ISSN 0158-2577 TECHNICAL ASSESSMENT 351 January 2007 PRIMAbase™ External Cladding Base Sheet for Texture Coating PURPOSE APPLICANT External cladding base sheet for a texture coating on Hume Cemboard Industries Sdn Bhd, Lot 127220, residential and commercial buildings up to two storeys Kawasan Perusahaan Kanthan, P O Box 10, 31200 high. Chemor, Perak Darul Ridzuan, Malaysia (Manufacturer). 2 Withdrawal: This Technical Assessment will be withdrawn or TECHNICAL OPINION amended if CSIRO Appraisals considers that a change in design or manufacturing quality renders the basis of appraisal invalid, or if reported field experience In the opinion of CSIRO Appraisals, the PRIMAbase™ convinces CSIRO Appraisals of unsatisfactory quality or External Cladding Base Sheet for Texture Coating is performance. suitable for residential and commercial buildings under the following conditions: Term of Validity: This Technical Assessment will lapse on 31 December 1. They are installed in compliance with the instructions 2009. Technical Assessments may be amended during contained in Hume Cemboard Industries Sdn Bhd, the term of validity. Users of this Technical Assessment ‘PRIMA External Cladding Technical Manual’ should verify that it remains valid and is the current (HCI/EXT-TM/AU/0307_V2). version by checking on the CSIRO Appraisals website: http://www.cmmt.csiro.au/services/appraisals/. Note: These are available from Hume Cemboard Industries Sdn Bhd, No. 12, Jalan Tandang, 46050 Petaling Jaya, Selangor, Malaysia RELEVANT DOCUMENTS _____________________________________________ 2. Stud or joist spacing is not greater than 600 mm. Hume Cemboard Industries Sdn Bhd, ’PRIMA External 3. The building is up to a maximum of two storeys high. Cladding Technical Manual’ (HCI/EXT-TM/AU/0307_V2). 4. A texture coating is applied to the entire sheet. The texture coating does not form part of this APPROVED ASSESSMENT EXTRACT assessment. _____________________________________________ The PRIMAbase™ External Cladding Base Sheet for BUILDING CODE of AUSTRALIA Texture Coating as manufactured by Hume Cemboard ____________________________________________ Industries Sdn Bhd, Malaysia are suitable for residential and commercial buildings when the conditions listed in In the opinion of CSIRO Appraisals, PRIMAbase™ CSIRO Appraisals Technical Assessment 351 are External Cladding Base Sheet for Texture Coating as fulfilled. described in this Technical Assessment and installed under the conditions listed in this Technical Assessment will meet the Performance Requirements of Clauses BP1.1, BP1.2, CP4, FP1.4, (Volume One - Class 2 to Class 9 Buildings), and P2.1, P2.2.2 and P2.3.1 (Volume APPRAISAL Two - Class 1 and Class 10 Buildings, Housing Provisions) of the Building Code of Australia 2006. Notes: DESCRIPTION _________________________________________ (i) The inclusion of this clause with reference to the BCA is aimed at assisting those involved in the design, specifying and building approval/permit The following description is based on information process relate the Appraisal to the relevant supplied by the applicant. Performance Requirements of the BCA. PRIMAbase™ is specifically made to comply with (ii) Any changes made to the BCA will be reviewed Standards Australia, AS 2908.2 –2000 ‘Cellulose cement during the term of validity of this Technical products – Flat Sheets’. PRIMAbase™ External Assessment and, where necessary, any Cladding Base Sheet for Texture Coating is a 7.5 mm amendment required will be published on the thick cellulose fibre reinforced cement based board. It CSIRO Appraisals web pages on has rebated edges on two long sides and one short edge http://www.cmmt.csiro.au. for flush jointing purposes. The sheet sizes available are as shown in Table 1. Storage and handling: PRIMAbase™ is to be stored neatly on a flat surface on RELATED INFORMATION bearers at not greater than 600 mm spacing. The boards must be protected from damage to edges and corners and stored under cover to keep them dry prior to fixing and jointing. Sheets are to be lifted and carried on edge VALIDITY OF THE OPINION in the vertical position. If they become wet, boards must ____________________________________________ be allowed to dry to equilibrium moisture content before fixing. Failure to do so may cause excessive stress on Condition: fixings and jointings upon drying of the board. This Technical Opinion applies only to the use of PRIMAbase™ External Cladding Base Sheet for Texture Coating as described herein. 