Thickened thermal insulation rolls can be used as building insulation materials. The middle layer material of the insulation pad is mostly polyethylene bubble or foam, and the outer layer is aluminum foil. Therefore, insulation pads not only have excellent heat insulation, heat reflection and heat preservation functions, but also have good applications in house construction (roofs, walls, floors). It can play a very good role in moisture-proofing, heat preservation and energy conservation.