Mission Bay Roof Coating

A full replacement in Mission Bay 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.

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.

Mission Bay 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.

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

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

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

Two visits a year: clear valleys and gutters before the rains, then check flashings after the first real storm. In Mission Bay that matters most because 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 Mission Bay contractor what happens if the deck is worse than expected — and get that answer in writing before the covering comes off.