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Onduline offers over-roofing solutions: in other words, a roof over the roof to avoid leakages and improve the 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 comes to mind is 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 is 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.