help flat roof
Information, help and advice on maintaining, installing and repairing a flat roof. Post your questions and view answers here

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dozydave2
Labourer
Labourer
Posts: 2
Joined: Sun Dec 09, 2012 5:20 pm

help flat roof

by dozydave2 » Sun Dec 09, 2012 5:28 pm

hi all,
I have detached house built 1972 in very exposed seaside area.
In high winds the rain literally comes at us sideways and up.
We have built a new flat roof extension (as the last one leaked).
After new roof it still leaks?
We had cavity wall insulation (good idea at time!) 4 years ago.
it appears that the rain driven in under tiles then runs down into cavity and tracks across until it comes out through render in the new extension.
The felt under the tiles is ripped so we are going to replace felt and retile first 4 x rows of tiles.(when weather allows).
Should we close the cavity at roof height? or as there is no cavity closer above the flat roof can one be cut into block work like a flashing?
Any help or suggestions grateful.

stoneyboy
Project Manager
Project Manager
Posts: 6419
Joined: Wed Dec 10, 2008 6:44 pm

Re: help flat roof

by stoneyboy » Thu Dec 20, 2012 5:10 pm

dozydave2,
Re-felt up the roof until you get to a sound underfelt but you will need to tuck the new felt under the old felt at the top and over the flat roof felt.
Don't bother about closing the cavity.
end

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