Roof Coating in Walnut Creek, CA

Roof coating is a liquid-applied membrane that bonds to a prepared substrate and cures into a waterproof layer. Silicone coating handles ponding water and stays flexible through the seasons, while acrylic coating breathes better over shingle and metal.

Every job starts with a roof condition survey. We scrape failing material, replace wet underlayment or sheathing, prime bare spots, and reinforce seams with fabric before the finish coat. Coverage rate and cure time decide how many passes we schedule.

Cost tracks square footage, roof pitch, and how much prep the surface needs. A reflective coating runs a fraction of a full roof replacement, and it buys real time on a rooftop that is still structurally sound.

On site you will see a ladder at the eave, a safety harness anchored at the ridge, and a scaffold on steep sections.

A pry bar and roofing shovel strip the failed material, while a roofing square, nail gun, and air compressor handle layout and fastener work.

Coating is the wrong product over active rot, a sagging roof deck, or granule loss that has worn through the mat. If the structure moves underfoot, we say so and quote a replacement instead.

Before we quote a coating job, we look at:

• Roof pitch and drainage, because a low-slope section that holds water needs silicone coating rather than acrylic coating.
• Substrate condition, including bare asphalt, rusted metal panel, and any failed bitumen cap that has to be scraped flat.
• UV degradation across the field, which shows as chalking and granule loss long before it shows as a leak.
• Seam and flashing condition at every penetration, since that is where water wicks in first.
• Blistering and soft spots that tell us whether the insulation below has taken on moisture.
• Ventilation, soffit vents, and attic fan performance, because a hot deck shortens coating life.
• The vapor barrier under a low-slope deck, since trapped moisture will peel a coating right off.
• The roof deck itself, whether plywood, OSB, or plank sheathing, checked for rot, decay, and sag.
• Existing roofing felt and tar paper layers, which have to be feathered flat to avoid a lumpy finish.
• Building code requirements for the roof assembly, including any permit the county wants on file.