ISOLINE is a lightweight corrugated-bitumen under-roofing system installed beneath tiles or slates to provide a continuous secondary waterproof layer. The sheets channel infiltrated water towards the gutter while their corrugated profile creates ventilation beneath the roof covering, helping reduce moisture accumulation and extend the service life of the tiles.
Weighing approximately 3 kg/m², the system is easy to transport and handle and is installed dry without mortar. It is suitable for new-build and renovation projects and can allow serviceable existing tiles to be retained, helping conserve materials and the original appearance of older roofs.
The sheets contain up to 51 percent recycled material, principally cellulose fibres recovered from waste paper and cardboard, and are supplied with a 30-year warranty when installed in accordance with the manufacturer’s instructions.
