Roof Inspection: Process, Costs and What to Expect

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

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.

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

Tenderloin 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.

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

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

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

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