Commercial Roof Repair: 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.

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.

Repair makes sense on an Excelsior roof with life left and one localised failure. Once the covering is past its service life, repairs buy months and a replacement buys decades.

We start at the flashings, check the deck from inside the attic, and photograph every elevation. On an Excelsior property we pay particular attention to dried-out underlayment and attic temperature.

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

Granules in the gutters, curling tabs, repeat stains in the same ceiling after every storm, and soft spots underfoot. In Excelsior, asphalt dries out and sealant pulls back from penetrations years before the field wears through.

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.

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.