- Joined
- 21 Jan 2024
- Messages
- 22
- Reaction score
- 1
- Country

Hi guys,
we have to redo our failed flat roof. Leaking from outside and also sweating like hell due to very poor ventilation.
We cant convert it to a warm roof.
We have existing EWI on abutment walls to the flat roof.
How do we detail the single ply membrane of the new flat roof to the EWI (Assuming a certain amount of ewi has to be stripped back to masonry) and maintain the minimum 50mm of space between OSB and insulation and allow venting on the abutment wall?
Thanks a mill
we have to redo our failed flat roof. Leaking from outside and also sweating like hell due to very poor ventilation.
We cant convert it to a warm roof.
We have existing EWI on abutment walls to the flat roof.
How do we detail the single ply membrane of the new flat roof to the EWI (Assuming a certain amount of ewi has to be stripped back to masonry) and maintain the minimum 50mm of space between OSB and insulation and allow venting on the abutment wall?
Thanks a mill