Preston roofing guide
Extension Roof Leak Repairs in Preston
On an extension roof, leaks often start where the new roof joins the original house rather than in the middle of the roof covering.

Inspect the wall above
Open pointing, cracked render and window sills can feed water into the junction.
Check the pitch
Some tiled extensions are simply too shallow for the covering used.
Movement can open joints
New and old parts of a house can settle differently.
Want the roof looked at?
Tell the roofer what you have seen and what the weather was like when it happened. If you can take a photograph safely from the ground, include one that shows the whole area of roof.
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