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Therma-Tru Construction in Pacifica, CA | Daly City Construction
We provide independent Therma-Tru door installation, repair, and replacement across Pacifica’s fog-belt hillsides and bluff-edge lots. The thing that makes our Therma-Tru work different here is simple: we understand what salt air, wind-driven rain, and marine-layer humidity actually do to fiberglass and steel entry doors over time. If your Therma-Tru door is sticking, rusting at the bottom rail, or letting water in during winter storms, call us at (866) 505-5254. We’ll diagnose it straight and tell you whether it’s a fix or a replace.

Why Pacifica Residents Choose Us for Therma-Tru Service
Noel Cabrera, our owner, grew up in the Westlake district of Daly City, where postwar tract homes fight the same coastal fog Pacifica gets every summer. He trained in construction technology at City College of San Francisco before spending years on residential jobs across San Mateo County, including Therma-Tru service in South San Francisco, and he’s pulled more fog-rotted door frames off Pacifica homes than he cares to count. Our crew has installed and serviced Therma-Tru door systems across Pacifica for years. We know the brand’s hardware, sill systems, and finish schedules well enough to catch failures other contractors walk right past.
We’re an independent Therma-Tru sales & service provider. We are not manufacturer-affiliated or authorized. That matters because it means we diagnose honestly: when a door frame is solid and an OEM sill or hinge rebuild will buy another decade, we say so. When the core is compromised and replacement is the only real answer, we say that too.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Pacifica
- Chalky, oxidized fiberglass door skins. Pacifica’s salt-laden fog settles into the gel coat on Fiber-Classic and Smooth-Star doors, especially on south- and west-facing entries that get afternoon sun. The surface turns cloudy, then hairline cracks appear. It’s repairable if caught before the fiberglass underneath starts wicking moisture.
- Rust-through at the bottom rail on steel Therma-Tru doors. Homes built in the 1990s and early 2000s often have steel Therma-Tru slabs. Fog moisture wicks into the cut edges and factory paint breaks down at the bottom rail and hinge-side jamb. By the time you see rust bubbles, the rail is usually compromised.
- Adjustable sill and sweep systems losing their seal. Pacifica’s atmospheric-river storms drive rain sideways. If the threshold has corroded or the slab has sagged on a settling hillside foundation, the sweep no longer compresses and water reaches interior floors. We rebuild these with OEM sills and sweeps when the frame is sound.
- Finish blistering on woodgrain-textured fiberglass doors. The embossed grain pattern on Classic-Craft doors traps moisture. On Linda Mar and Esplanade homes, salt air accelerates this into delamination that looks like rot. It isn’t rot, but it needs the old finish stripped and a marine-grade coating applied.
- Sticking and swelling in winter. Fiberglass door slabs expand and contract with temperature swings. Pacifica’s wet winters combined with older out-of-square frames on mid-century homes make doors bind at the latch side. Sometimes it’s a hinge adjustment. Sometimes the frame has moved and needs real shimming.
Therma-Tru Service in Pacifica: What Local Conditions Mean for Your Equipment
Here’s something Pacifica homeowners face that nobody in Daly City or Millbrae deals with: geotechnical review and Coastal Commission permitting on bluff-edge lots. Along the Esplanade and lower Linda Mar, even a simple Therma-Tru in Colma or local entry door replacement can trigger a paper trail asking for geotech sign-off before work starts. The city wants to know that the door opening isn’t part of a larger structural issue on a slumping lot. We’ve walked enough Pacifica homeowners through that process to know which questions get asked first and what documentation speeds things along. If your home sits near the bluff edge, mention that when you call so we can tell you what to expect before the first screw comes out.
Therma-Tru Models & Products We Service in Pacifica
We work on the full Therma-Tru residential lineup you find on Pacifica homes: Fiber-Classic smooth and woodgrain fiberglass entry doors, Smooth-Star fiberglass doors, Classic-Craft American Style collection doors, and the builder-grade Benchmark line common on 1990s and 2000s-era houses, plus Therma-Tru service in Broadmoor. For parts, we source OEM Therma-Tru sills, sweeps, hinges, and glass cassettes whenever the frame and slab are structurally sound. When OEM components are backordered or the cost doesn’t make sense for a small weatherstripping fix, we use proven aftermarket options and tell you exactly what we’re installing and why. Most common sill and sweep parts are available for fast Pacifica turnaround without waiting weeks.
