Insulation PE: Insulation PE(Polyethylene) is a popular insulation in the country. The insulation is structured as a closed cell making it not absorbing moisture making it not damp inside thus durable to exterior conditions. It has a strong resistance to acid and alkali corrosion, reflects heat, helps prevent heat transfer to the building and prevent the loss of coolness from the inside. This type of insulation can be installed by the steel roof or stretched to the structure. Its selection of thickness ranges from 4-10mm.