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Workmanship & Inspection
Workmanship
The material differences of the various single ply membranes, with respect to fixing and jointing, demand that the contractor is fully experienced and conversant in the handling and installation of the various materials.
SPRA manufacturer members ensure the contractors they recommend have this relevant experience, which involves extensive in-house and onsite training. Whilst some trained contractors can consequently handle several of the range of single ply materials available, the majority of general roofing contractors will have had no such experience and should not therefore handle single ply materials.
Working with SPRA, the Construction Industry Training Board (CITB) has developed a training resource for introductory training. A Vocational Qualification (NVQ – England, Wales and Northern Ireland, SVQ – Scotland) is available at levels 1 and 2 (‘Applied Waterproof Membranes - Single Ply Roofing’).
SPRA members are already adopting this certification for their trained contractors. It should be noted that the inherent advantages of single ply can only be fully exploited and demonstrated, when installed by contractors who are adequately trained in their specific use.
Inspection
During the course of construction, routine interim and final inspections should be carried out in accordance with specific manufacturer’s instructions. This is the primary responsibility of the roofing contractor. However, the client and/or main contractor (if any) should be aware that the SPRA Code of Practice requires that manufacturers make recorded inspections before a guarantee is issued and may make inspections of other work as appropriate.
Integrity Testing (pdf)
© 2006 Sarnafil Ltd. Legal Disclaimer
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