3 Table 1. – Sheet sizes BASIS OF APPRAISAL _____________________________________________ Width Length (mm) (mm) CSIRO Appraisals has assessed the following aspects in undertaking this appraisal: 2440 2725 3000 (a) physical properties of the panels, 900 ✔ ✔ ✔ (b) compliance with Standards Australia, AS 2908.2- 2000 ‘Cellulose cement products – Flat sheets’ 1200 ✔ ✔ ✔ (c) quality control procedures used in manufacture, (d) installation and handling procedures, and (e) physical properties of the material. Fixing: PRIMAbase™ sheets can be fixed horizontally or The following documents and inspections were used in vertically on timber or steel framing. Stud or joist spacing carrying out the appraisal: should be not greater than 600 mm and nogging spacing should be not greater than 1200 mm. The framing must Manufacturer's Information: be in accordance with AS 1684 Parts 2, 3 and 4 - 2006 for timber and AS 3623 - 1993 for steel. The sheets can 1. Hume Cemboard Industries Sdn Bhd, ‘PRIMA be either screwed or nailed. The edge fixings must not External Cladding Technical Manual’ (HCI/EXT- be closer than 12 mm from an edge and at corners need TM/AU/0307_V2): to be at least 50 mm from the end of the sheet. These This document provides product information and fixings are spaced at a maximum distance of 200 mm installation instructions for the use of the product. centres. 2. Hume Cemboard Industries Sdn Bhd, Nails and screws should be as used for fibre cement PRIMAbaseTM brochure (HCI/Pbase/1106/V2): sheet and comply with the relevant Australian Standard, This document provides simplified product AS 3566-1988 ‘Screws - self drilling - for the building and information. construction industries’ and/or Australian Standard, AS 2334-1980 ‘Steel nails - Metric series’. 3. Hume Cemboard Industries Sdn Bhd (PRIMABOARD DIVISION) Quality Assurance Certificate: DESIGN INFORMATION (a) SIRIM, ‘Quality System Registration Certificate’ ____________________________________________ Registration No AR430 based on MS ISO 9001- 2000 for manufacture of plain and patterned fibre General: cement flat sheets. PRIMAbase™ External Cladding Base Sheet for Texture This outlines the quality control procedures which Coating is a cement based cellulose fibre reinforced are in place to monitor the manufacturing of the board and is specifically made to comply with AS 2908.2- PRIMAbase™. 2000. The flat sheets are either nailed or screwed to a supporting frame. Reports: Weight: 1. Opus International Consultants Central PRIMAbase™ External Cladding Base Sheet for Texture Laboratories, P O Box 30-845, Lower Hutt, New Coating, at equilibrium moisture content, have a weight Zealand. Appraisal No. 1997/13 – PRIMAbaseTM of 10.8 kg/m2. fibre cement wallboard (March 1998): The appraisal stated that PRIMAbase™ complies Durability: with AS/NZS 2908.1-1992 and is used as an external CSIRO Appraisals has not assessed the durability of wall cladding substrate. It also states that PRIMAbase™. PRIMAbase™ meets the performance requirements of NZBC Clause B2.3(a) for 50 years as long as the The applicant has provided a Durability Opinion integrity of the coating system is maintained. prepared by BRANZ that concludes that PRIMAbase™ fibre cement sheets exhibit a performance comparable to 2. CSIRO Division of Building, Construction and most generic products of this nature, and therefore may Engineering. ‘Test Report No FNE7037 (3rd March be considered for a 50 year durability period, providing 1998): the product is used in accordance with the This report is on testing of 7.5 mm sheets produced manufacturer’s specifications and the conditions of the to AS 2908.2-1992 (classification A). The sheets BRANZ report. were tested to AS 1530.3-1989 ‘Simultaneous determination of ignitability, flame propagation, heat release and smoke release. The results were satisfactory to the BCA requirements. 