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Therma-Tru Construction in San Carlos, CA | Ashford Contractors
We provide independent Therma-Tru door installation and repair serving San Carlos, CA, from Fiber-Classic entry systems to Smooth-Star patio doors. Most of our Therma-Tru work here happens on postwar ranch homes and new ADUs where old framing, winter rain, and tight lots create very specific door problems. If your Therma-Tru slab is warped, your multi-point lock won’t engage, or you’re planning a remodel that includes a new entry system, call us at (877) 752-3868 for a straight answer and a free estimate.
Why San Carlos Residents Choose Us for Therma-Tru Service
Therma-Tru doors are built to outlast the framing around them, and that’s the crux of most service calls we run in San Carlos. We’ve pulled plenty of Fiber-Classic slabs off 1950s ranch entries where the door was still straight but the jamb behind it had shifted a half inch. Knowing the difference between a door problem and a framing problem is what keeps a repair from turning into a callback three winters later.
Glen Mossier, our owner, learned framing the hard way: on job sites, not from a catalog. He trained in construction technology at Skyline College in San Bruno and has spent two decades square-checking rough openings before any door, window, or cabinet goes in. When we hang a Therma-Tru unit in San Carlos, the rough opening gets checked, the threshold gets flashed for winter rain, and the reveal gets set so the multi-point hardware actually engages. Build it right the first time, and you won’t be rebuilding it in ten years.
We’re an independent Therma-Tru service provider. We are not authorized, sponsored, or endorsed by Therma-Tru. What we are is local to the mid-Peninsula, and we stock genuine Therma-Tru OEM weatherseal, hinges, glass lites, and multi-point hardware so most San Carlos service calls don’t wait on a freight shipment.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in San Carlos
- Bottom-rail swelling on entry and patio doors. San Carlos winter rain drives against entries on postwar ranch homes, and older flashing details on 1950s and 60s slabs were never designed for modern door systems. When water gets behind the threshold, the fiberglass bottom rail swells and the door starts dragging. We reflash, reset, and replace the sub-sill when the framing’s still sound.
- Fiber-Classic faux-wood finish bubbling and delaminating. South- and west-facing doors in San Carlos get hammered by afternoon sun, and the fiberglass skin on older Fiber-Classic units starts separating after enough UV cycles. Once delamination starts, the slab is done. We replace it with a Smooth-Star or current Fiber-Classic unit rather than trying to patch a failed skin.
- Multi-point lock and deadbolt misalignment. Single-wall postwar framing in 94070 moves. When the jamb shifts even a quarter inch, a Therma-Tru multi-point lock won’t throw cleanly. Sometimes it’s a hinge adjustment; sometimes the whole rough opening needs to be re-squared and re-shimmed. We diagnose which one you actually have.
- Rotted wood sub-sills and thresholds. The Therma-Tru slab holds up, but the framing beneath it rots. We see this constantly on older San Carlos ranch homes where original thresholds sat directly on concrete with no capillary break. The fix means pulling the door, replacing the sub-sill with pressure-treated material, and re-detail flashing so it doesn’t happen again.
- Patio door slab sag on ADUs and additions. New construction on tight San Carlos lots often means a patio door goes where drainage and grading are marginal. If the slab wasn’t pitched right, the door sags and binds within a couple seasons. We fix the slab, adjust the rollers and reveal, and get the door sliding properly.
Therma-Tru Service in San Carlos: What Local Conditions Mean for Your Equipment
San Carlos sits at a point where its postwar housing stock and its current building boom collide. Two-story rebuilds and detached ADUs around downtown and the Holly Street corridor routinely get permitted off narrow lots, and the resulting massing and light/privacy review pushes owners to upgrade entry and patio door systems for better weathersealing and sightlines. That’s a very San Carlos situation. A 1960s ranch on a 6,000 square foot lot was never designed for a second-story addition that changes how water drains around the entry, or a new ADU whose patio door faces the neighbor’s fence six feet away. We account for that in how we flash, how we set the reveal, and how we spec the door glass. On a gut-remodel addition near the Holly Street corridor in 94070, our crew replaced a failing 1990s Fiber-Classic entry door and sidelites whose faux-wood finish had bubbled and whose multi-point lock no longer lined up after the old jamb shifted. We reset the framing, reflashed the threshold for San Carlos winter rain, and installed a new Smooth-Star door with OEM glass and hardware, so the entry sealed tight and the lock engaged smoothly. That’s the difference between swapping a door and getting it right for the house it’s going into.
