back to back
                                                                                             Back to Back Wall
    at least 200mm                                   at least 200mm                              at least 200mm

                                                         recess                 jamb



              at least 200mm                 each leaf at least 100mm
                                                                                                 at least 100mm
                                             (c) Back to back               •	 at	least	200mm	separation	between	different	dwellings
     (b) Cavity wall                                                        •	 at	least	100mm	within	the	same	dwelling
                                                   at least 200mm
             at least 200mm

   Best Practice for Fire Back
              recess
   Installation            jamb
                                                  Plan            Fireback                             Throat forming component
   When	 fitting	 a	 fireback	 corrugated	                     (BS 1251:1987)                                      (either)
   cardboard	 should	 be	 positioned	                                                                        integrated into
   immediately	 behind	 the	 lower	 back	
     each leaf at least 100mm                                                                                prefabricated gather
                                                  Insulating                      Sand/cement
   section	 of	 the	 fireback	 to	 serve	 as	          least
                                                   atinfill    100mm              benching                   or prefabricated
   an	expansion	joint.	The	void	behind	                                                                      appliance chamber
   this	 should	 be	 filled	 with	 a	 suitable	                                                                      (or)
     (c) Back to back
   insulating/weak	mortar	support	infill.	                                                                   throat forming lintel
   Some	 form	 of	 fire	 resistant	 ceramic	                                                                 (BS 1251:1987)
             at least 200mm
   rope	 which	 will	 allow	 for	 forward	
                                                                     Rope
   expansion	 should	 be	 used	 to	 seal	                                       Insulating
   the	 fireback	 with	 the	 front	 fireplace	                                     infill                      Throat
   surround.                                                                                                   110 ± 10mm
                                                               350mm
   It	 is	 essential	 that	 the	 base	 of	 the	                                                    Elevation
                                                               nominal
   fireback	is	fitted	to	be	level	with	the	                                                                          Fireback
   top	of	the	front	hearth	as	illustrated.         Corrugated
                                                                                                                     (BS 1251:1987)
                                                                             Corrugated
           at least 100mm                          cardboard
   The	 fireback	 is	 shaped	 to	 guide	 the	                                cardboard
   flue	 gases	 into	 the	 throat	 opening	
   and	 the	 heat	 from	 the	 fire	 into	 the	                                  Rear Hearth                       Front Hearth
   room.




                                                                    10
                                                                                     Ridges




Code          Description                             Angle                 Length       Colour
RTPA    Plain	Angle	150mm	Wing      90˚        105˚   115˚    125˚   135˚   450mm    Buff,	Red,	Black
 RTC    Capped	Plain	Angle	Ridge    90˚        105˚   115˚    125˚   135˚   450mm    Buff,	Red,	Black
RTCC       Club	Crested	Ridge       90˚        105˚   115˚    125˚   135˚   300mm    Buff,	Red,	Black
OOGEE     Double	Oogee	Ridge       Universal	Angle                          400mm      Red,	Black




                                          11
  One Coat Renders




Onelite MQ or Hand                                                       ONE	LITE	SINGLE	COAT	RENDERS	-	Technical	Specification
                                                                                                                   Onelite	MQ
A	 machine	 projected	 single	 layered	 render	 composed	
of	 a	 white	 cement	 base,	 selected,	 graded	 material	                Material	Consumption		                          1.43
aggregates,	 light	 aggregates,	 special	 additives	 for	                (kg/mm/m2)
improving	 workability	 and	 adherence	 of	 the	 material,	              Minimal	Final	Thickness	(mm)                    15
hydrophobic	components,	pigments	and	fibres.                             Maximum	Single	Application	(mm)                 20

Finish                                                                   Final	Density	of	Hardened		                    1530
A	 course	 stone	 masonry	 effect	 which	 is	 obtained	 by	              Product	Kg/m3	(±	100)
scraping	 the	 surface	 with	 a	 spiked	 trowel	 or	 scratcher.	         Water	Addition	(%)		                          23
A	splatter	dash	or	rough	cast	finish	can	be	achieved	by	                 Litres/bag                                  4.5	-	5
slowing	down	the	machine	projection	on	a	second	pass.                    Resistance	to	compression	Mpa		                ≥	6.5
                                                                         (28	days)
Substrate                                                                Flexural	Strength	Mpa		                         2.5
Onelite	MQ	can	be	applied	to	various	masonry,	precast	                   (28	days)
concrete	panels	and	in-situ	concrete.                                    Working	Time	(minutes)                      30	-	40
                                                                         Packaging						Bags                         25	kg
                                                                         																							Pallets             48	bags
                                                                         Storage	(under	dry	conditions)            12	months
                                                                         Compressive	strength                      2.0	N/mm2



