Having recently replaced the old 1995 flat roof on an extension, I forgot I took some pics. I had wondered, at the time, about the make up of the roof
This is the roof in question
It was made up of 18mm ply on 4 X 2's, then 25mm of celotex type material laid across the 4 x 2's ...
Then several layers of felt. Problem was that some of the insulation had compressed, allowing water to pool and rot my barge boards and leak down the sides into the room below.
Is/Was it usual to felt on top of this celotex type stuff?
No concerns just interested.
This is the roof in question
It was made up of 18mm ply on 4 X 2's, then 25mm of celotex type material laid across the 4 x 2's ...
Then several layers of felt. Problem was that some of the insulation had compressed, allowing water to pool and rot my barge boards and leak down the sides into the room below.
Is/Was it usual to felt on top of this celotex type stuff?
No concerns just interested.