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Therma-Tru Construction in San Carlos, CA | Workshop Contractors
We provide independent Therma-Tru service across San Carlos, CA, for entry doors, patio doors, sidelites, and full entry systems. The work we do here differs from flat-lot door service because San Carlos hillside homes west of Alameda de las Pulgas sit on expansive clay and old fill, which means a Therma-Tru door that rubs, sags, or leaks is usually telling you something about the foundation and drainage, not just the door itself. We diagnose the opening and the envelope first. Call (844) 384-3361 for a free estimate on Therma-Tru repair or replacement anywhere in the 94070 ZIP.
We carry genuine Therma-Tru slabs, sills, sweeps, weatherstrip, and hardware kits, and we re-square rough openings that have moved with the hillside. We’re an independent construction crew, not a Therma-Tru authorized dealer, and we don’t pretend to carry the manufacturer’s warranty. For Therma-Tru work that accounts for what San Carlos clay actually does to a door opening, get in touch with Noel Figueroa and the Workshop Contractors team.
Why San Carlos Residents Choose Us for Therma-Tru Service
We’ve hung, re-squared, and re-sealed hundreds of Therma-Tru entry and patio units across the Peninsula, including plenty in the hillside neighborhoods of San Carlos where the ground moves more than anyone wants to admit. The difference between us and a door-only specialist is that we’re a San Carlos General Contractor. We look at the rough opening, the header, the sill, the flashing, the landing, and the drainage in the same visit. A door that fails on a sloped lot west of Alameda de las Pulgas usually fails because the stoop settled, the grade pitches toward the house, or the rough opening twisted, not because the fiberglass slab gave out. We fix the whole condition, then hang the door.
Noel Figueroa grew up around tradesmen who built half the houses on his street, and he’s spent decades working jobs where the framing, the finish work, and the door all had to line up. That’s the standard we bring to every Therma-Tru sales & service call in San Carlos. Build it right the first time. The second time costs twice as much and nobody’s happy about it.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in San Carlos
- Threshold and sweep seal failure after atmospheric-river rain. On hillside lots west of Alameda de las Pulgas, splashback off hardscape and poor grading drives water under the sill. The bottom rail of the fiberglass slab and the frame’s lower corners pay for it first. We replace the sill, sweep, and weatherstrip, then fix the grade so water stops coming back.
- Out-of-square frames from expansive clay and old fill. Doors that hung clean at install start rubbing the strike jamb and the head as the hillside settles. The glass insert and lock alignment go with them. We re-shim and re-square when possible, and quote a prehung replacement when the rough opening has moved beyond what shims can correct.
- Sun-cracked paint and faded stain on west- and south-facing slabs. San Carlos gets modest rain but strong dry-season UV. Factory finishes that never got a re-coat chalk and peel on the weather side. We strip, prep, and re-coat, or swap in a new genuine Therma-Tru slab when the finish has failed too far to save.
- Hardware and multipoint-lock wear. Sagging hinges, worn weatherstrip, and misaligned deadbolts from years of settling show up as daylight at the corners and a door that won’t latch without a shoulder. We rebuild hinge packs, re-align multipoint lock bars, and replace worn hardware with genuine Therma-Tru kits.
- Rotted sills and compromised rough openings on older downtown bungalows. The early-20th-century homes east of El Camino Real often have original framing that’s been patched, re-flashed, and patched again. We open up the bottom of the opening, assess the header and sill, and replace the rotted structure before setting a new Therma-Tru unit.
Therma-Tru Service in San Carlos: What Local Conditions Mean for Your Equipment
On the hillside streets west of Alameda de las Pulgas, expansive clay and old fill under pier-and-beam and raised entries are the default condition. A fiberglass entry door’s rough opening and threshold are governed by foundation and drainage work rather than by the door itself. Many of the entries we replace in San Carlos went out of square because the stoop or landing settled differently from the main framing. The door didn’t fail. The ground moved under one side of it.
That’s why our Therma-Tru work here starts with a level, a string line, and a straightedge, not a tape measure on the slab. We check the landing for pitch, look for cracking in the stoop, and trace water staining back to its source before we touch a hinge. A door hung on a moving frame will never seal, no matter how good the weatherstrip is. The fix usually involves re-flashing, re-pitching the sill, and sometimes a drainage detail at the landing. In the worst cases it means sistering a header or jacking the entry back into plane. That’s the conversation we have with San Carlos homeowners because it’s the conversation the house is having with us.