                                  Benefits:
                                  •	 Easy	to	mix	-	easy	to	apply
                                  •	 Excellent	adhesion
                                  •		High	compressive	strength
                                  •		Water	resistant
                                  •		Low	capillarity
                                  •	 Permeable	to	water	vapour		
                                  	 allowing	the	building	to	breathe
                                  •		Durable
                                  •		Resistant	to	cracking	or	fading
                                  •	 High	elasticity	allows	movement		
                                  	 of	the	building
                                  •	No	painting	required




            730                      724                           722                                710         736




            701                      702                           703                                734          708




                                                                   12
                                                                                            Chimney Systems

Benefits
•	 Designed for Speed of Erection
   Modular	units	allow	for	quick	and	easy	
   assembly	on	site.	An	8	metre	chimney	can	be	
   constructed	from	ground	floor	to	chimney	pot	
   in	6	hours.	




                                                            B.	Finishing	Pack	(Extension)
•	 General Applications
   Suitable	for	Timber	Frame,	Steel	Frame,	ICF	
   (Insulated	Concrete	Formwork)	&	Masonry	
   construction.	Solutions	have	been	specifically	
   designed	to	meet	the	requirement	of	timber	
   framed	construction.

•	 Multi Fuel Compatible
   Suitable	for	all	fuels	-	gas,	oil,	wood	and	solid	
   fuels.

•	 Everything you need
   All	the	components	required	to	construct	the	
   chimney	from	the	ground	floor	to	the	chimney	
   pot	are	supplied	on	one	or	two	pallets.	

•	 Superior Insulation
   The	consistency	of	the	insulation	maintains	
   the	temperature	of	the	flue	gases	allowing	
   them	to	pass	freely	up	the	chimney.	Back	
   filling	of	insulation	is	not	required.

 A. Base Pack              B. Finishing Pack
    (4 Metre)                 (Extension)

 This	 pack	 includes	     This	 pack	 includes	
 all	 the	 components	     the	extended	chimney	
 required	 from	 base	     stack	      and	      the	
 up	 to	 and	 including	   components	 required	
 4m	 of	 the	 chimney	 	   when	 exiting	 the	
                                                         A.	Base	Pack	(4	Metre)




 breast	and	stack.	        roofline.	 The	 size	 of	
                           the	 finishing	 pack	 will	
                           vary	depending	on	the	
                           overall	 height	 of	 the	
                           chimney.




