We use a high-quality aluminium foil to effectively isolate the house. The foil has a 14-layers laminate fibre system with only 7mm thickness. Despite it, its heat reflection value is 96% like in a standard 120mm insulation thanks to infrared reflecting surface. The foil protects the house from cold in winter and heat in summer, which helps to save costs. Thanks to it, you can also enjoy more space in the house.