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Therma-Tru Construction in San Diego, CA | Mason Remodeling
We provide independent Therma-Tru door construction, installation, and repair across San Diego County, from entry doors in La Jolla to patio units in Chula Vista. The one thing that makes our Therma-Tru work here different: we build for salt air, not just curb appeal. Call (803) 680-2547 for a free estimate, and we’ll put the price in writing before any work starts.
Why San Diego Residents Choose Us for Therma-Tru Service

Isaac Pruett, our owner, learned to spot a bad door installation before he learned to drive. His dad was a finish carpenter, and Isaac still checks trim work on every project before he considers it done. That’s why our crews know Therma-Tru’s slab construction, rot-resistant cores, and hardware interfaces better than a General Contractor in San Diego ever will. We’re not manufacturer-affiliated, but Therma-Tru is a core part of our exterior remodeling work, and we’ve installed and serviced hundreds of these door systems across San Diego County.
We use OEM Therma-Tru replacement parts, hinges, locks, weatherstripping, and glass panels, whenever they’re available. When a door is older and its original parts are obsolete, we source high-quality aftermarket equivalents and give you an honest repair-versus-replace recommendation based on the door’s structural integrity and your home’s exposure. You’ll know who’s coming, what it costs, and what’s covered before we ever touch your door.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in San Diego
- Corroded hinges and lock sets near the coast. Salt-laden air in beach communities like Pacific Beach and Ocean Beach eats at Therma-Tru hardware faster than anything inland. We regularly replace standard hinges and lock sets with stainless-steel marine-grade components so doors keep latching smoothly year after year.
- Faded, chalky door skins inland. Intense UV exposure in places like El Cajon and Santee breaks down the stained finish on Fiber-Classic fiberglass door skins. We strip, re-stain, and seal with UV-resistant marine-grade finishes that hold up under direct sun.
- Santa Ana wind dust infiltration. Those dry offshore winds drive fine dust into door gaskets and weatherstripping on Smooth-Star doors, causing air leaks and hard latching. We replace compressed weatherstripping and realign strike plates so the door seals tight again.
- Flat, binding patio door rollers. Therma-Tru Pulse patio door rollers flatten and bind after years of expansion-contraction cycles from San Diego’s daily temperature swings. We replace roller assemblies and adjust tracks so the door glides instead of grinding.
- Rotted bottom rails on older entry doors. Sprinkler overspray and coastal fog combine to rot the bottom rail on entry doors, especially on mid-century homes. We replace with rot-resistant composite rails and marine-seal the threshold.
Therma-Tru Service in San Diego: What Local Conditions Mean for Your Equipment
Here’s what a generic Therma-Tru page won’t tell you: San Diego’s coastal zone, within five miles of the ocean, has a marine layer that keeps humidity high and salt deposition constant. That combination accelerates corrosion on door hardware far faster than in the dry inland valleys. A hinge set that lasts fifteen years in Santee might fail in six in Ocean Beach. We see it all the time, and it means we make a judgment call on every coastal job: replace the hardware with stainless-steel marine-grade components, or keep the original finish and accept shorter life. In Mission Hills and Point Loma, where older homes sit right in that salt zone, we almost always recommend marine-grade upgrades. It’s a small line item that saves a second service call two years later.
Therma-Tru Models & Products We Service in San Diego
Our crews service the full Therma-Tru residential lineup. Fiber-Classic Entry Doors, the workhorse of Southern California entryways. Smooth-Star Fiberglass Doors, which we see often in newer developments east of the 15. Pulse Patio Doors, the sliding and hinged patio units that take a beating from sun and salt. And the Benchmark Series, Therma-Tru’s builder-grade line that still benefits from proper sealing and hardware upgrades. For parts, we keep common OEM hinges, lock sets, and weatherstripping in our San Diego stock, which means most repairs don’t wait on a shipment. Older discontinued parts get sourced from trusted aftermarket suppliers, and we always tell you which you’re getting and why.
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AfterTherma-Tru Service Pricing in San Diego

Door construction and replacement pricing in San Diego depends on the unit, the hardware, and your home’s exposure. Here are the line-item ranges we quote from:
| Service | Price Range |
|---|---|
| Window Replacement (per door unit) | $5,310 – $17,700 |
| Impact Window Installation (per door unit) | $9,440 – $29,500 |
Your free estimate includes a full inspection of the existing door, frame, threshold, and hardware, plus a written line-item price. No verbal estimates that grow on the final bill. Call (803) 680-2547 to schedule yours, and we’ll walk you through what we find.
Serving San Diego, CA - Our Local Coverage Area
We’re based in the San Diego 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 Diego
We can usually replace the glass panel itself with an OEM Therma-Tru insert, saving the door slab and your budget. Full replacement only makes sense when the frame or slab has structural damage beyond the glass. We’ll show you the cracked panel, the frame condition, and both prices before you decide. Call (803) 680-2547 for a free in-person assessment.
Coastal salt air shortens the life of hinges, lock sets, and weatherstripping dramatically, even when the fiberglass slab itself holds up well. In beach neighborhoods like Pacific Beach and Ocean Beach, we recommend stainless-steel marine-grade hardware at installation to avoid a second repair inside five years. The slab can last decades with proper sealing.
Yes. If you’re already gutting a kitchen or bath as part of our Bathroom Remodeling in San Diego, replacing an exterior door on the same wall is the smart time to do it. We handle the door construction, flashing, sealing, and trim as part of the larger project scope, which keeps sequencing clean and avoids reopening finished walls later. Ask about bundling it during your free estimate.
For a Therma-Tru Pulse patio door, expect to pay in the window replacement range of $5,310 to $17,700 depending on size, glass package, and hardware upgrades like marine-grade stainless. Impact-rated units run higher, from $9,440 to $29,500. Call (803) 680-2547 and we’ll give you an exact written quote, free.
We bring stain samples to the job and match against your existing door on-site, accounting for sun fading so the new finish doesn’t look off against the old. For Fiber-Classic doors we can replicate the factory stain tones closely, though an exact match on a door that’s been in direct sun for years will look slightly different simply because the old finish has degraded. We’ll show you a test patch before committing.
Service Areas Near San Diego
We serve San Diego County and surrounding areas including Los Angeles, San Jose, San Francisco, and Fresno. If you’re outside the immediate metro, check our San Diego service area page or see Therma-Tru service in San Jose and Therma-Tru service in San Francisco for coverage details. For everything Therma-Tru related, our Therma-Tru sales & service hub has more.
Book Your Therma-Tru Service in San Diego Today
Know who’s coming, know what it costs, know it’s backed up, everything else is just noise. Call (803) 680-2547 now. A live person answers, 24 hours a day, 7 days a week.
Written by Isaac Pruett, Owner at Mason Remodeling, serving San Diego since 2004.











