Silicone Roof Coating: Costs, Lifespan and Alternatives

Castro 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.

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

One to three days on a typical Castro 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 Castro roof. The line that moves is deck repair, so it belongs in the Castro quote at a rate per sheet rather than as an allowance.

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

Pitch and exposure decide it before appearance does. Given inland conditions in Castro, reflective coverings and real attic ventilation make the biggest difference.

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

Two visits a year: clear valleys and gutters before the rains, then check flashings after the first real storm. In Castro that matters most because asphalt dries out and sealant pulls back from penetrations years before the field wears through.