Flat Roof Insulation Board

Flat roof insulation is also used with conventional bur and mechanically or adhesively attached single ply and modified bitumen membranes when field applied cover boards are used.

Flat roof insulation board.

Retroplus roof board is an expanded perlite mineral aggregate board. The rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Utilizes an environmentally compliant blowing agent containing pentane hydrocarbon to enhance the thermal performance of the foam insulation. We recommend having at least 20 r value worth of material for optimal energy efficiency.

While expensive the best insulation is polyiso rigid foam. With solutions ranging from our optim r vacuum insulation panels to our therma range of pir insulation we can provide the best solution for flat roof insulation for roofs with mechanically fixed bonded or torch applied waterproofing systems. For a 1 inch board equivalent of 6 r value. You can expect to pay about 55 100 sq ft.

Here are the best insulation materials along with prices features and r values. Flat roof insulation installation. It is top quality and the most cost effective product for your flat roof. Flat roof insulation is unfaced polustyrene and is suitable for use with loosely laid single ply membranes.

2020 insulation cost estimate foam board insulation prices. The average cost of flat roof insulation is 0 67 per square foot for 1 inch thick polyiso with 6 r value. Foam control plus flat roof insulation.