Free Roof Program: Costs, Lifespan and Alternatives

Excelsior sits in San Francisco County and takes long dry heat, hard thermal cycling and rain that arrives in a few concentrated storms. In practice that means asphalt dries out and sealant pulls back from penetrations years before the field wears through.

A full replacement in Excelsior is permitted and inspected through the San Francisco Department of Building Inspection. Small repairs generally are not, but the layer count and assembly are checked on any permitted job.

Check the licence, liability cover and workers' compensation, then ask any Excelsior contractor what happens if the deck is worse than expected — and get that answer in writing before the covering comes off.

Yes. Excelsior is about 338 miles from our West Los Angeles yard, and we work it alongside Glen Park, Outer Mission and Crocker-Amazon on the same routes.

Yes. Low-slope sections on Excelsior buildings need a membrane or coating system rather than shingle laid flatter than it is rated for, and they are quoted separately from the pitched roof.

One to three days on a typical Excelsior property, depending on size, pitch and how much deck needs replacing. Nothing is left open overnight.

Size, pitch, layer count and deck condition drive the number on any Excelsior roof. The line that moves is deck repair, so it belongs in the Excelsior quote at a rate per sheet rather than as an allowance.

In inland conditions, composition shingle runs roughly fifteen to twenty-five years, tile underlayment twenty to twenty-five, and coatings seven to fifteen depending on the system.