Miofol® 170AG is a micro-perforated, water-repellent and permeable aluminium membrane. The back of the membrane has been reinforced with a polypropylene webbing, which has been overlaid with an LDPE coating. The aluminium side is coated with UV-stabilised LDPE, which means the aluminium can resist the negative effects of alkaline. The aluminium surface reflects heat radiation, which helps to ensure higher heat resistance. The unique micro-perforations, and the density of these perforations, ensure the best possible water-resistance in this category, while retaining high permeability.