4 3. Opus International Consultants Central 6. BRANZ Laboratories, Moonshine Road Laboratories, P O Box 30-845, Lower Hutt, New Judgeford, New Zealand. Report DC0297c – TM Zealand. Report 98-525453 – Hume Cemboard: Durability Opinion for PRIMAbase and st AS 3991 Product Testing (April 1998): PRIMAflex™ Fibre Cement Sheets after 1 Year th This report is on testing of PRIMAbase™ to AS Exposure Testing: (18 July 2001): 3991-1992: Method of testing flat cellulose-cement This report shows that PRIMAbase™ meet the sheets. The results were satisfactory to the AS performance criteria of the NZBC B2 for: 2908.2-1992 requirements. (i). 50 years when used as a bracing element and as an external cladding, and 4. BRANZ Laboratories, Moonshine Road (ii). 15 years when used as a non-structural part Judgeford, New Zealand. Report ST0530/1 – of the building envelope. TM Bracing Tests on Hume Cemboard, PRIMAbase th sheets: (6 December 2002): This report is on the testing of the racking resistance Inspections: of bracing walls clad with PRIMAbase™. The testing Inspections of installations have been undertaken by used the James Cook University EBS Technical representatives of CSIRO Appraisals and found to be Record 440 “Guidelines for the Testing and satisfactory. Evaluation of Products for Cyclone Prone areas”. 5. BRANZ Laboratories, Moonshine Road Judgeford, New Zealand. Report ST0478/a – Impact Tests on Hume Cemboard and James Hardie fibre-cement sheets: (9th April 2001): This report shows that PRIMAbase™ has a similar impact performance to Harditex. Simon Hanson CSIRO Appraisals CSIRO Appraisals is a project of CSIRO Manufacturing new products or systems. They are objective and Infrastructure Technology providing a range of assessments of the product, system or material but are assessment products including: not approvals or endorsements. They may be submitted • Technical Assessments – appraisals of innovative to approval authorities as part of the justification process products, systems or materials that may or may not required to obtain approval. be covered by Australian Standards or building regulations. Each Technical Assessment has been prepared by • Interim Reports – appraisals of products that have CSIRO Appraisals and then reviewed by the Technical not yet reached the fully developed or manufacturing Advisory Committee (TAC), detailed below. CSIRO phase. They aid with product development and may makes the appraisals on a national basis by obtaining be used as a step towards a subsequent Technical input from regional committees in each State and Assessment. Territory to take account of variations in local building • Certification Assessments – appraisals of products, regulations, practice and local climatic features. systems or materials solely against the requirements of the BCA and used for gaining approval from CSIRO Appraisals bases its assessment on the product Federal or State authorities. and information it receives and cannot accept responsibility for deviations in the manufactured quality From 1978, under the auspices of the Australian and performance of the material, product or system. Building Systems Appraisal Council (ABSAC), CSIRO However, Technical Assessments will be withdrawn ran an appraisal service in conjunction with the where adequate quality or performance has not been Australian Institute of Building Surveyors, the Housing maintained. Industry Association, the Insurance Council of Australia and the Master Builders Association. In 1999, CSIRO Technical Assessments are given a term of