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Therma-Tru Construction in San Francisco, CA | Framework Contractors
We provide independent Therma-Tru installation, repair, and retrofit service across San Francisco, from fog-belt entries in the Sunset to soft-story garage conversions in the Mission. The one thing that makes our Therma-Tru work here different is sequencing: much of it lands inside active seismic retrofits and re-framed pre-1930s openings, not standalone door swaps. Noel Carbajal and our crews have spent years fitting Therma-Tru systems into out-of-square Victorian and Edwardian walls where the rough opening was never plumb to begin with. Call (844) 681-3590 for a free estimate on any Therma-Tru entry or patio door project in San Francisco.
Why San Francisco Residents Choose Us for Therma-Tru Service
We’re an independent Bay Area general contractor, not a dealer showroom and not authorized by Therma-Tru. Our credibility comes from the rough-opening, flashing, and threshold detailing we do on San Francisco’s specific housing stock, not from a manufacturer badge. When you call us about a Therma-Tru door that drags, sticks, or leaks, we’re looking at the wall behind it as much as the slab itself. That matters in a city where most buildings predate 1930 and the framing has shifted for decades.
Noel grew up the kind of kid who spent weekends helping his uncle patch stucco and reroof porches before he was old enough to drive. He later enrolled in the Construction Technology program at Santiago Canyon College, where he learned to read structural drawings and speak the language of framing, concrete, and finish work. That background shapes how we approach every Therma-Tru sales & service job in San Francisco: diagnose the structure first, then the door. Build it right the first time, the second time costs twice as much and nobody’s happy.
We use Therma-Tru OEM hinges, sweeps, and threshold components for direct replacements. Fit and finish tolerances on these slabs are tight, and aftermarket parts that are “close enough” rarely are. Where the OEM part doesn’t solve the site condition, we turn to quality aftermarket weatherstrip and flashing. The goal is a door that closes dead-plumb and seals against fog-belt damp, not one that looks fine and leaks air within two winters.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in San Francisco
Here’s what we actually find on San Francisco door openings, week after week:
- Threshold and sill rot on north- and west-facing entries. San Francisco’s fog belt neighborhoods like the Sunset, Richmond, and Presidio Heights sit in marine damp that never fully dries. The fiberglass slab outlasts its wood threshold and sub-sill by years. We regularly pull a sound Therma-Tru door only to find the sill beneath it is punky and water is wicking into the subfloor.
- Finish chalking and weatherstrip breakdown from salt-laden coastal air. Exposed entries near Ocean Beach or along the Bay take constant salt spray. A slab that still looks sound leaks air and water at the seal within a few years because the weatherstrip has hardened and the finish has chalked away.
- Out-of-square rough openings in pre-1930s stick-frame walls. Victorian and Edwardian framing in San Francisco was rarely plumb when it was built, and a century of settling hasn’t improved it. A Therma-Tru slab that drags or sticks was often hung into an opening that was never square. The door reveals the framing problem rather than causing it.
- Rotted or undersized headers on entries retrofitted into former garage or soft-story walls. We see this constantly in the Mission, Noe Valley, and Bernal Heights, where ground-floor garages got converted to living space decades ago. The door was hung into a converted opening with no proper sub-sill and a header that was never sized for the span.
- Missing flashing at the head and jambs. San Francisco’s damp winters and fog mean any gap in flashing becomes a water path within one season. We find doors with no head flashing at all, or flashing that was installed backward, channeling water behind the siding instead of away from it.
Therma-Tru Service in San Francisco: What Local Conditions Mean for Your Equipment
Here’s the thing most San Francisco homeowners don’t realize until a project is underway: the city’s Soft-Story Retrofit Ordinance means a lot of Therma-Tru entry work lands on the ground-floor garage and soft-story openings of pre-1930s wood-frame buildings, the very walls being re-framed and sheared in a seismic retrofit. Door replacement frequently gets sequenced into a foundation or soft-story permit rather than pulled on its own, because the DBI wants the shear wall detail resolved before the finish door goes in. That’s not true in Oakland or Daly City to the same degree. It’s a San Francisco-specific reality that shapes how we schedule, permit, and price Therma-Tru work here.
On a hillside block in Noe Valley, a rear addition on a lot where the neighbor’s foundation was inches away came with a set of Fiber-Classic entry and patio doors the owner wanted reset after the retrofit. Our crew opened the stucco and found the original header was undersized and the threshold had been sitting right on the slab with no sub-sill. We re-framed the opening, rebuilt the sill and flashing, and reset the doors plumb before the addition closed up. What had read as “the door is dragging” was the wall moving around it.
