I mean the original roof has rosemary roof tiles and due to height restrictions with the hips my new extension had to have a significant top section which is a flat roof.
I would appreciate some advice on the damp/mould issue.
will vents higher up, ie above the insulation help?
I'm very...
I have recently built an extension.
Due to roof on original I have had to put the top section of the new roof in a flat roof.
I used a single ply membrane. It was completed around two months ago and already all the ply on the underside is covered in mould.
im fairly sure there is no leak and...