Isoline is a special waterproofing sheet applied under the roof titling. It is compatible with all type roof tiles. An air space resides beneath the Isoline gutter. This space helps to discharge the vapor inside the building before it condenses, creating an air circulation over the heat insulation materials.

Additionally, the flow of air created among the roof tiles and Isoline allows rapid drying of roof tiles. Roof tiles are laid into the special battens fixed to the Isoline sheet. An aesthetically appealing look is thereby obtained with easy and fast workmanship. The system's applications is very easy and compared with full desk roofing systems this application technique availed by the highly strong structure of Isoline.