                                       1st	Layer

                                       2nd	Layer

                                       3rd	Layer




                                                         13
  Technical Notes                                                                          Technical Notes

Installation Guidelines for Clay Flue Liners

a.	Ensure	that	the	flue	liner	to	be	installed	suits	the	            •	 When	the	smoke	is	seen	to	steadily	exit	from	the	
   intended	appliance	or	open	fire	dimensions.	                        top	of	the	flue	or	terminal,	seal	off	the	top	using	an	
                                                                       inflatable	bladder	or	a	plastic	bag	placed	over	the	
b.	All	flue	linings	and	components	should	be	examined	                 terminal	and	sealed	around	the	edges.	
    before	installation	and	any	damaged	items	should	not	
    be	used.	                                                •	 Check	the	full	length	of	the	flue/chimney	construction	
                                                                for	any	significant	leakage.	This	includes	checking	for	
c.	Flue	linings	are	to	be	installed	with	the	rebate /           smoke	leakage	around	window	openings	and	cavities	
    socket uppermost	and	jointed	with	the	appropriate	          when	the	chimney	is	built	in	as	part	of	a	cavity	wall.	
    Lagan	Chimney	Systems	fireproof	mortar/sealant.	
                                                             •	 The	test	should	be	allowed	to	continue	for	at	least	
d.	Joints	should	be	fully	sealed	and	pointed;	any	surplus	      5	minutes	and	is	considered	satisfactory	if	there	is	
    sealant	protruding	into	the	flue	should	be	removed	         no	significant	leakage	of	smoke	through	the	walls	of	
    during	construction	(wipe	using	damp	sponge).	              the	flue.	If	significant	leakage	does	occur	the	cause	
                                                                should	be	investigated	and	rectified,	followed	by	
e.	When	using	clay	flue	liners	the	gap	between	the	             repeating	the	test.	A	strong	plume	of	smoke	escaping	
    flue	linings	and	the	surrounding	masonry	should	            through	a	joint	or	defect	would	be	considered	as	a	
    be	at	least	15mm.	These	gaps	should	be	filled	with	         major	leakage.		
    insulating	material	such	as	a	weak	lime	mortar	mix	or	
    lightweight	insulating	concrete	(vermiculite).	Backfill	 •	 Always	follow	the	manufacturer’s	safety	instructions	
    each	flue	as	each	liner	is	constructed.                     when	using	smoke	pellets	and	take	the	necessary	
                                                                protection	to	avoid	inhalation	of	the	smoke.	Once	the	
f.	 Only	factory	made	components	should	be	used	to	             flue	has	satisfied	the	test,	ensure	the	closures	at	the	
    form	bends	or	offsets.	All	offsets	must	be	adequately	      top	and	bottom	of	the	flue	are	removed.	
    supported.	
                                                                    Installation Guide for Terminals (Pots)
g.	Flue	construction	should	be	protected	against	
   exposure	to	rain	and	at	the	end	of	each	day	until	the	           The	chimney	terminalis	is	an	important	component	of	a	
   mortar	/	sealant	has	fully	hardened.	                            chimney	system.	It	takes	the	flue	gas	outlet	away	from	
                                                                    the	turbulence	created	by	the	bulk	of	the	chimney	stack	
h.	Perform	checks	to	ensure	that	the	internal	flueway	is	           and	 can	 reduce	 the	 likelihood	 of	 water	 ingress.	 Also,	 it	
   clear	of	any	protrusions	or	obstructions	and	remove	             can	 put	 the	 flue	 outlet	 above	 the	 high	 pressure	 zone,	
   any	excess	fireproof	mortar	/	sealant,	cement	mortar	            which	causes	down	draught	problems.	
   and	debris.	
                                                                    The	terminal	should	be	embedded	into	the	top	of	the	stack	
i.	 Smoke	testing	during	construction.	                             by	125mm	or	one	quarter	of	the	height	of	the	terminal,	
    The	purpose	of	smoke	testing	is	to	check	that	the	              whichever	is	the	greater.	A	straight-sided	terminal	should	
    flue	gases	will	rise	freely	up	the	flue	and	to	identify	        be	butted	against	the	top	of	the	last	liner.
    any	possible	faults,	such	as	incorrectly	sealed	joints,	
    damaged	components	and/or	obstructions	in	the	flue.       A	 tapered	 terminal	 should	 be	 fitted	 over	 the	 last	 liner.	
                                                              Note	that	the	top	of	the	last	liner	lies	within	the	corralled	
If	 the	 flue	 components	 have	 been	 inspected	 and	 the	 brickwork	in	this	case.
installation	 checked	 as	 work	 proceeds	 it	 may	 not	 be	
necessary	to	carry	out	the	smoke	test.	However	if	there	 A flue terminal should always be used to obtain a
are	any	doubts	as	to	the	integrity	of	the	flue	carry	out	the	 satisfactory chimney performance. The chimney
following	smoke	test.                                         should not be terminated with just a mortar flaunching
                                                              or exposed flue liner.
Smoke Test Procedure
Close	all	doors	and	windows	in	the	room	served	by	the	 General Maintenance
flue.	Warm	the	flue	for	up	to	10	minutes	using	a	blowlamp	
or	similar	to	establish	a	flue	draw.	A	longer	warming	up	 Chimneys	 should	 be	 swept	 at	 least	 twice	 a	 year,	 once	
period	may	be	required	when	testing	larger	flue	sizes	and	 before	the	heating	season,	once	after.
in	the	case	of	wet	or	cold	flues.

•	 Place	two	or	more	smoke	pellets	on	a	masonry	block	
   stood	on	end	within	the	fire	opening	or	recess	and	
   ignite.	




