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Therma-Tru Construction in Pomona, CA | San Bruno Construction
We’re San Bruno Construction, and we install, retrofit, and repair Therma-Tru door systems across Pomona. As an independent contractor (not authorized or endorsed by Therma-Tru), we work on their fiberglass and steel slabs every week, usually on homes where the foundation has shifted or a garage conversion just changed the rough opening. If you need a Therma-Tru door quoted, installed, or fixed in Pomona, call (866) 472-1908 for a free estimate.
Why Pomona Residents Choose Us for Therma-Tru Service
Therma-Tru builds a solid door, but a door is only as good as the opening it sits in. In Pomona, that opening is often out of square because the pier-and-beam foundation under a 1940s bungalow shifted, or because a garage-to-ADU conversion poured a new stem wall that didn’t land exactly where the framer planned. We’ve been setting doors in those conditions long enough to know what a shim pack and a re-squared jamb will fix, and what needs the framing pulled back apart. Noel Carvalho runs our crew, and he grew up watching San Bruno get built out around the Caltrain line, then trained at Skyline College’s construction technology program. He thinks through load paths and rough openings before a single tool comes out of the truck. That’s the mindset we bring to every Therma-Tru install in Pomona.
We’re a full-scope general contractor, so when a Therma-Tru door is part of a larger kitchen remodel or an ADU build, one contract covers the door, the framing, the flashing, the stucco patch, and the final paint. No calling three vendors to find out who left the gap at the sill. We coordinate the trades so you don’t have to.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in Pomona
- Sun-baked warping and delamination on west- and south-facing entries. Pomona summers routinely push past 95°F, and that inland sun cooks the stain and topcoat on Fiber-Classic and Smooth-Star slabs until the fiberglass skin starts lifting at the edges. We see it most on homes in the 91767 and 91768 ZIPs where front doors face the afternoon heat with zero shade. Repainting won’t hold once delamination starts. We’ll tell you straight if replacement is the only real fix.
- Sill and threshold rot after wind-driven rain. Santa Ana events push rain sideways against entry doors, and on raised foundations, the bottom of the door sits right where moisture collects at the stem wall. We replace rotted sills, re-flash the rough opening, and set the new Therma-Tru sill so water sheds away from the house instead of under it.
- Sagging, hinge-bound doors on shifted foundations. Older Pomona homes sit on pier-and-beam or early slab foundations that have moved over decades. When the floor drops an inch, the rough opening racks, and the Therma-Tru hinges take the load. We re-square the opening or re-hang the slab with corrected hinge placement so the door swings clean instead of dragging.
- Weatherstrip, sweep, and seal failure after dust storms. Santa Ana winds push fine dust through worn weatherstripping and dried-out corner seals. The door looks fine, but the air leakage drives up cooling load in a Pomona summer. We replace sweeps and weatherstrip with quality aftermarket parts, not a full door. A $30 seal beats a $1,500 replacement every time.
- Door openings cut into fresh ADU stem walls. On garage conversions where the original 1950s slab had no footing, the re-pour changes the rough opening dimensions mid-project. We re-square and shim those openings, then flash and anchor the Therma-Tru door against the new pour so it seals tight and passes Zone D inspection.
Therma-Tru Service in Pomona: What Local Conditions Mean for Your Equipment
Here’s something a generic Therma-Tru page won’t tell you. The classic Pomona job is a homeowner converting a detached 1950s garage into an ADU, pulling a permit, and discovering the original slab was poured without a proper footing. The city makes them re-pour it, add seismic tie-downs, and then the framer cuts door openings into a brand-new stem wall instead of the original 70-year-old slab. That sequence, which happens constantly in the 91766 and 91767 ZIPs, changes how we set a Therma-Tru entry door. The rough opening is often a half-inch out of square because the new pour didn’t match the framing plan exactly. We re-square, shim, flash against fresh concrete, and add seismic anchoring that meets California Zone D requirements. In a neighboring city with mostly newer slab-on-grade infill, we’d be setting into a stable, decades-old opening. In Pomona, we’re setting into a structure that was just rebuilt from the footing up. That’s the difference, and it’s why a door that “should” install in a day sometimes takes proper framing work first. Good construction doesn’t announce itself; it just works, year after year.
