Onduline offers over-roofing solutions: in other words, a roof over the roof to avoid leakages and improve comfort inside. We also call this method reroofing or roofing over an existing roof.


How is reroofing possible?

The first step is to cover the existing roof with battens and then place the tiles or shingles on the battens.

This is the only constraint. Once this step is done, there is no need to reinforce the existing structure or to fix the existing breaches or leaks.

The new roof can be installed straight away.


Why opt for Onduline reroofing solutions?

There are a lot of reasons to opt for a reroofing solution. The first that come to mind are the time saved and the solution's sustainability.

In some buildings, renovating or replacing the roof means that the activity inside the building has to stop. At crucial times of the year or for security reasons, this is sometimes impossible. For houses, the over-roofing solution allows the family to remain at home while the works are being done – no need to move elsewhere during construction.

In those scenarios, roofing over an existing roof is a very practical and convenient solution, and sometimes the only one applicable.


Roofing over the existing roof: what about asbestos?

Onduline over roofing solutions are compatible with existing roofs with or without asbestos.

In the case of an existing roof without asbestos: a classic over-roofing installation with drilling will be used.

In the case of an existing roof with asbestos: an innovative method that does not require drilling, called ONDUCLAIR RENOV, will be used.


Please contact your local team to find out more and find the adapted over-roofing products and solutions for your project!

Onduvilla roof protecting a villa


Unique roofing solution with an aesthetic traditional clay tile look



Asphalt shingles for all application types

Entrepôt en Onduclair Protect


Transparent and opaque solutions in polyester and polycarbonate for roofing and cladding



The original lightweight roofing systems

onduline tile red


Lightweight, aesthetics, large-sized roof panels

Get inspired

Have a look at our references from all over the world. Our local teams can show you more pictures and videos if you want. Just contact them!