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Low Carbon

A single ply roofing system is a low carbon solution

Single ply roofing systems can deliver very low carbon solutions in several ways;

  • Low embodied energy: a typical single ply membrane is just 1.2mm or 1.5mm thick and of weight in the range 1.5-2.0Kg/m2. Embodied energy is factored into Life Cycle Assessment. Advanced production techniques and closed cycle processes have reduced energy demand and waste. Data on embodied energy will be available in manufacturers’ declarations to EN15804.
  • Lightweight systems: because systems are lightweight, they require less structural support. For example, a U-value of 0.12W/m2.0K can be achieved with a warm roof system at a total system weight of approximately ??? (metal deck) and ??? (timber panel deck).
  • Ultra-low U-value systems: single ply roof systems in the warm roof configuration can deliver low thermal transmission without losses due to thermal bridging or risk of interstitial condensation. For example, a U-value of 0.12W/m2.0K can be achieved without thermal bridging within a total roof zone depth of less than 430mm (steel deck) and 380mm (timber panel deck) from the top of details to the underside of the supporting deck without the need for roof void ventilation.
  • Low installation energy: innovation is at the heart of SPRA’s objectives. Because it represents the full supply chain it can harness the experience of both manufacturers and specialist contractors to constantly review working practices. For example, heat-weld technology is extremely efficient; new fastening techniques, wider membranes and weather-tolerant adhesives also improve productivity and reduce energy use.
  • Renewables: single ply roofs can be integrated with a range of energy capture equipment, which can be sited at roof level so as to minimise visual intrusion, maximise exposure to solar radiation and wind. Options include support rafts and frames to which equipment can be mounted, allowing change without affecting roof integrity, and photovoltaic panels integrated with membranes.
  • Regulations: SPRA has been an active participant in consultation with HM government on the revision of The Building Regulations Approved Documents Part L in 2006, 2010 and 2013.

Quick links

  • Life Cycle Assessment
  • Green Guide & BREEAM
  • Durability
  • Recycling
  • End of Life
  • SPRA Technical Guidance
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  • Registred Address
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    Clay Cross, Derbyshire, S45 9JW

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