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Therma-Tru Construction in Moss Beach, CA | Gold Star Contractors
We install, repair, and replace Therma-Tru door systems across Moss Beach, CA, from bluff-top homes off Highway 1 to the quieter streets set back from the marine terrace. We’re an independent Therma-Tru specialist, not a factory-authorized dealer, which means we answer to you and the county inspector, not a manufacturer rep. What separates our Therma-Tru work in Moss Beach is that we plan every opening around county permitting, coastal setbacks, and salt-air exposure before the door is ever ordered. Call (833) 382-8544 for a free estimate.

Why Moss Beach Residents Choose Us for Therma-Tru Service
Most door crews in San Mateo County treat a Therma-Tru entry like any other door swap. We don’t, because a door on a Moss Beach bluff doesn’t fail the way a door in San Bruno or Montara fails. The fog, the salt, the wind-driven rain, the county coastal review, they all stack up. We’ve learned to read how a Therma-Tru frame and threshold behave after five or ten years of that exposure. Noel Carranza, our owner and Moss Beach General Contractor, grew up walking Orange County tract-home remodels, and he brings that same eye for how buildings actually go together to every Moss Beach job. When a bottom rail is soft or a threshold is seized with corrosion, we know whether it’s a repair or a replacement before we touch a tool.
We carry and order OEM Therma-Tru hinge sets, sweeps, thresholds, and glazing rather than generic aftermarket parts. The door and frame are engineered as one system, and cheap sweeps fail fast in coastal air. For Moss Beach homeowners, that matters more than it does inland.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Moss Beach
- Rotted and delaminating bottom rails. Wind-driven rain and fog condensation wick into the sill on bluff-exposed entries. We see Fiber-Classic slabs where the bottom rail has gone soft while the rest of the slab still looks fine. On a near-bluff lot, that rot often spreads faster than you’d expect because the door never fully dries between fog cycles.
- Corroded hinges, locksets, and threshold hardware. Salt-laden onshore air eats plated steel hardware years ahead of inland service life. We’ve pulled hinge screws from Moss Beach doors that crumble at the threads. Stainless and marine-grade replacement hardware is not an upsell here; it’s the minimum that survives.
- Faded, chalked, or pitted fiberglass skins. West-facing doors on Moss Beach take storm surf and salt spray directly. The gel coat on a Fiber-Classic or Smooth-Star slab can chalk and pit within a few seasons. Sometimes refinishing works. Sometimes the skin is too far gone and the slab gets replaced.
- Failed weatherstripping and door sweeps. Fog moisture and wind-driven rain infiltrate around the slab and sidelites once the original sweeps compress or tear. In Moss Beach, a leaking sweep isn’t a comfort issue. It feeds the rot cycle at the threshold and can stain interior flooring on a slab-on-grade cottage.
- Sidelite and glazing seal failure. Coastal temperature swings and salt residue break down glazing seals. Once a sidelite fogs between the panes, the seal is done. We reglaze with Therma-Tru-spec glass and reset the frame sealing so the opening sheds water the way it should.
Therma-Tru Service in Moss Beach: What Local Conditions Mean for Your Equipment
Moss Beach is unincorporated San Mateo County, so an exterior door swap or a door added during a remodel runs through county building permits and Coastal Act/Coastal Commission review rather than a city building department. That’s not a formality. Near-bluff lots often trigger bluff setbacks and geotechnical input that a Half Moon Bay Therma-Tru service or Pacifica job doesn’t face the same way. In practical terms, a Therma-Tru entry on a near-bluff street can require coastal-development review before the door is even ordered. We’ve worked that sequence on a bluff-top street off Highway 1, where a rotted Fiber-Classic entry in a mid-century cabin needed the opening detail coordinated with the county permit and bluff-setback review already underway for drainage work. The door was the easy part. The permitting path was the job. If you’re planning a Therma-Tru replacement or adding a door as part of a larger remodel, start that conversation early.
