Thanks to the double-sided and numerous micro-perforations (25/m²), Biplex+ guarantees a quick and efficient disposal of condensation. Furthermore, the product guarantees better ventilation under roofs through the efficient disposal of moisture and vapour. It is flame-retardant according to EN 13501-1, result class E, and is made of polypropylene copolymer and is completely recyclable (class 5). Biplex+ has ATG approval as under-roof sheet (certificate ATG 1926) and has the European CE label with CE EN 13859-1 approval.