TPO Membrane Roofers: Costs, Lifespan and Alternatives

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

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

Pitch and exposure decide it before appearance does. Given inland conditions in South of Market, 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 South of Market, asphalt dries out and sealant pulls back from penetrations years before the field wears through.

Yes. South of Market is about 339 miles from our Santa Monica yard, and we work it alongside Tenderloin, San Francisco and Mission Bay on the same routes.

A full replacement in South of Market 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.

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