As part of Xtratherm’s extensive range of high-performance tapered roof boards, these TR/BGM polyisocyanurate boards can help provide a complete solution for your tapered roof project. Featuring a polypropylene fleece finished bitumen/glass fibre working surface and a mineral glass facing on the underside, they are ideal for use below most bitumen-based partially bonded built-up roof systems.
Suitable for both refurbishment and new build projects, these TR/BGM tapered roof boards can also be used on roof decks that are subject to limited maintenance foot traffic. The fall on your flat roof should be designed to ensure that rainfall does not pond, and these boards deliver a practical solution to water ponding with drainage and insulation in a single system.
Features & Benefits: Xtratherm TR/BGM Tapered Roof Board 50-70mm – 5.76m2
- Suitable for refurbishment and new build projects
- Practical solution for water ponding with drainage and insulation of a single system
- Compatible with most bituminous-based roofing systems
- Thermal conductivity of 0.024-0.027W/mK
- >150kPa compressive strength at 10% compression
- 32kg/m³ foam core density
- Four boards per pack
- 1.44m² board size with 5.76m² total coverage
- 1:60 fall
- 1200mm length x 1200mm width x 50-70mm thickness
Made from a non-deleterious material with zero ODP and low GWP and without the use of HCFCs or CFCs, these Xtratherm high-performance rigid insulation boards offer a thermal conductivity of as low as 0.024W/mK.












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