Manufacturers
Roofing is sold by brand and installed as a system. We standardize on three manufacturer lines so every component on your roof is designed to work with the one next to it — and so a warranty is something you can actually claim.
A shingle from one company over underlayment from another, capped with a third company’s ridge vent, is a roof nobody warranties as a whole. Manufacturer systems exist because those parts are tested together.
Familiarity with one set of components means fewer installation surprises, consistent details across projects, and a crew that knows the published instructions rather than guessing at them.
One system, one set of instructions, one warranty path — and a roof that can be serviced years from now with the parts it was built from.
GAF
A complete, manufacturer-matched steep-slope system — shingle to ridge vent.
TRI-BUILT
The accessory layer behind the roof: underlayments, edge metal, fasteners, ventilation.
Westlake Royal Roofing Solutions
Stone-coated steel in shake, shingle, and Spanish tile profiles.
Coverage
A quick map from roof system to the brand and product line we specify for it.
| Roof system | Manufacturer | Details |
|---|---|---|
| Asphalt shingle roofs | GAF Timberline HDZ | Learn more |
| Deck protection and underlayment | GAF Deck-Armor, FeltBuster | Learn more |
| Leak barrier and detail membranes | GAF WeatherWatch, TRI-BUILT self-adhered | Learn more |
| Edge metal, ventilation, fasteners | TRI-BUILT | Learn more |
| Low-slope TPO and PVC | GAF EverGuard | Learn more |
| Modified bitumen | GAF Ruberoid / Liberty | Learn more |
| Stone coated steel | Westlake Royal Unified Steel | Learn more |
| Roof-integrated solar | GAF Energy Timberline Solar | Learn more |
Get Started
Ask us what we would specify on your roof, and why — including the parts that are not visible once the job is done.
Service Areas
We provide roofing & waterproofing for residential and commercial properties in every city and community across San Francisco and the Peninsula south to Hillsdale in San Mateo. Select your area for local building conditions, exposure, and details.
Not sure whether we cover your address? View all service areas or contact us to confirm.