Therma-Tru Models & Products We Service in Pomona
We install and repair the Therma-Tru lines that show up most often in Pomona: Smooth-Star fiberglass entry doors, the Fiber-Classic collection, Classic-Craft series slabs, and Benchmark entry systems with Therma-Tru hinge-and-lock hardware. Our Therma-Tru sales & service approach is simple: use OEM slabs, sills, hinges, and multipoint hardware when the frame is sound, and quality aftermarket weatherstrip and sweeps for wear items. We don’t upsell a full replacement because a corner seal dried out. We do stock common sweeps, thresholds, and hinge sets locally so a repair doesn’t wait on a freight shipment across the country. For Pomona service, that matters when a west-facing Smooth-Star slab needs its delamination assessed the same week the quote is requested.
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AfterTherma-Tru Service Pricing in Pomona
Therma-Tru door work is usually part of a larger project in Pomona, so pricing depends on whether you’re replacing a single entry slab or building an ADU that needs a new door opening cut, flashed, and anchored. Below are the ranges we quote most often for Pomona work. Every estimate is free, written, and line-itemed, so you know exactly what the door, the framing, the flashing, and the permit work cost.
| Project | Pomona Price Range |
|---|---|
| Garage Conversion | $30,000 – $80,000 |
| ADU Construction | $90,000 – $220,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Full Kitchen Remodel | $14,000 – $45,000 |
| Roof Replacement | $8,000 – $20,000 |
What drives the door portion: whether the frame is racked from foundation movement, whether you need seismic anchoring, and whether the slab is delaminating or just weathered. Call (866) 472-1908 and we’ll walk the job with you, no charge.
Serving Pomona, CA — Our Local Coverage Area
We’re based in the Pomona area and also offer La Verne Therma-Tru service, so we 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 Pomona
Yes. We do it regularly on detached garage conversions across Pomona, including ones where the original slab needed a re-pour and a new stem wall went in. We also provide Therma-Tru service in Montclair for similar ADU projects. We re-square the rough opening, flash it against the fresh concrete, and set the Therma-Tru door with Zone D anchoring. It’s part of the same contract, not a separate sub. Call (866) 472-1908 and we’ll pull up Pomona’s current ADU permit requirements for your specific lot.
If the fiberglass skin is delaminating, replacement is almost always the honest call. Heat cycles above 95°F break down the bonding between the skin and the core, and once that starts, sanding and repainting won’t stop it. We’ll assess the slab, show you what’s happening, and price a replacement only if a repair won’t hold. For a Pomona homeowner with a west-facing door, we usually recommend a lighter finish color that doesn’t absorb as much afternoon heat.
The door slab is probably fine. The foundation under the door has shifted, which racks the rough opening and loads the hinges. On pier-and-beam Pomona homes, this is extremely common after decades of seasonal soil movement. We re-hang the slab with corrected hinge placement or re-square the opening, then the door swings clean again.
Yes. Pomona sits in seismic Zone D, and any new door opening on an ADU or garage conversion needs proper anchoring and strapping to pass inspection. We handle it as part of the door installation, not a line item you have to coordinate with someone else.
Absolutely. We run full kitchen and bathroom remodels across Pomona, and exterior doors often tie into those projects when the job moves a wall or adds access to a backyard. Homeowners needing Therma-Tru in Upland get the same single-contract coverage. One contract covers the door, the framed opening, the flashing, and the finish work around it. No separate door vendor.
A garage conversion in Pomona typically lands between $30,000 and $80,000, and an ADU build between $90,000 and $220,000. We also handle Therma-Tru repair in Claremont with the same line-itemed approach. The door itself is usually a small line item inside that scope, but setting it right matters for inspection and weather-tightness. Call (866) 472-1908 for a line-itemed estimate that shows exactly where the Therma-Tru door and labor land.
Service Areas Near Pomona
Based in San Bruno, we serve Pomona and the surrounding area. If you’re nearby, our Pomona service area page covers the details of what we do across the region, including Therma-Tru service in Oak Hills and Therma-Tru service in Spring Valley Lake. We also take jobs in South San Francisco, Millbrae, Brisbane, and Burlingame.
Book Your Therma-Tru Service in Pomona Today
If your Therma-Tru door is dragging, delaminating, or part of a remodel that’s about to start, call (866) 472-1908. We’ll schedule a free estimate, walk the job with you, and give you a written line-item quote. No pressure, no brand badge markup, just straight answers on what the door needs.
Written by Noel Carvalho, Owner at San Bruno Construction, serving Pomona and the surrounding area.