There is a wide range of roof insulation materials to select, so it is difficult to make a choice. Actually, the first point that you need to concern is the insulation value (R-Value),. The lower this number, the better the insulation effect.
CYG provides low thermal conductivity cross-linked closed-cell polyethylene foam for customers, which can reach to 0.038 W/mk，with lamination with the aluminum foil on the surface, it has better heat resistance. So it is widely used in roof insulation.