Enquire:
www.dcep.co.uk Tel: 01630 673000 Fax: 01630 673247 Email:
dce@directcontact.demon.co.uk Post: use the Enquiry Sheet --- Advertorial --- Enviro-roofing with Single Ply
Both EPDM and TPO membranes are formulated from ingredients with low environmental impact and achieve a long service life well in excess of 30 years. Due to this increased life expectancy, the average annual environmental impact of the roof system may be reduced.
Furthermore, EPDM and TPO membranes can be worked with many years after the original installation and it is therefore possible to extend the life of the roof system even further with simple remedial attention, consequently driving the average annual environmental impact of the system even lower.
With the increased specification of environmental initiatives, such as garden roofs, photovoltaic and rainwater harvesting systems, the roof has become an important part of our commitment to the environment, helping to reduce Co2 levels and contributing to a better environment for us all to live in.
The demands of modern construction programmes have led to the popularity of Single Ply waterproofing membranes, on both new-build projects where safe and fast installation techniques afford great benefit on fast-track projects, but also for refurbishment projects where Single Ply provides a cost- effective, high performance solution.
Protecting the environment is an important global concern, and at Firestone we believe that good practice design is essential for the long term and trouble free service life of such roofs.
Correct specification of the supporting structure, roof deck, slope, vapour control layer, insulation and waterproofing system are all critical for the roof to deliver its full environmen- tal benefit.
The Single Ply Advantage
The biggest impact on the environment for any man-made product is during manufacture. Many single ply membranes are now produced in facilities which are not only certified with ISO9002 quality management systems but also with ISO14001 environmental management systems which combine to ensure consistent high quality with reduced environmental impact.
Polymeric single ply membranes generally fall into two categories depending on the material characteristics.
Thermoset (rubber) membranes, such as EPDM (Ethylene- Propylene-Diene-M class rubber) have high flexibility and elastic properties - essential to cope with building and thermal movement, combined with outstanding resistance to UV degradation.
Thermoplastic membranes, of TPO (Thermoplastic PolyOlefin) combine the flexibility and elastic nature of EPDM rubber with hot-air welding ability and highly reflective UV-resistant finishes associated with plastics.
Durable Systems
Single ply systems, by their nature, involve a single layer of waterproofing. Whilst single ply membranes are durable to the limited foot traffic, it is essential to afford greater protection and durability to the membrane where green roof or photovoltaic systems are concerned.
Upon completion of the waterproofing installation, it will be necessary for additional access to the roof whilst the green roof or photovoltaic system is installed. During this time accidental damage to the waterproofing membrane could occur. Furthermore, photo- voltaic systems may require additional increased access during the service life of the roof. A single ply membrane with a minimum thickness of 1.5mm which is fully bonded to the substrate will be more robust in such situations.
It is equally important that the support of the waterproofing membrane is firm, exhibits good resistance to compression, and is free from any sharps or points - such as those presented by metal fastener heads. The use of thin, high- density, cover boards which are adhered to the surface of the thermal insulation can provide an optimum substrate for adhered single ply membranes.
Details To quote the founder of our company, Harvey S. Firestone - “Success is the sum of the details”. This is true with ‘enviro- roofing’ systems.
Penetrations through the roof need to be flashed correctly, and waterproofing
termination heights need to be maintained above
the roof surface. Drainage points need to be kept clear of any vegetation, as do perimeters and abutments. Single Ply systems incorporate materials and application techniques which can cope with any such situations.
CPD
At Firestone we believe that CPD is an essential way to educate, update and inform design professionals with regard to the latest developments in single ply technology. We very much welcome your participation in a forthcoming Firestone CPD, and in conjunction with our partners at Direct Contact Exhibitions, will be happy to provide further detailed information during the event. See this presentation at Wilmslow on Oct 25.
Roofs
Pic 2
Fig.1 The average environmental impact of roof systems can be reduced using single ply. Reader Enquiry: 33
www.firestonebpe.com 01606 552026 Reader Enquiry: 34 23
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