                                                               14
                                                                                                      Technical Notes


                                                                     Point where flue passes through
Recommended Flue Outlet Positions for Solid Fuel Appliances(Notes 1,2)
                                                 weather surface
                                                                                                                      Clearances to flue outlets


                                                                               at or within 600mm                     at least 600mm
                                                                      A
                                                                  Point	where	flue	passes	
                                                                            of the ridge                              above the ridge.
                                D
          A                                                       through	weather	surface	
                                                                            elsewhere on a roof                       at least 2300mm horizontally
                                                                      B
                                                                  (Notes	1,2)
                                                                               (whether pitched or flat)              from the nearest point on the
                 B                                                  A       at	or	within	600mm	              at	least	600mm	above	the	
                                                                                                                     weather surface and:
                        C                                                   of	the	ridge.                    ridge.
                                                                                                                      a - at least 1000mm above the
                                                                    B       elsewhere	on	a	roof	       at	least	2300mm	horizontally	
                                                                                                               highest point of intersection
                                                                            (whether	pitched	or	               of the chimney and the
                                                                                                       from	the	nearest	point	on	
                                                                            flat).                             weather surface; or
                                                                                                       the	weather	surface	and:	
                                                                                                               b - at least as
                                                                                                       a-	at	least	1000mm	high the ridge.
                                                                                                       above	the	highest	point	of	 the
                                                                      C        below (on a pitched roof)
                                                                               or within 2300mm
                                                                                                                 at least 1000mm above
                                                                                                       intersection	on	the	chimney	
                                                                                                                top of the opening.
                                                                                                       and	the	weather	surface;	or
                                                                               horizontally to an openable
                                                                               rooflight, dormer windowb-	at	least	as	high	as	the	
                                                                               or other opening. (Note 3)
                                                                                                       ridge.
                                                                    CD        within 2300mm of an              at least 600mm above
                                                                            below	(on	a	pitched	 at	least	1000mm	above	the	 the
                                                                                                                adjacent building.
                                                                              adjoining or adjacent top	of	the	opening.
                                                                            roof)	or	within	
                               CL                                             building, whether or not
                                                                            2300mm	horizontally	
                                                                              beyond the boundary.
For clearances to easily ignitable roof coverings
                     2.3m             2.3m                                  to	an	openable	
                                                                              (Note 3)
such as thatch refer to diagram 2.2 of Approved                             rooflight,	dormer	
Document ‘J’ 2002 Edn.                                               Notes: window	or	other	
                                                                     1 Theopening.	(note	3) building external surface, such as its roof,
                                                                             weather surface is the
                                                                         tiles or external walls
                                     0.6m                           D       within	2300mm	of	an	 at	least	600mm	above	the	
                             1.2m                                    2   A flat roof has a pitch less than 10°
         1.0m                                                               adjoining	or	adjacent	 adjacent	building.
                                                                     3   The clearances given for A or B, as appropriate, will also apply.
                                                                            building,	whether	
                                                                            or	not	beyond	the	
                                                                            boundary.	(note	3)
                                                                  Notes:	
                                                                  1		The	weather	surface	is	the	building	external	surface,	such	  	
                                                                  				as	its	roof,	tiles	or	external	walls
                                                                  2		A	flat	roof	has	a	pitch	less	than	10°
                                                                  3		The	clearances	given	for	A	or	B,	as	appropriate,	will	also		
• If in doubt, clear the ridge with chimney stack.                				apply.


Minimum Flue Height

Flues	should	be	high	enough	to	ensure	sufficient	draught	
to	clear	the	products	of	combustion.	It	is	likely	that	a	flue	
height	of	less	than	4.5	metres	would	not	be	sufficient.
                                                                  Maximum chimney height
The	 height	 of	 a	 flue	 serving	 an	 open	 fire	 is	 measured	 Height (H) to datum not to exceed 4.5 x width (W)
vertically	 from	 the	 highest	 point	 at	 which	 air	 can	 enter	
the	 fireplace	 to	 the	 exit	 point	 at	 the	 terminal.	 If	 the	 fire	
is	under	a	canopy	then	the	lower	point	is	taken	from	the	
bottom	of	the	canopy.                                                                          Datum
                                                                         150mm                                                           150mm
Maximum Chimney Height
                                                                                                        H
For	stability,	H	should	not	exceed	4.5	W.	H	is	measured	
from	the	level	of	the	highest	point	of	the	intersection	of	
the	roof	and	the	outer	wall	of	the	chimney	and	a	datum               Level of highest
level	0.15	m	max.	up	the	terminal.	The	top	of	the	terminal	          point of intersection
may	be	higher	than	this	datum	level.	
                                                                                                                               W
Windzones	 must	 be	 considered	 when	 constructing	
chimney	stacks.




                                                             15
  Technical Notes


Avoiding Chimney Related Problems

         Defect                   Causes                                         Prevention

1.	Blockages             Mis-aligned	flue	lintels	   Care	in	workmanship	and	supervision.	Proper	packing	of	flue	
                         and	liners.	Mortar	         liners	as	work	proceeds.	Clean	and	test	flue	thoroughly	on	
                         joints	protruding	into	     completion	of	construction.
                         flue.	Debris	in	flue.

