TPO Membrane: Costs, Lifespan and Alternatives

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.

Yes. Low-slope sections on Castro 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.

Yes. Claims on Castro properties turn on documentation taken before anything is tarped or cleared, and we work alongside the adjuster rather than around them.

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.

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.

We cover Castro across San Francisco County, including Noe Valley, Twin Peaks and Cole Valley, and the rest of the service area listed on the site.

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.

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