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Therma-Tru Construction in Encinitas, CA | Mason Remodeling Co San Diego
We’re Mason Remodeling Co San Diego, an independent General Contractor - Encinitas company that installs and services Therma-Tru doors throughout Encinitas. We are not a manufacturer-authorized dealer, and we don’t pretend to be. What we are is the crew that sees what actually happens to Therma-Tru doors after five or ten years of Encinitas salt air, hillside settling, and marine fog, and we know which fixes hold up and which ones don’t. Call (619) 673-9302 for a free estimate.
Our team works on Therma-Tru Classic-Craft, Pulse, Smooth-Star, and Fiber-Classic units from Leucadia to Cardiff-by-the-Sea, and we stock the OEM parts that matter locally: Q-Lon weatherstripping, door sweeps, multi-point lock components, and marine-grade stainless hinge screws. Isaac Pruett, our owner, grew up learning construction the old way, working with his hands before he ever sat in a classroom at Los Angeles Trade-Technical College. For the past several years, he and our crews have worked all across San Diego County, including gut-renovating kitchens near Balboa Park and full bathroom overhauls in homes older than most of our tools. We bring that same straight-talking, no-guesswork approach to every Therma-Tru sales & service call in Encinitas.
Why Encinitas Residents Choose Us for Therma-Tru Service

Here’s the thing about Therma-Tru doors in Encinitas: they’re good doors, but they fail in very predictable ways when you put them on a hillside within sight of the ocean. We know every one of those failure modes, because our crews fix them daily. Salt air corrodes hinge screws and bottom sweeps. Foundation movement on expansive clay soils twists slabs and throws latches out of alignment. Marine fog keeps fiberglass skins damp just long enough to undermine paint adhesion.
The reason homeowners in Encinitas keep calling us back is simple: we default to genuine Therma-Tru replacement parts. Aftermarket hinge screws and off-brand weatherstripping never fit quite right, and a gap of even an eighth of an inch defeats the air-sealing design you paid for. Isaac’s rule on the job site is direct: “Tell me what’s broken. I’ll tell you what it takes.” That’s how we quote, and it’s how we work.
Every technician who arrives at your door is background-checked and identity-verified under the Threshold Standard. You’ll get the crew member’s name and photo before the visit, and a photo ID badge at the door. You get a written price before any work starts. You get a written guarantee stating exactly what’s covered and for how long: 365 days from the completion date, and a free return visit if a repair fails.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Encinitas
- Corroded hinge screws and bottom sweeps. Within three miles of the Encinitas coastline, onshore salt air attacks steel fasteners relentlessly. Factory stainless hinge screws from Therma-Tru are decent, but they don’t always meet the corrosion resistance these coastal conditions demand. We routinely swap them for 316 marine-grade stainless screws. It’s a small change that prevents a sagging door and a stripped hinge plate later.
- Sagging or shifted slabs on hillside homes. Encinitas has expansive clay soils on many slopes, and foundations move. A Therma-Tru slab that once latched cleanly can suddenly bind at the top or leave a gap at the bottom. This isn’t the door’s fault. It’s the house moving underneath it. We re-shim frames with composite shims, install longer hinge screws into the wall framing, and in severe cases recommend a full slab replacement.
- Compressed or torn Q-Lon weatherstripping. The Q-Lon seal on Therma-Tru doors does the heavy lifting for air sealing, but salt air and constant fog cycles dry out the foam core, and the sweep compresses over time. Telltale signs in Encinitas: drafts at the threshold, visible daylight under the door, and in the summer, ants finding their way inside. We stock genuine Q-Lon replacements and install them so the compression is even all the way around.
- Finish delamination and chalky fiberglass skins. UV exposure near the beach is intense, and marine fog keeps surfaces damp. Therma-Tru’s smooth fiberglass skins hold paint well when prepped correctly, but once moisture gets under a failed finish, the surface starts to peel and chalk. We strip, wipe down with a proper solvent, and refinish with a color-stable exterior paint that can handle the Encinitas marine layer.
- Multi-point lock mechanisms gummed up or frozen. Therma-Tru doors with multi-point locking systems collect fine salt grit. The internal linkage and shoot bolts bind. Often a homeowner keeps forcing the handle until something breaks. We can disassemble, clean, and re-lubricate the mechanism, or replace it with a genuine Therma-Tru multi-point lock component before the hardware gets destroyed.
Therma-Tru Service in Encinitas: What Local Conditions Mean for Your Equipment

