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Therma-Tru Construction in South San Francisco, CA | Framework Contractors
We install and repair Therma-Tru entry, patio, and sidelite systems across South San Francisco’s fog-belt housing stock and offer Therma-Tru in San Bruno as well. Framework Contractors is an independent contractor, not a Therma-Tru dealer or authorized service center. The difference here: we know how fiberglass door skins chalk on bay-facing bungalows and how hillside runoff eats thresholds on Sign Hill. Call (844) 681-3590 for a free estimate on any Therma-Tru project.
Why South San Francisco Residents Choose Us for Therma-Tru Service
Noel Carbajal started patching stucco and reroofing porches before he could legally drive, working weekends with his uncle across Orange County. That’s three decades of framing, finish work, and jobsite problem-solving behind every door we hang. In South San Francisco, we bring the same approach: verify the rough opening, check the drainage path, then order the right Therma-Tru unit. We’re an independent contractor, not a manufacturer affiliate, which means we recommend what works for your slab and your exposure, not what moves inventory. We install and retrofit Fiber-Classic, Smooth-Star, Classic-Craft, and Therma-Tru patio sliders, and we stock OEM sills, sweeps, and weatherstrip for faster turnarounds in the 94080 and 94083 ZIP codes, with Therma-Tru repair in Daly City also available. Build it right the first time, the second time costs twice as much and nobody’s happy.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in South San Francisco
- Chalking and peeling finishes on west- and bay-facing entries. Persistent marine fog keeps door skins damp for months at a stretch. The gelcoat breaks down, pigments oxidize, and the door face turns chalky. We strip, prep, and refinish when the skin is sound, and replace the unit when it’s not.
- Rot and delamination at the bottom rail. Flatlands stucco homes built lot-line to lot-line often have slabs that pitch toward the house. Splashback and poor drainage trap moisture against the threshold, and the bottom rail delaminates. We see this constantly around Grand Avenue and the original South City core.
- Worn sweeps and corroded sills on hillside entries. Around Sign Hill and the west side, runoff from sloped lots and retaining walls channels water straight at the door base. The sweep fails, the sill corrodes, and water gets under the door. Replacing the sweep with OEM parts and reflashing the sill fixes it before subfloor damage spreads.
- Sagging and dragging slabs on mid-century ranch homes. Original rough openings were sized for older wood doors. Decades of settling leave headers out of square. A new door that dragged in June and latched in December is usually a rough opening problem, not a hinge problem.
- Fogged and failed Therma-Tru patio sliders. Cool damp air off San Bruno Mountain stresses seals on sliding glass door systems. We replace weatherstripping, realign rollers, and when the insulated glass unit fails, we swap the door or the panel with a Therma-Tru unit sized to the existing opening.
Therma-Tru Service in South San Francisco: What Local Conditions Mean for Your Equipment
South San Francisco’s flatlands were built lot-line to lot-line in the mid-century. That’s not a trivia point. It means an exterior door or window change that alters the opening frequently collides with tight side-yard setbacks and old, sometimes undocumented framing. Before we order any Therma-Tru unit, we verify the rough opening and the property line. We’ve pulled doors off Grand Avenue bungalows and found headers sistered in ways no permit would pass today. Hillside lots on Sign Hill add another layer: sloped grade means the door base sits lower than the surrounding soil on at least one side, so water wants to run toward the threshold, not away from it. For nearby hillside properties, we also provide Broadmoor Therma-Tru service. On a 1940s single-story stucco bungalow off Grand Avenue, our crew found the original Fiber-Classic entry door delaminating at the bottom rail and the threshold rusted through, with the finish chalked from years of fog off San Bruno Mountain. We pulled the unit, found the rough opening out of square and the sill sitting below the stoop, and rebuilt the threshold with a new OEM sill and proper flashing before hanging a fresh Fiber-Classic door. The side-yard entry now sheds water instead of trapping it, and the door swings clean without dragging. That’s the kind of fix a generic Therma-Tru page won’t tell you about, because it only shows up when you work in this fog belt long enough.