Therma-Tru Models & Products We Service in San Carlos
We work on the full Therma-Tru lineup: Fiber-Classic and Fiber-Classic Oak entry doors, Smooth-Star fiberglass entry and patio units, Profiles and Traditions steel doors, and Therma-Tru door glass with decorative lite inserts and matching sidelites. When the slab and frame are still sound, we use genuine Therma-Tru OEM replacement glass, hinges, multi-point hardware, and weatherseal. Quality aftermarket thresholds and sills only come into play where OEM isn’t available or the housing detail calls for something the factory doesn’t offer. If the slab is warped, delaminated, or the frame is rotted, we’ll tell you honestly that a full system replacement makes more sense than patching it. We keep common OEM weatherseal profiles, sweep sets, and multi-point components on hand so San Carlos service calls move fast.
See the difference
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AfterTherma-Tru Service Pricing in San Carlos
Therma-Tru service costs vary widely depending on whether we’re adjusting hardware, replacing a slab, or doing a full entry system in a new addition. For San Carlos projects that include door work alongside larger scopes, here’s where the surrounding work typically lands:
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
A standalone Therma-Tru door repair or slab replacement is a different scope, and the best way to get an exact number is a site visit. Our free estimates include a look at the rough opening, the sub-sill condition, and the hardware alignment before we quote. Call (877) 752-3868 to schedule one. No change orders on work we’ve already scoped.
Serving San Carlos, CA — Our Local Coverage Area
We’re based in the San Carlos area and know this community well, including Therma-Tru in Redwood Shores. 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
Yes, and we do it regularly. The typical path is pulling the existing slab, checking the rough opening for square, replacing the sub-sill if it’s rotted, and installing a new Fiber-Classic or Smooth-Star door with matching hardware. Warped slabs can’t be straightened. Call (877) 752-3868 for a quote based on your actual entry condition.
They absolutely do, especially when drainage and flashing weren’t detailed correctly during construction. Rain-driven moisture gets behind the threshold and rots the sub-sill or swells the bottom rail. That’s why we flash every Therma-Tru install for San Carlos winter rain, regardless of what the original house had. If you’re seeing water stains or dragging, call (877) 752-3868 before the framing gets worse.
In 94070, the usual cause is the jamb shifting in postwar single-wall framing. The door slab is still straight, but the rough opening has moved, so the lock points no longer line up with the strikes. Sometimes it’s a hinge and reveal adjustment. Sometimes the rough opening needs to be re-squared. We’ll tell you which one you have after a site visit.
Yes. We use genuine Therma-Tru OEM glass and lite inserts whenever the existing frame and slab are serviceable. For older Fiber-Classic entries where the glass pattern has been discontinued, we’ll match the closest current Therma-Tru lite and work with you on the privacy or decorative effect you’re after.
Yes, that’s a big part of our Therma-Tru work in San Carlos, and we offer Emerald Lake Hills Therma-Tru service as well. We install entry and patio door systems as part of full additions and ADU builds, which means the rough opening, flashing, and hardware all get handled by one crew instead of being handed off to a sub. Call (877) 752-3868 to talk through your project scope and get a free estimate.
Service Areas Near San Carlos
We run Therma-Tru Therma-Tru sales & service calls throughout the mid-Peninsula. Beyond San Carlos, our service coverage includes Foster City, Redwood Shores, Belmont, and San Mateo. We also handle Therma-Tru door work in Therma-Tru service in Highlands-Baywood Park and Therma-Tru service in Redwood City, including homes right over the city line from 94070.
Book Your Therma-Tru Service in San Carlos Today
If your Therma-Tru door is warped, leaking, or the lock won’t engage, call (877) 752-3868. We’ll schedule a site visit, assess the slab and framing, and give you a straight answer on repair versus replacement. Estimates are free, and we won’t sell you a new door if the one you have is worth saving.
Written by Glen Mossier, Owner at Ashford Contractors, serving San Carlos and the mid-Peninsula since 2004.