Hi All,
I've just had my roof replaced with new roof tiles using new under tile breather membrane. But especially in the area under the roof slope between the loft room and the breather membrane, it appears that condensation (water beading) is occurring on the inside surface of the membrane.
This can only be seen by looking from the under-eaves storage area upwards to the air gap between the room side insulation board and the breather membrane.
When I first saw this problem it was very cold and I was originally advised this was a temporary problem that would go away once everything was finished off - but it's still happening. If this "only" occurs in cold weather then this still is unsatisfactory as it will rot the roof timbers. Should I get a surveyor on to the problem?
Any advice? Where does the problem lie?
Tom