Some of the time leaks are caused by damage or deterioration of the tiles, flashings and other parts of the roof.
But, sometimes tiled roofs leak even if there is nothing wrong with the tiles. This happens to older roofs because the underlay - the waterproof sheet under the tiles - rots. When rain blows under the tiles it drips onto the ceiling.
Replacing the underlay is expensive. All the tiles and battens (strips of wood that support the tiles) have to come off. You always need new battens and often new tiles if the old tiles can't be reused.
We waterproof older tiled roofs by sealing the gaps so no water can get in. It's faster, less risky and much cheaper than replacing the underlay. Here's how:-
- We apply a first coat of sealant which closes any small holes.
- Once that's dry we caulk bigger holes and gaps between tiles with a thicker sealant.
- Then, we finish by spraying a final coat.
The sealant comes in any colour you want. It looks great and lasts.