2.	Air	starvation        House	too	well	sealed.      Ensure	adequate	air	supply.	If	there	is	insufficient	air	supply,	
                                                     air	speed	through	the	flue	will	be	inadequate	for	proper	
                         Note:	many	builders	        draught.	If	opening	a	door	or	window	on	a	calm	day	stops	the	
                         fit	underfloor	air	feed	    fireplace	smoking	this	usually	indicates	air	starvation.	Form	
                         pipes	to	sunken	ash	        throat	properly	-	the	throat	should	be	approx.	300mm	wide	by	
                         box	type	fires	to	avoid	    100mm.	These	are	the	smallest	dimensions	that	will	allow	a	
                         air	starvation.             chimney	brush	to	pass	through.

3.	Badly	formed	throat   Poor	workmanship	/	         Care	in	workmanship	/	supervision.	Use	a	precast	flue-
                         supervision.                gathering	lintel	to	ensure	smooth	flow	to	the	flue.

4.	Steady	downdraught Top	of	chimney	too	            Carry	chimney	above	ridge	level	in	all	cases.	Ensure	that	stack	
                      low,	e.g.	not	above	           extends	at	least	4.5m	above	the	top	of	the	fireplace.
                      ridge.	Chimney	
                      too	short	(e.g.	in	a	
                      bungalow)

5.	Intermittent			       Chimney	near	higher	        Where	practical,	build	chimney	to	a	level	where	downdraught	
				downdraught          building	or	trees.	         is	overcome.	Where	this	is	not	practical,	incorporate	a	draught	
                         Chimney	located	on	a	       inducing	cowl	into	chimney	construction.
                         sheltered	hillside	or	in	
                         a	valley.

6.	Fireplace	opening		   Opening	such	that	top	 Care	in	setting-out	opening.	Care	in	workmanship	and	
				too	high             is	more	than	550mm	    supervision.	Use	standard	sizes	fire	openings.
                         above	level	of	grate.

7.	Badly	built	offset    Offset	too	long,	too	    Care	in	workmanship	and	supervision.	Angle	of	offset	should	
                         shallow	or	too	close	to	 be	no	shallower	than	52.5º	to	the	horizontal.	The straighter
                         throat.                  the chimney, the better the draw.

8.	Wrong	size	flue       Too	big	-	chimney	does	     Use	flue	liners	of	200mm	nominal	internal	diameter	for	open	
                         not	warm	up.                fires.	The	internal	cross-sectional	area	of	the	flue	lining	should	
                         Too	small	-	not	            be	15%	of	the	cross-sectional	area	of	the	finished	fireplace	
                         permitted	due	to	fire	      opening.
                         risk.

9.	Unsuitable	chimney		 Pot	smaller	than	the	        Use	a	chimney	pot	which	has	a	minimum	diameter	at	least	
				pot                 flue	or	tapering	to	a	       equal	to	that	of	the	flue	liner.
                        diameter	less	than	of	
                        the	flue	liner.

The	table	above	highlights	the	most	common	faults	in	fireplace	and	chimney	construction	and	the	steps	that	should	
be	taken	to	avoid	them.	

Repairs to chimneys are costly.




                                                          16
17
   C6 Octagon           C32 Square Spiked    C1 Dublin       C3 Octagon Windguard          C8 Louvre
     600mm                   600mm            600mm                 600mm                   600mm




C31 Square Panelled       C2 Cannon         C18 Rook              C5 Belfast        C30 Decorative Fuel Effect
     500mm                 500mm             500mm                 450mm                    600mm




                          FLVENT
                          Flue Vent




C29 Heritage Pot
    750mm                                   C7 Crescent             C4 Cowl
                           C27                                                             C34 Belfast
                                              620mm
                         Gas Vent                                                           600mm



Total Chimney Solutions

Lagan	Chimney	Systems                       Kingscourt	Country	Manor	Brick
The	Swan,	Athy,	Co.	Kildare.                12	Herdman	Channel	Road
t:		 05986	35513                            Belfast		BT3	9BL
f:	 05986	35582                             t:		 +44	28	9077	7321	
e:		 info@laganchimneysystems.com           f:		 +44	28	9077	7245	
w:		www.laganchimneysystems.com             e	:	 info@cmbni.co.uk
Company	Registration	Number	:	10541




                                               18

								
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