ES 100 MEMBRANE SYSTEM
RE - ROOFING OVER
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The following is a specification for the re–roofing application of ES 100 Membrane System (“MS”)
on an existing roof consisting of sheet membrane over mechanically fastened or adhered
polyisocyanurate or extruded polystyrene insulation board. This specification assumes that any
sheet membrane will be removed. Each project will have special conditions and these should be
identified and addressed additional to this specification. If in doubt, seek EcoSeal, LLC’s (“ES”)
advice before proceeding.
2.0 QUALITY ASSURANCE
2.1 MS may only be applied by a qualified, licensed and approved applicator.
2.2 A pre-installation conference, to include at least contractor, applicator, architect/engineer and
ES representative, should be held prior to application, to ensure proper substrate and other
A thorough inspection of the roof surface should be carried out to confirm or determine the
3.1 The presence of wet insulation or dry rot resulting from existing leaks, using a moisture meter
or, preferably, an infra – red survey, taking core samples, where indicated. Any such areas
should be clearly marked.
3.2 The presence of large irregularities (e.g. broken board, etc.) or large gaps or open areas.
Such areas should be clearly marked.
3.3 The sufficiency and adequacy of the mechanical fastening or adhesion of the insulation board
to the substrate.
3.4 The soundness of the deck and underlying deck supports, and the soundness and proper
detailing of all roof mounted supports, penetrations, flashing, outlets, turn-ups, sumps and all
other items which are to be part of the new, completed roofing system.
3.5 Positive and functioning drainage to the roof surfaces.
MS should be installed on a clean, dry and structurally sound surface, free of sharp edges, loose
or foreign material, dirt, oil or grease or other materials or debris which may damage the MS.
4.1 Remove sheet membrane. Remove all grates, drain covers and other fittings and loose items
on the roof surface. Remove all A/C units and other roof top equipment, which does not
provide at least two feet of clearance above the roof surface to permit spray application below
the equipment, or sufficient clearance to permit application of ES Trowel Grade (“ESTG”) over
the area below the equipment.
4.2 Replace all insulation board found to be suspect. New insulation board should be of sufficient
thickness so as to be level with existing roof.
4.3 If desired, install Dens – Deck cover board (one – quarter (1/4) or one – half (1/2) inch,
depending on expected roof traffic) with long joints in continuous straight lines and end joints
staggered between rows. Ensure that all board is properly fastened or adhered to the
substrate so as to achieve required Windstorm Classification. Fill all large irregularities or
depressions with ESTG, leaving a smooth surface and transition. Seal all joints in cover board
with three (3) inch butyl tape.
4.4 Repair and/or replace and/or install details, penetrations and flashing, as necessary. Install
aluminum one way roof vents, as and if needed to permit escape of residual moisture. Set
vents on cover board over hole cored to deck. Clean all new metal surfaces, including
details, flashing and penetrations, with a rust and oil cleanser (such as vinegar or diluted 4:1
muriatic acid/water solution) to remove any residual factory oils, rust or scale.
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4.5 Clean all other bare metal surfaces to which ESTG or MS will be applied and etch with vinegar
or diluted 4:1 muriatic acid/water solution or similar cleanser. Water wash to complete the
cleaning process. Power wash in the case of heavy rust or scale. Heavy rust or scale may
require more than one application. All metal surfaces should be coated with either ESTG or
MS within 18 hours of treatment to ensure proper bonding.
4.6 Apply ESTG, as necessary, after allowing time for surfaces to dry. In the case of gaps ¼” or
larger, such as around penetrations or seams, or at wall turn – ups, apply mesh tape
sandwiched between two layers of ESTG, as necessary to create a smooth surface and
transition. Overlap details onto the existing roofing system three (3) times the diameter of
pipe penetrations or a minimum of 10 inches to all sides.
4.7 Allow 12 hours cure time prior to application of the MS over ESTG.
4.8 Clean all other areas of the roof, as necessary, to provide a dirt-free surface for application of
4.9 Mask areas as needed to ensure protection from overspray. Mask terminations to a straight
5.0 APPLICATION OF ES 100 MEMBRANE SYSTEM
5.1 Apply MS at a minimum one hundred (100) mils thickness. Begin spraying from the lowest
point of the roof to the highest point. Avoid spraying an excess of material at vertical to
horizontal intersections, such as wall/roof turn – ups, or over construction or expansion joints,
or around or over fillets and details, taking care to maintain a uniform thickness of sprayed
material in all areas. On all vertical surfaces, MS should be sprayed a minimum of ten (10)
inches up the vertical surface above horizontal. In all cases, continue the MS beyond any
underlying ESTG for at least four (4) inches.
5.2 Detail MS around all penetrations.
5.3 Check MS for correct thickness in a grid pattern every 400 sq. ft.
6.0 APPLICATION OF WALK PADS AND ELASTOMERIC COATING
6.1 Install factory formed, nonporous, heavy duty, solid rubber, slip resistant, surface textured
walk pads in high traffic areas and around roof mounted equipment, adhering walk pads to
MS with compatible adhesive.
6.2 If the MS is to be coated, allow the MS to cure for a minimum of five (5) days prior to coating.
6.2 Water wash to remove residual catalyst, dirt and other debris which may have accumulated
during the curing process and allow to thoroughly dry.
6.3 Apply ES 500 or 550 white elastomeric coating having elongation of at least five hundred
percent (500%), using airless sprayer or roller at a rate of no less than one hundred (100) sq.
ECOSEAL PRODUCTS USED
1 Rhino 100 - Part A
2 Rhino 100 - Part B
3 Rhino Trowel Grade Catalyst Part C
EcoSeal, LLC.reserves the right to continue to improve the product technology. Information contained in this specification could be superseded by
changes in performance characteristics. These changes, should they occur, will not be to the detriment of the product.
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