Had to go up into the loft over Xmas and noticed an awful lot
of condensation on the roofing felt lining!
This presumably is bad, also patches of white mould on the roofing
which were also slightly damp. The roof isnt shot so its not leaking.
I need to get this sorted out and find out whats causing it.
I think one of the causes could be warm damp air from the
house rising through our poorly fitted loft hatch so Im
thinking of fitting a new air tight UPVC loft hatch.
We have two tanks in the loft, one for DHW and the
other as the expansion, neither have proper lids.
They are simply covered by poly wrapped fibreglass.
I am thinking of replacing both with new tightly fitted
(BTW overpumping is not happening I checked for that)
Add more ventilation to the soffits.
What do you think? I presume replacing the tanks would require
some replumbing so could be a bit tricky.
Thanks for any pointers.
- posted 12 years ago