Therma-Tru Models & Products We Service in South San Francisco
We work on the full residential Therma-Tru line: Fiber-Classic fiberglass entry doors, Smooth-Star smooth fiberglass doors, Classic-Craft premium entry doors with woodgrain detail, and Therma-Tru patio and sliding glass door systems. For repairs, we use Therma-Tru OEM sills, sweeps, weatherstrip, and hinge hardware where the frame is sound, because aftermarket seals rarely match the door’s drainage profile in fog-belt conditions. When we find rot in the bottom rail, delaminated skins, or a rough opening that has moved, we tell you straight: a full unit replacement beats patching a door that will leak again next winter. We’re an independent Therma-Tru service provider, and we also handle Therma-Tru sales & service as part of our broader exterior renovation scope.
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AfterTherma-Tru Service Pricing in South San Francisco
Therma-Tru door and window work in South San Francisco falls into the same cost bands we use across the region. Here are the relevant line items:
| Service | Typical Range |
|---|---|
| Window Replacement | $5,310 – $17,700 |
| Impact Window Installation | $9,440 – $29,500 |
| Roof Repair | $470 – $2,125 |
What drives the cost on a Therma-Tru entry door in South San Francisco specifically is the rough opening condition. If the header is out of square or the sill sits below grade, the labor goes up, and so does the material list. Our free estimate includes an opening inspection, drainage check, and a written line-item quote, so you know the number before any work starts. Call (844) 681-3590 to schedule yours.
Serving South San Francisco, CA — Our Local Coverage Area
We’re a South San Francisco General Contractor based in the 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 South San Francisco
The marine fog off the bay and San Bruno Mountain keeps the door skin damp for weeks at a time, which breaks down the finish faster than sun exposure ever would. We address it by stripping the deteriorated finish and applying a marine-grade coating, or by replacing the door with a new Therma-Tru unit if the skin has delaminated. Call (844) 681-3590 and we’ll tell you which one your door needs.
Usually not. What you’re describing is a rough opening that has settled, which is common on mid-century South San Francisco homes where original headers were sized for older wood doors. The door swells slightly with humidity, and the shifted frame catches it. We realign or rebuild the opening, and the dragging stops. Call (844) 681-3590 for an inspection.
If the bottom rail has delaminated or the sill is corroded through, patching it rarely holds in fog-belt conditions. The moisture path is already established, and a repaired door will leak again. We replace the full unit with a new Therma-Tru door and a properly flashed OEM sill. Call (844) 681-3590 for a free assessment.
Yes, if the opening size changes, South San Francisco building code requires a permit, and that’s true whether you’re on a flatlands lot or a hillside parcel on Sign Hill. We pull permits and handle inspections as part of the job. Call (844) 681-3590 and we’ll walk you through what the city will ask for.
Sloped grade means water runs toward the threshold on at least one side, so the sill, flashing, and drainage correction matter more than the door itself. We grade the landing, install the OEM sill with proper weep drainage, and often add a small swale or channel to direct runoff away from the door base. Call (844) 681-3590 for a site evaluation.
Service Areas Near South San Francisco
We serve South San Francisco and surrounding communities across the Peninsula and the broader Bay Area. Our Therma-Tru installation and repair work extends to South San Francisco service area neighborhoods and into nearby cities, including Therma-Tru service in Brisbane just north of Sign Hill, and Therma-Tru service in Pacifica over the coastal ridge. We also cover Daly City, San Bruno, and Millbrae for exterior door and window work.
Book Your Therma-Tru Service in South San Francisco Today
If your Therma-Tru door is chalking, dragging, or leaking at the threshold, don’t wait for the next wet winter. Call (844) 681-3590 to schedule your free estimate. We’ll inspect the opening, check the drainage, and give you a written quote. We’re an independent Therma-Tru service provider serving South San Francisco from the flatlands to the hills.
Written by Noel Carbajal, Owner at Framework Contractors, serving South San Francisco and the Peninsula since 1996.