Therma-Tru Models & Products We Service in Moss Beach
We service the full Therma-Tru lineup that shows up in Moss Beach homes: Fiber-Classic fiberglass entry doors, Smooth-Star fiberglass doors, Classic-Craft fiberglass entry doors, and Fiber-Classic patio and French door systems. Most of the doors we touch on the coast are Fiber-Classic or Smooth-Star, but we work on Classic-Craft when a homeowner wants a wood-grain look that stands up to fog better than actual wood. For parts, we lean on OEM Therma-Tru hinge sets, sweeps, thresholds, and glazing because the frame and door are engineered as a system. Aftermarket sweeps tend to fail faster in salt air, and we’d rather install the part once. When the slab and frame are still sound, we repair and re-seal rather than push a full replacement. But a rotted bottom rail or delaminated skin near a bluff-top threshold usually means replacement. Patching buys months, not years.
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AfterTherma-Tru Service Pricing in Moss Beach
Therma-Tru work in Moss Beach spans a wide range because the job might be a single entry door repair or a full home addition that includes new exterior openings. Here are the ranges we work within:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Home Addition | $45,000 – $130,000 |
| Roof Repair | $400 – $1,800 |
What drives the cost on a Therma-Tru entry specifically is whether the slab is salvageable, whether the frame needs rebuilding, and whether the opening triggers coastal review. A straight slab swap with new OEM hardware is at the lower end. A full frame replacement with sill pan rebuild and flashing tied into weather-resistive barrier work runs higher. Our estimates are free and written line by line. Call (833) 382-8544 and we’ll walk the opening with you.
Serving Moss Beach, CA — Our Local Coverage Area
We’re based in the Moss Beach area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Moss Beach
Yes, in most cases. Moss Beach is unincorporated San Mateo County, so exterior door replacements run through county building permits, and near-bluff lots often require Coastal Act or Coastal Commission review. We handle the permit path as part of the job. Call (833) 382-8544 and we’ll tell you exactly what your specific lot triggers.
Fog condensation and wind-driven rain wick into the sill, and the bottom rail never fully dries in the coastal marine climate. Salt in the moisture accelerates the breakdown. We rebuild sill pans and flashing drains so the replacement slab sheds water instead of sitting in it.
Yes. We size Therma-Tru Fiber-Classic and Smooth-Star slabs to existing openings and match trim profiles to the cottage’s character. The existing rough opening on older Moss Beach cabins is rarely square, so we plane and shim the frame to suit instead of forcing the door into a bad fit.
Marine-grade stainless hinges, locksets, and threshold hardware. Standard plated steel fails quickly in Moss Beach’s onshore air. We specify stainless or coated marine hardware on every coastal Therma-Tru install, and we can source OEM hinge sets so the geometry stays correct. Call (833) 382-8544 for a hardware quote.
It can, especially if the door is part of a larger remodel or addition on a near-bluff or bluff-top lot. Coastal setbacks, slope stability, and drainage all come up in unincorporated San Mateo County. We coordinate the door opening with whatever geotechnical or drainage work the county requires. Estimates are free, so call (833) 382-8544 to find out what your project will actually involve.
Service Areas Near Moss Beach
We serve Moss Beach and the surrounding San Mateo County coast, including Therma-Tru service in Montara just north along Highway 1, and Therma-Tru service in San Bruno over the hill. Homeowners in Half Moon Bay, El Granada, and Pacifica also call us when they want a door crew that understands coastal permitting and salt-air detailing. For a full look at our coverage, see the Moss Beach service area page, and for more on the product line itself, visit our Therma-Tru sales & service overview.
Book Your Therma-Tru Service in Moss Beach Today
If your Therma-Tru entry is showing salt-air wear or you’re planning a remodel that needs new exterior openings, call (833) 382-8544. We’ll schedule a free estimate, walk the opening, and give you a written quote that covers the door, the hardware, and the permit path. One call, done right, that’s the only way we know how to run a job.
Written by Noel Carranza, Owner at Gold Star Contractors, serving Moss Beach and the San Mateo County coast.