
How to insulate inverted roofs
Find out what U-values inverted roofs should achieve and which insulation products are best suited.



The OPTIM-R E Inverted Roofing System is perfect for projects that require the lowest U-value or the thinnest roof build-up. It is ideal for where there is little space for installing new roof insulation. OPTIM-R E is encapsulated in a coating for increased robustness and easier handling on-site. The vacuum insulation panels are accompanied by rigid extruded polystyrene insulation infill panels which can be cut to fit around problem areas such as roof lights or ventilator kerbs.
Product Highlights
Optimum performance insulation with a declared thermal conductivity as low as 0.008 W/mK
Ideal for constructions where a lack of construction depth or space is an issue
Protective coating for increased robustness and easier handling
Compatible with green roof systems