Therma-Tru Models & Products We Service in San Carlos
We work on the full Therma-Tru lineup: Smooth-Star fiberglass entry doors, Fiber-Classic and Classic-Craft entry doors, fiberglass patio and sliding glass doors, and complete entry systems with matching sidelites and transoms. When the frame and lock prep are sound, we install genuine Therma-Tru replacement slabs, sills, sweeps, weatherstrip, and hardware kits. Where the OE spec doesn’t suit a slope-exposed or wind-driven-rain opening, we use quality aftermarket sealing and fasteners that perform better in San Carlos conditions. We keep common Therma-Tru weatherstrip profiles, sweeps, and hinge kits on hand for fast turnaround in the 94070 area, and anything we don’t stock we source through our supplier network within a few days.
If the frame, header, or sill is rotted, or the rough opening is out of square enough that re-shimming won’t hold, we’ll tell you straight and quote a prehung replacement instead of patching a door that will keep failing.
See the difference
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AfterTherma-Tru Service Pricing in San Carlos
Most Therma-Tru work we do in San Carlos connects to one of three scopes: a window replacement, a home addition, or our Home Remodeling in San Carlos. The table below shows the price ranges we see for those projects in the 94070 market.
| Service | Typical San Carlos 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 door job here is the condition of the opening. A straight swap on a flat lot east of El Camino Real runs on the lower end. A hillside entry that needs re-shimming, re-flashing, sill replacement, and drainage correction costs more because the labor is real. Your free estimate from Workshop Contractors includes a written line-item scope and a full site check. Call (844) 384-3361 to schedule yours.
Serving San Carlos, CA — Our Local Coverage Area
We’re based in the San Carlos 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 San Carlos
In San Carlos, especially west of Alameda de las Pulgas, it’s usually the house. Expansive clay and old fill settle unevenly, which twists the rough opening and pulls the strike jamb out of plane. The door slab itself may be perfectly fine. We’ll diagnose whether the frame can be re-squared or whether the opening itself needs structural correction before we recommend a repair or replacement. Call (844) 384-3361 for an exact assessment – estimates are free.
A straight door-for-door swap in the same rough opening typically doesn’t require a permit in San Carlos. But if we’re altering the opening, replacing a header, or changing the landing, San Mateo County building code may require a permit, and any significant foundation or drainage work on a hillside lot can trigger a geotech review. We handle the permit process as part of the scope, and we’ll tell you upfront if geotech is needed. Call (844) 384-3361 and we’ll walk you through what applies to your address.
No. The fiberglass slab itself won’t rot. What fails in San Carlos is the sill, the frame’s lower corners, and the weatherstrip, which take the abuse from splashback and poor drainage during atmospheric-river storms. We replace those components with genuine Therma-Tru parts, then correct the grading so the next winter doesn’t repeat the damage.
Yes. Therma-Tru’s lineup is consistent enough that we can match the slab profile, panel configuration, and finish on Smooth-Star, Fiber-Classic, and Classic-Craft units. If the original finish is too far gone to reference, we take a sample from a protected area of the slab or sidelite and match from there. We also check the sidelites and transom so the whole entry reads as one system, not a new door in an old frame.
We handle the flashing, the sill pan, the perimeter sealing, and the drainage at the landing. That’s the part most door-only outfits skip, and it’s the part that determines whether a San Carlos door survives its first winter storm. We’re a general contractor, so the opening, the weatherproofing, and the door are all one scope. Call (844) 384-3361 for a free estimate on the full envelope, not just the slab.
Service Areas Near San Carlos
Workshop Contractors serves San Carlos and the surrounding Peninsula and Bay Area communities. If you’re nearby, we also provide San Carlos service area coverage, Therma-Tru service in Redwood Shores, and Therma-Tru service in Belmont, along with the surrounding neighborhoods along the 101 corridor.
Book Your Therma-Tru Service in San Carlos Today
If your Therma-Tru door is leaking, sagging, or letting daylight through, don’t wait through another winter storm. Call Workshop Contractors at (844) 384-3361 for a free estimate. Noel Figueroa and our crew handle the door, the opening, and the drainage as one scope. One contractor. Every trade.
Written by Noel Figueroa, Owner at Workshop Contractors, serving San Carlos and the broader Peninsula since the company’s founding.