I have been quoted for a re-roof (tile) and the builder tells me that he has to use a thin membrane under the tiles due to building regs. I thought that the correct material was the traditional thick black coloured felt?
Can anyone advise please.
Assuming you have a loft in the roofspace (not a habitable room) the underfelt can either be a breathable membrane without cross ventilation of the loft space (but ventilation is required above the membrane) or standard slaters felt with cross ventilation of the loft space.
For a total re-roof your local BI will expect to be involved - check with them if they have any special requirements.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!