Hi, have a brick garage that is leaking severely. Have patched it with felt to no avail. The Panels that cross the beams have taken in a lot of water and have expanded and are failing. the roof is now dipping between beams in several spots and water collects in several spots across the roof. The guy who built it seems to have made it completely flat and there seems to be no run off. :(
Anyway, I realise I need to replace some of these panels and then re-felt over it. But the question is, what are the best panels to use for the flat roof section and whats the best felt to put over it??