UNDER ROOFING SOLUTIONS

UNDER ROOFING SOLUTIONS

Onduline under roofing solutions are installed under the existing roof: they are not visible from the outside of the building, but they are designed to ease the installation on-site for roofers and improve the well-being inside the building for the inhabitants.

ISOLINE is one of the under-roofing product line that we like to call "a roof under the roof". With time, tiles can move, break, freeze, become porous... Our ISOLINE system creates another layer under the original clay tile roofs. This system ensures long-lasting waterproofing. With ISOLINE, we add a small weight (3 to 4 kg by m²) and we keep the existing tiles (when they are in good shape). The original aesthetic of the building is preserved, while the building’s waterproofness has been improved.

With this under-roofing solution, people living inside the building benefit from better thermic and acoustic comfort – as the rain noise is reduced. Ventilation is optimal with our under roofing solutions, meaning that between our Isoline tile and the roof, the tile doesn't stay humid and therefore, last longer. It also allows for having a roof with a lower slope degree, which means more space available in the attic.

Another benefit is the building is made waterproof fast, which can be useful in some cases. Thanks to their size, ISOLINE under-roofing sheets protect about 2 m² of the roof as soon as they are installed. They bring immediate weatherproofing.

The time needed for workers on the site is also reduced as it is easy and fast to install. The ISOLINE under-roofing sheets have a specific shape that is thought to be quick and simple to install. They have a specific form to ease the lay down of tiles and their alignment.

ISOLINE Under-roofing systems can be applied progressively by vertical columns, allowing a step-by-step progression of the renovation. There is no need to stock or move up and down the existing tiles, they can just be put aside during the time of the installation. Their rough surface is designed to maximize anti-slip performance.