For San Francisco Therma-Tru owners, that’s the pattern: the door is rarely the root problem. The opening is.
Therma-Tru Models & Products We Service in San Francisco
We work across the Therma-Tru lines most common in San Francisco homes:
- Fiber-Classic entry doors – fiberglass slabs that hold up well in fog-belt damp but depend entirely on proper threshold and sub-sill detailing.
- Smooth-Star entry doors – smooth fiberglass faces that show finish chalking faster on salt-exposed entries.
- Classic-Craft mahogany and oak entry doors – the higher-end wood-grain lines, often found on restored Victorians and Edwardians in Pacific Heights and Noe Valley.
- Therma-Tru patio and sliding glass door systems – common on rear additions and deck transitions, where hillside drainage and flashing are the real variables.
Our parts approach is straightforward: OEM hinges, sweeps, and thresholds for direct replacements because tolerances are tight. Where the OEM part doesn’t match the site condition, we use quality aftermarket weatherstrip and flashing that actually solve the water or air problem. When the slab, glass, and frame are sound, we repair and re-seal. When the threshold, sub-sill, or wall framing behind the door is failing, we re-frame rather than lift a good-looking door onto a bad opening.
See the difference
Before
After
Before
After
Before
AfterTherma-Tru Service Pricing in San Francisco
| Project | Typical San Francisco Range |
|---|---|
| Window Replacement | $5,310 – $17,700 |
| Home Addition | $53,100 – $153,400 |
| Garage Conversion | $35,400 – $94,400 |
A free estimate from us includes opening inspection, a check of the header and sub-sill condition, and a written line-item scope so you know exactly what’s door work versus what’s framing or flashing work. No change orders because the wall wasn’t what we said it was. Call (844) 681-3590 to schedule yours.
Serving San Francisco, CA — Our Local Coverage Area
We’re a San Francisco General Contractor 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 San Francisco
Yes, and this is one of the most common Therma-Tru in Mission District jobs we handle. The work usually gets sequenced into the soft-story retrofit permit so the shear wall detail is resolved before the finish door goes in. Call (844) 681-3590 and we’ll tell you whether your door replacement needs its own permit or can ride on an existing one.
In Noe Valley and across San Francisco, it’s usually the wall. North-facing entries in fog-belt neighborhoods stay damp, the wood threshold and sub-sill rot, and the framing behind the door shifts. The Therma-Tru slab itself rarely fails first. We inspect the opening, not just the door, and the estimate tells you which one is actually the problem.
It depends on whether the opening is being cut or enlarged, and whether it’s part of a larger addition or retrofit permit. If we’re replacing a door in an existing rough opening, it’s usually covered as a like-for-like replacement. If we’re cutting a new opening or changing structural framing, the DBI wants it on a permit. We’ll tell you which applies before any work starts.
The fiberglass slab itself holds up well in San Francisco’s marine climate. What fails faster is the finish, weatherstrip, and any wood threshold or sub-sill. On exposed entries near the coast, expect to re-seal and replace weatherstrip more often than an inland home would. We use OEM weatherstrip and marine-rated flashing details to extend the service life.
Yes, and we do this routinely on Visitacion Valley Therma-Tru service calls and garage conversions. The critical step is checking the header, king studs, and sub-sill in the existing wall before the door goes in. Many converted garage openings were framed with undersized headers decades ago. We fix the framing first, then set the door plumb. Call (844) 681-3590 for a free opening inspection.
Service Areas Near San Francisco
Our Therma-Tru crews serve the full San Francisco service area, including the fog-belt neighborhoods where threshold rot is worst. We also handle Therma-Tru work in Therma-Tru service in Chinatown, where historic district review adds a permitting layer, and across the water in Therma-Tru service in Tiburon for hillside and waterfront entries.
Book Your Therma-Tru Service in San Francisco Today
If your Therma-Tru door is dragging, leaking, or sitting in a wall that’s about to be re-framed for a soft-story retrofit, call (844) 681-3590. One contractor. Every system. We’ll inspect the opening, give you a written line-item estimate, and get the door set plumb on a structure that’s actually sound.
Written by Noel Carbajal, Owner at Framework Contractors, serving San Francisco since 1998.