Roofing Question

Mystery leak in roof after missing slate replaced and felt put underneath

I hope you can give me some advice. I own an 1880's sandstone mid-terrace house and a couple of years ago my attic was dripping due to a missing slate. A builder replaced the slate and put felt underneath (there is no felt anywhere else on the roof). Since then, I have had major problems which no-one seems able to fix.

During heavy rain, water is running down the walls in the attic causing them to become soaking. 3 builders have inspected the roof and all say it appears to be in good condition and cannot find fault. Various other parts of the house are also damp which I'm assuming is connected to this issue. I have spent thousands trying to resolve this with no luck.

If you want to ask me any questions, please do not be too technical as I know nothing about roofs!

NB. Re-pointing has been done on the house, but before my time. It looks in good order. I believe the roof is original to the house (1880's).

1 Answer

Best Answer

Without looking at the house it is not possible to be 100% sure of what is causing the problem. Have you had the walls re-pointed? How old is the original roof?

Could be the walls have been re pointed with a cement based pointing? This will trap water in the structure of the building of course once the sandstone is soaking wet it will transfer into the inside.

Could be the fact the roof slate is breaking up where you cannot see them as most of the roof slate on a roof is overlapped and hidden.

Answered 19th Oct 2013

ADR Property Maintenance

Member since 1 Mar 2009

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