Insulation

Roofers looking for an easy-to-install, cost effective insulation solution for light weight roofs have a tailor-made product to turn to: Roofmate LG-A from Dow Building Solutions. The product is designed for buildings where limited roof top access is expected and can also be used alongside Dow’s Roofmate SL-A boards as an insulation solution for parapets.

Roofmate LG-A comes with a 10mm modified concrete topping to minimise cost and installation time, making it ideal for projects where time is of the essence, such as schools trying to schedule building work around term times. One such school is Harris Academy in Dulwich, East London, which is due to move from temporary accommodation to purpose-built facilities in September 2010. 1,500m2 of Roofmate LG-A has been installed on the project within tight timescales.

The product is part of Dow’s environmentally-advanced Styrofoam-A range, which uses technology that takes CO2 from industry and uses it as a blowing agent in order to create blue extruded polystyrene foam with a Global Warming Potential (GWP) of less than five.
Roofmate LG-A boards are widely available in thicknesses of 80mm plus the 10mm topping - but thicknesses of 120mm and 180mm plus 10mm topping can be made to order by special arrangement. All boards are:
• tongued and grooved on long edges so they lock together for continuous insulation, eliminating thermal bridging;
• light enough for one man to handle;
• capable of being cut and shaped on site with a masonry saw;
• installed in one easy operation, avoiding the extra cost and time of a ballast layer.

Roofmate LG-A is also designed to minimise the effect of wind uplift. Joints between boards interlock, but are not airtight, meaning differences in pressure between top and bottom surfaces - produced by wind blowing across the roof – rapidly equalise, reducing uplift forces on the insulation.

www.styrofoam.co.uk