This comes up constantly, and the useful version of the answer is shorter than most of what is written about it. Here is how roof inspections actually works for a homeowner in Los Angeles,…
After eight or nine dry months, the first sustained rain is the first real test the roof has had since spring. In Los Angeles that window runs roughly October and…
Offshore pressure gradients drive dry air down through the passes and canyons, and the valley sits directly in the path. In Los Angeles that window runs roughly September through…
Valleys carry the most water of any part of a roof. Open metal valleys corrode at the center line; closed-cut valleys fail when the cut was made too tight to the…