Rooftop insulation phenolic board can not only provide insulation, but also serve as a waterproof, moisture-proof, and soundproof material. Usually, in order to increase the insulation effect, many insulation materials increase their thickness, which greatly increases the usable area during construction and occupies a large indoor space. The aluminum foil phenolic insulation board can achieve a density of 100kg/m ³ and a thickness of 2cm. The aluminum foil covering can effectively resist heat source radiation and block heat transfer. The phenolic material in the middle can effectively isolate cold and hot air and water molecules because of its closed cell foam structure, with low thermal conductivity and good thermal insulation effect. Due to the high density of phenolic materials, the thickness of the board is 2cm, and the hardness is also sufficient. The construction is convenient during use, the board occupies less space, and the insulation effect is not inferior to other insulation materials with a thickness of 5cm or even thicker.

Phenolic roof insulation boards are the most productive type of rigid phenolic core, foil-composite insulation presently accessible for use in domestic buildings of new and existing warm pitched roof constructions where the ceiling follows the pitch of the roof and encloses a habitable space. The product is also good to be used as an insulation above the rafters and as a thermal insulation board between and below rafters, in tiled and slated pitched roofs.

Phenolic board itself has the characteristics of fire resistance and flame retardancy, with an oxygen index of 50, and is a thermosetting B1 level fireproof material. The thermal conductivity coefficient of phenolic board is between 0.020 and 0.025W/(m·k), so the insulation effect is outstanding, which can effectively insulate, keep cold, and prevent freezing and thawing.