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AfterTherma-Tru Service Pricing in Pacifica
What you’ll spend depends on whether we’re repairing hardware and seals or replacing the door entirely. Here are the project ranges we quote most often for Pacifica homes:
| Service | Typical Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Repair | $400 – $1,800 |
For a Therma-Tru door hinge and sill rebuild on a solid frame, you’re usually looking at a $400 – $900 parts-and-labor range. Full door replacement runs higher and depends on the model line, glass package, and whether the jamb needs rebuilding. Our free estimate includes a straight answer on repair versus replace, a written line-item scope, and no pressure to upsell. Call (866) 505-5254 to schedule yours.
Serving Pacifica, CA — Our Local Coverage Area
We’re based in the Pacifica area and know this community well, and we also handle Therma-Tru repair in San Bruno. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Pacifica
Can you replace just the Therma-Tru door slab and keep the existing frame?
Yes, when the frame is square, the jamb isn’t rotted, and the threshold is intact. We’ve done this on plenty of Pacifica homes where the slab failed but the frame had years left. If the frame has shifted from hillside settlement, a slab-only swap won’t seal properly and we’ll tell you that before quoting the work. Call (866) 505-5254 for a free assessment.

My Therma-Tru fiberglass door looks chalky and has hairline cracks. Is that repairable?
Usually, yes. This is oxidation in the gel coat from Pacifica’s salt fog and UV exposure. We strip the failed finish, repair the surface cracks, and recoat with a marine-grade finish designed for coastal conditions. The repair works best before moisture has penetrated into the fiberglass substrate. Call (866) 505-5254 and we’ll take a look.
Why do my Therma-Tru doors swell and stick only in winter?
Winter is when Pacifica gets real rain and temperature swings, and both materials and framing respond. Fiberglass absorbs minimal moisture but the wood frame behind it can swell, and cold weather contracts the slab slightly. On 1940s – 1970s split-level homes with original framing, the opening has usually shifted out of square over decades. The fix might be as simple as hinge adjustment or as involved as re-shimming the jamb. Call (866) 505-5254 and describe what you’re seeing.
Do I need a Coastal Commission permit to replace an exterior door in Pacifica?
Not always, but on bluff-edge lots in Linda Mar and along the Esplanade, yes, it’s a real possibility. The Coastal Commission and Pacifica’s building department sometimes require geotechnical review before exterior door or window replacements on those lots. We’ll help you figure out what applies to your property before any work is scheduled.
What Therma-Tru door finish holds up best to Pacifica’s fog and salt air?
A factory-applied finish on a fiberglass slab generally outperforms site-painted steel over time, and darker colors on south- and west-facing Pacifica entries show sun damage faster. For fog-heavy zones, we recommend lighter finishes and regular cleaning to keep salt deposits from etching the surface. Call (866) 505-5254 for a finish recommendation specific to your door and exposure.
Service Areas Near Pacifica
We serve all of Pacifica, including the 94044 ZIP. Our crews also work regularly in Daly City, Broadmoor, Colma, and Brisbane. For customers in the northern part of the county, we also provide Therma-Tru service in Chinatown and Therma-Tru service in Millbrae. If you’re in a neighboring community and need Therma-Tru work done, call us and we’ll tell you straight whether we cover your street.
Book Your Therma-Tru Service in Pacifica Today
Tell me what the house needs, not what you think it needs, and we’ll figure out the right fix. Call (866) 505-5254 to schedule your free Therma-Tru estimate in Pacifica. We’ll show up, look at the door, and give you a straight answer.
Written by Noel Cabrera, Owner at Daly City Construction, serving Pacifica and the broader Pacifica service area with honest, hands-on renovation work.