validity of Appraisals was formed to continue the business of three years from the date of issue. They are reviewed at ABSAC under the sole patronage of CSIRO. This new the end of the term of validity which may be extended for scheme retains the committee structure of technical and a subsequent three-year term. Technical Assessments interstate advisers that operated as ABSAC. All past may be amended during the term of validity. Users of Technical Assessments should verify that Technical ABSAC publications and appraisals are being continued Assessments remain valid and are the current version by and supported by CSIRO Appraisals. checking on the CSIRO Appraisals website: http://www.cmmt.csiro.au/services/appraisals/. CSIRO Appraisals is a founding member of the World Federation of Technical Assessment Organizations. A Technical Assessment must not be copied, in whole or in part, without authorisation by CSIRO Appraisals. Technical Assessments are intended to help all those Where permission is granted, copies must be of the concerned with the approval, specification and use of entire document. TECHNICAL ADVISORY COMMITTEE G. Geary (Chairman) Australian Institute of Building Surveyors M. Fagan Australian Institute of Building R. Goodall Master Builders' Australia Inc. M Maffucci Standards Australia R. Oke National Association of Testing Authorities, Australia C. F. Woods Housing Industry Association B. Schafer Industry Advisor A. Griffin C H Group S. Hanson (Project Leader) Manufacturing & Infrastructure Technology, CSIRO J. Sinclair Manufacturing & Infrastructure Technology, CSIRO REGIONAL REVIEW COMMITTEES New South Wales Northern Territory South Queensland Western Australia South Australia J. Lewer F. Finocchiaro S. Kajewski C. Anderson M. Andruchowycz B. O'Mara R. Luxton K. J. Rauber R. A. Wallis N. Kirkham D. Malone A. McKeough P. Nowland H. Vormelker Victoria North Queensland Tasmania ACT M. Hopkins M. Collard A. Humphreys S. Paterson P. Moore R. Horton P. Phillips G. Reardon G. Driscoll 1. SOURCE ORGANISATION A. INDEXING NUMBER ISSN 0158-2577 _______________________________ B. FILE NUMBER(S) 526 _______________________________ C. RELEASING AUTHORITY _______________________________________________________________________ CSIRO 2. ORGANISATIONAL UNIT _______________________________ Technical Secretariat D. FOR ENQUIRIES CONTACT _______________________________________________________________________ CSIRO Appraisals (03) 9252 6000 3. TYPE OF DOCUMENT/SERIES 4. DOCUMENT NUMBER Hume Cemboard Industries Sdn CSIRO Technical Assessment 351 Bhd 05 210 3688 5. TITLE/SUBTITLE E. DOCUMENT STATUS TM DRAFT DOCUMENT PRIMAbase External Cladding Base Sheet for Texture Coating INTERIM DOCUMENT _______________________________________________________________________ FINAL DOCUMENT 6. AUTHOR(S) (Give Affiliation of External Authors or Co-authors) _______________________________ F. DOCUMENT STATUS S Hanson NO RESTRICTIONS J Sinclair IN CONFIDENCE CLASSIFIED 7. PUBLISHER AND PLACE OF 8. PUBLICATION REFERENCES G. FOR DOCUMENTS PREPARED PUBLICATION UNDER CONTRACT CSIRO/Melbourne - CONTRACT NO.: _______________________________________________________________________ 9. DATE OF ISSUE 10. NO. OF PAGES 11. PRICE CONSULTANT'S NAME AND (Month, Year) AND FORMAT ADDRESS: January 2007 6/A4 12. SUPPLEMENTARY NOTES H. RELATED DOCUMENTS _______________________________________________________________________ _______________________________ 13. KEYWORDS (Up to 15 entries, Alphabetical Order Preferred, Divide by Semicolons) J. OTHER/OPTIONAL INFORMATION CSIRO Appraisals; cellulose-cement; external cladding; walls, sheets; textured coating 14. ABSTRACT (CSIRO Appraisals Approved Assessment Extract) The PRIMAbase™ External Cladding Base Sheet for Texture Coating as manufactured by Hume Cemboard Industries Sdn Bhd, Malaysia are suitable for residential and commercial buildings when the conditions listed in CSIRO Appraisals Technical Assessment 351 are fulfilled.