10 Roof Goofs and How to Fix Them
Installation mistakes are often to blame for leaky roofs
Surprisingly, it is not damage from wear and tear that causes most roof leaks but mistakes made during installation or reroofing. This article uses photos and drawings to illustrate what those mistakes are and what you can do about them. The advice is helpful whether you are trying to fix a leak or simply installing a new roof that you hope won't leak.
From Fine Homebuilding172
, pp. 84-89
July 1, 2005