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Therma-Tru Construction in South San Francisco, CA | Seaside Contractors
We provide independent Therma-Tru door installation and repair across South San Francisco, from the stucco tracts of Baden to the newer infill near El Camino. The thing that separates our Therma-Tru work here is sequencing: we flash and close exterior door openings the same day because a fog-soaked rough opening in this marine layer swells fiberglass frames before the job is done. We’re not factory-authorized, and we don’t claim to be. What we bring is field experience with Therma-Tru’s fiberglass slabs, Tru-Defense frames, and multipoint hardware in South San Francisco’s specific damp, salt-tinged conditions. Call (833) 589-8103 for a free estimate.
Why South San Francisco Residents Choose Us for Therma-Tru Service
Glen Sorrento grew up in Foster City’s Shell Cove, watching lagoon-side homes get built and rebuilt. He studied building construction technology at College of San Mateo, then spent more than two decades working nearly every project type the Peninsula throws at a contractor. That background shapes how we approach Therma-Tru work in South San Francisco: we look at the whole opening, not just the slab. A door that drags in Sunshine Gardens usually isn’t a bad door. It’s a settled rough opening, or a sill pan holding water, or wind-driven rain getting past a poorly flashed Tru-Defense frame. We carry genuine Therma-Tru replacement sills, weatherstripping, sweep gaskets, and multipoint lock hardware, and we’ll tell you straight when a delaminated skin or rotted bottom rail means replacement beats patching. Let’s figure out what the job actually needs – then we’ll talk materials. For broader scope, see our Therma-Tru sales & service page.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in South San Francisco
- Rotted bottom rails and delaminated skins on west-facing doors. Marine-layer damp in the flats keeps stucco walls wet long enough that Therma-Tru sill pans and thresholds trap moisture. We routinely find rotted bottom rails and delaminated fiberglass skins on doors that face west toward the shoreline, especially in Orange Park and Sunshine Gardens.
- Corroded hinges and stiff multipoint locks near the bay. Salt-laden bay air corrodes Therma-Tru hinges, multipoint lock keeps, and exposed screws faster than inland. Finishes pit and door swing gets stiff within a few seasons. We replace with genuine Therma-Tru hardware, not cheap aftermarket substitutes.
- Sticking doors in Baden and Sunshine Gardens. Post-war stucco tracts have settled and racked door frames. A Therma-Tru slab that was square at install drags or gaps at the top corner because the rough opening moved, not the door. We rebuild the opening and re-set the frame.
- Interior drywall staining around Tru-Defense frames. Improper stucco-to-frame flashing on replacement jobs lets wind-driven rain past the frame. You see staining and swollen jamb legs around the door. The fix is re-flashing, not caulk.
- Warped patio door panels from fog exposure. Persistent fog and damp air push moisture into Therma-Tru patio door panels, especially on older units without updated weatherstripping. Panels warp, rollers bind, and the lock stops engaging. We assess whether a panel replacement or full unit swap makes sense.
Therma-Tru Service in South San Francisco: What Local Conditions Mean for Your Equipment
South San Francisco’s grid of post-war stucco tracts sits under SFO approach paths and against a persistent marine layer. That combination changes how exterior door work gets done here. A fog-soaked open rough opening can swell a fiberglass door frame before the install is closed out, so we sequence exterior Therma-Tru replacements weather-tight with flashing done same-day. No overnight openings, no tarp-and-hope. We also account for the FAA story: cranes and rooftop equipment near Baden and the eastern edge can hit SFO airspace height-review triggers that Therma-Tru repair in Daly City or Brisbane jobs never face. For a Therma-Tru patio door replacement, that rarely matters. For a larger addition that includes a new entry system, it can. We know which projects trigger review and which don’t, and we plan accordingly.
