Name: San Ramon Roof Repair
Telephone: 9257239025
Price range: $$

What Roof Coating Involves

Roof coating is not a paint job. It is a engineered system: a primer, a base coat, and a top coat—each formulated for your exact membrane and substrate. For most San Ramon commercial roofs, we work with silicone coatings (GAF Unisil, Henry, Tropical Roofing), which stand up to ponding water better than acrylics. Acrylic elastomerics are less expensive but fail if water sits for more than 48 hours. Polyurethane coatings are the toughest, but they require a moisture-cured primer and precise application.

The crew first pressure-washes the roof to remove dirt, loose granules, and old sealants. Then we repair any open laps, blisters, or punctures. We set the fasteners with ring-shank nails where the deck is soft—that's a sign of rot. We prime the seams with a self-adhered flashing tape, then roll on the coating in staggered courses, building to the manufacturer's dry mil thickness. A typical 20,000-square-foot roof takes four to six days, depending on how many penetrations and parapets need hand-sealing.

We also check the substrate. If the existing membrane is delaminating or the insulation is wet, coating over it wastes your money. In that case, we'll tell you a recover or tear-off is the honest fix. But if the deck is sound, coating is the most cost-effective way to add years of service life.

Signs You Need Roof Coating

Watch for these failure modes on your San Ramon roof:

Ponding water that stays 48 hours after a rain—silicone coatings are the only type that tolerate standing water.
Seam separation or tenting at the membrane laps—water will wick under the seam and erode the adhesive.
Blistering or alligatoring on the surface—that's the top layer oxidizing and flaking off.
Flashing pulling away at the parapet or the curb—a gap that lets rain seep behind the membrane.
Interior staining along column lines or near walls—the first sign of a slow leak that's already decaying the deck.

If you see any of these, call us for a roof asset survey. We'll document the condition with photos, measure moisture with a meter, and give you a written report. Coating is a preventive measure—once the deck rots, you're into a full replacement.

Our Roof Coating Process

We follow a specification-driven process, not a generic four-step pitch.

Roof Asset Survey — We walk the roof, map every penetration, measure ponding areas, and test moisture levels. You get a condition report with photo evidence.
Specification Review — We match the coating system to your membrane, substrate, and budget. We'll explain the difference between a 10-mil acrylic and a 20-mil silicone, and why the warranty depends on the dry film thickness.
System Install — The crew repairs all substrate issues, primes the seams, and applies the coating in staggered courses. We back-nail any loose insulation, hand-seal every fastener, and clean up daily.
Warranty Enrollment — We register the system with the manufacturer (GAF, Henry, or Tropical) so you get a NDL warranty that covers the coating and the labor.

We coordinate with your tenants so the work doesn't disrupt their day. We'll post notices, keep noise down during business hours, and make sure the roof is watertight overnight.

Cost Considerations in San Ramon

Roof coating costs $2.50 to $5.00 per square foot for a commercial roof in San Ramon, depending on the system and the condition of the existing membrane. A 20,000-square-foot roof runs $50,000 to $100,000. That's 40–60% of the cost of a full tear-off and replacement, and it extends the life of your roof by 10–15 years. The payback on energy savings alone—reflective coatings cut cooling costs by 15–25% in our hot, dry summers—is usually under three years.

We'll give you a line-item estimate after the survey, so you know exactly what the primer, coating, and repairs cost. No surprise change orders.

Warranty & Insurance

All coating systems from GAF Unisil, Henry, and Tropical Roofing come with a manufacturer's NDL warranty—that's 'no dollar limit'—covering the coating and, in some cases, the repair labor. We handle the paperwork, including the pre-installation inspection photos that the warranty requires. If your roof has storm damage, we'll document it for your insurance claim and work with your adjuster. We're a licensed contractor in Contra Costa County, and we carry full liability and workers' comp insurance.

Why Choose San Ramon Roof Repair for Roof Coating in San Ramon?

We've coated roofs across Windemere, Canyon Lakes, Norris Canyon, Bollinger Canyon, and Country Club Estates—from the 1970s Spanish-style stucco buildings to modern two-story tract homes and custom estates. San Ramon's hot, dry summers stress roof materials; the occasional heavy winter rainstorms expose every weak seam. We know how to spec a coating that survives both. We're local, we answer the phone, and we stand behind the work. Call 9257239025 for a site survey.

Signs You Need Roof Coating

⚠

Ponding Water

If water stands on your roof more than 48 hours after a rain, the membrane is already degrading. Silicone coatings tolerate ponding, but acrylics will blister and peel.

⚠

Seam Separation

Open laps at membrane seams let water wick under the substrate, rotting the insulation and deck. A coating system can seal these if caught early.

⚠

Blistering or Alligatoring

Surface cracks and blisters mean the top layer has oxidized from San Ramon's hot, dry sun. The coating is losing its protective film and will soon flake off.

⚠

Flashing Pull-Away

When flashing separates from the parapet or curb, rain seeps behind the membrane and erodes the deck. Re-sealing flashing is part of a proper coating job.

⚠

Interior Staining

Brown stains on ceiling tiles or along column lines indicate a slow leak that's already decaying the deck. Coating alone won't fix rot—we'll need to repair the substrate first.

⚠

Foggy Morning Moisture

San Ramon's coastal fog leaves moisture on the roof surface every morning, accelerating corrosion at fasteners and seams. A seamless coating eliminates these entry points.