Therma-Tru Models & Products We Service in South San Francisco
We work on the full residential Therma-Tru range: Fiber-Classic and Fiber-Classic Collection entry doors, Smooth-Star fiberglass slabs, Classic-Craft and American Style collection doors, and Therma-Tru patio and hinged exterior systems with Tru-Defense frames. Our parts approach is simple. Where the slab and frame are sound, we use genuine Therma-Tru sills, weatherstripping, sweep gaskets, and multipoint lock hardware. Cheap aftermarket sweeps and generic hinges are false economy on fiberglass doors in this salt-air climate. Where the slab is delaminated or the bottom rail is rotted, we say so and recommend a full unit. We stock common Therma-Tru parts locally for faster turnaround across South San Francisco, and special-order less common items without padding the timeline.
See the difference
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AfterTherma-Tru Service Pricing in South San Francisco
Therma-Tru door work in South San Francisco typically falls into these ranges, depending on scope, existing opening condition, and hardware selection:
| Service | Price Range |
|---|---|
| Exterior door replacement (labor and related trim carpentry) | $5,310 – $17,700 |
| Window replacement (adjacent scope on entry wall) | $5,310 – $17,700 |
| Impact window installation (where required near bay exposure) | $9,440 – $29,500 |
What drives cost: whether the rough opening needs rebuilding, whether we’re re-flashing the frame, what hardware you choose, and whether the job triggers any airspace or geotechnical review. A free estimate includes a look at the opening, the flashing, the sill pan, and the existing frame. Call (833) 589-8103 and we’ll give you a written line-item quote, not a ballpark.
Serving South San Francisco, CA — Our Local Coverage Area
We’re based in the Broadmoor Therma-Tru service 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
Yes. The bay air here carries enough salt to pit hinges, corrode multipoint lock keeps, and seize exposed screws within a few seasons, especially on doors facing the water. We recommend stainless or marine-grade hardware upgrades where the exposure is direct, and we stock genuine Therma-Tru replacements for standard setups. Call (833) 589-8103 for an exact assessment and quote – estimates are free.
Usually not. Baden’s post-war stucco tracts have settled and racked over the decades, so the rough opening moves while the Therma-Tru slab stays square. The fix is rebuilding the opening and re-setting the frame, not replacing the door. We’ll confirm on site and tell you honestly which path saves you money.
In nearly all cases, yes. A patio door replacement is ground-level work and doesn’t involve cranes or rooftop equipment, so FAA/SFO height review doesn’t come into play. If your project includes a larger addition or anything that changes roofline height, we’ll check the specific airspace triggers before you commit. Call (833) 589-8103 to discuss your project scope.
Persistent moisture. The marine layer keeps stucco walls damp, water gets trapped behind a poorly lapped sill pan or threshold, and the fiberglass skin eventually separates from the core. West-facing doors in the flats show it first. Once delamination starts, patching is a short-term fix. We’ll tell you when a full unit replacement is the better call.
We close the opening same-day. Flash, set the frame, install the slab, seal the threshold. No overnight openings, because a fog-soaked rough opening swells fiberglass frames before the install is done. On a stucco tract house off Orange Park, our crew pulled a Therma-Tru Fiber-Classic entry that had been dragging for two winters. The bottom rail was rotted and the sill pan held water because the original flashing lapped the wrong way. We rebuilt the rough opening, re-flashed, set a new Smooth-Star slab with a genuine Therma-Tru sill and multipoint lock, and checked swing and seal that same foggy afternoon. Call (833) 589-8103 for a free estimate and we’ll schedule your replacement the same way.
Service Areas Near South San Francisco
Our Therma-Tru work covers all of South San Francisco service area, including 94080 and 94083. We also handle Therma-Tru service in Therma-Tru service in Pacifica and Therma-Tru service in Brisbane, where different fog and wind patterns apply but the same same-day weather-tight sequencing holds.
Book Your Therma-Tru Service in South San Francisco Today
If your entry or patio door is dragging, leaking, or corroding, don’t wait for the marine layer to make it worse. Call (833) 589-8103 for a free estimate. We’ll inspect the opening, give you a written quote, and sequence the work weather-tight around South San Francisco’s fog.
Written by Glen Sorrento, Owner at Seaside Contractors, serving South San Francisco and the Peninsula.