There’s a specific reason our crews keep a bin of 316 marine-grade stainless hinge screws in every truck that runs Encinitas calls. Coastal building requirements here demand stainless steel fasteners and enhanced corrosion protection for all exterior door hardware within three miles of the coastline. The catch? Therma-Tru’s factory stainless hinge screws, which are a solid general-purpose grade, don’t always satisfy what Encinitas salt air actually does to steel over a decade. We’ve pulled factory screws out of doors along Neptune Avenue that looked like rusted twigs. The heads snap. The threads strip. The door drops. That’s not a manufacturer defect. It’s a coastal reality. Our standard practice for any Therma-Tru hinge, threshold, or sweep install in Encinitas is to upgrade to 316 marine-grade screws, which hold up far longer against the chloride attack that comes from constant fog and salt spray. When we replaced a sagging Therma-Tru Classic-Craft entry door on a hillside home along Neptune Avenue, the original threshold screws and hinge top screws had corroded and snapped. We re-shimmed the frame with composite shims, drove longer 316 stainless screws into the wall framing, and set a new Classic-Craft mahogany-grain unit with fresh Q-Lon weatherstripping. That door still seals tight, even as the home’s settlement continues beneath it.
Hillside construction in Encinitas adds another layer. Many of these homes sit on expansive clay, which swells with winter rain and shrinks in the dry months. A Therma-Tru slab that’s square in August can bind by February. That movement also compresses weatherstripping unevenly and torques hinge plates. If your Therma-Tru door no longer latches, the first question isn’t whether the door is bad. The first question is whether the house moved. We check the frame, the hinge side reveal, and the threshold before we touch a screwdriver. It saves you money, and it saves us from fixing a door that will just shift again.
Therma-Tru Models & Products We Service in Encinitas
We install, service, and repair all four major Therma-Tru lines: Classic-Craft, the wood-grain fiberglass line with the look of mahogany, oak, or fir; Pulse, the contemporary line with clean stiles and modern glass options; Smooth-Star, the smooth-skin fiberglass line that holds a finish beautifully when prepped right; and Fiber-Classic, the value-oriented line that still uses the same Q-Lon weatherseal technology. What we stock locally for fast Encinitas turnaround: genuine Therma-Tru Q-Lon weatherstripping, door sweeps in common widths, hinge screws, and multi-point lock components. When a part is not on the truck, we order OEM and schedule the follow-up fast. We don’t substitute aftermarket door sweeps or knockoff weatherstripping. The fit matters, especially in a coastal climate where air infiltration shows up as a draft and a higher energy bill.
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AfterTherma-Tru Service Pricing in Encinitas

Here’s what a Therma-Tru door project typically costs in Encinitas, using our market-calibrated price ranges:
| Service | Price Range |
|---|---|
| Therma-Tru door slab replacement (labor only, for reference) | $800 – $2,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Repair | $400 – $1,800 |
The labor-only figure for our Bathroom Remodeling in Encinitas covers pulling the old slab, re-shimming the frame, installing the new slab with proper hardware, and setting the weatherstripping. It does not include the cost of the slab itself. What drives the final number? The condition of the existing frame. If the rough opening has settled out of square, or the subfloor has rotted at the threshold, the labor climbs. Coastal homes with salt-damaged door frames often need more prep than a standard in-and-out replacement.
A free estimate from us includes the exact line-item price in writing, with no verbal hand-waving. We’ll tell you what’s repairable and what isn’t. When the cost of parts plus labor exceeds 60% of a new pre-hung unit, we say so plainly and recommend replacement. Call (619) 673-9302 to schedule yours.
Serving Encinitas, CA - Our Local Coverage Area
We’re based in the Encinitas 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 Encinitas
Yes. We service Classic-Craft doors on hillside homes throughout Encinitas, and a door that no longer latches is one of the most common issues we fix. The cause is usually foundation movement from expansive clay soils under the home. We re-shim the frame, adjust or replace the hinges, and reset the strike plate so the door latches again. If the slab itself has twisted beyond adjustment, we’ll recommend replacement. Call (619) 673-9302 for a free quote – we’ll assess what’s happened before we touch a single screw.
Yes. We install genuine Therma-Tru Q-Lon weatherstripping and door sweeps on every coastal home in Encinitas. Aftermarket weatherstripping doesn’t compress evenly, and on a Therma-Tru door, that means drafts, insect intrusion, and a weakened air seal. We order OEM parts whenever possible. The only exception is fasteners: we upgrade to 316 marine-grade stainless hinge screws, which outperform the factory standard in Encinitas salt air.
A new Therma-Tru entry door installation in Encinitas typically falls between $800 and $2,000 for labor alone, with the door slab and hardware priced separately based on the model you choose. A full pre-hung Classic-Craft unit with glass and a multi-point lock will run higher than a basic Smooth-Star replacement. The condition of your existing frame and whether your rough opening has shifted out of square will affect the final number. Call (619) 673-9302 for an exact quote – estimates are free, and we put the price in writing before work starts.
In most cases, swapping a door slab in an existing frame does not require a building permit in Encinitas. Replacing the entire pre-hung unit or enlarging the rough opening usually does, because you’re altering the exterior envelope of the home. Coastal bluff and hillside properties may also trigger additional review. We handle permit pulls and coordinate with the City of Encinitas on every project where a permit is required. No surprises, and no work that shouldn’t have a permit.
Salt air and constant marine fog strip moisture-resistant finishes faster than sun alone. In Encinitas, especially within a mile or two of the coast, fiberglass skins stay damp longer and UV exposure accelerates oxidation. The fix is proper prep before refinishing: stripping, solvent-wiping, and using an exterior-rated acrylic latex that bonds to the skin’s surface. We also check that sprinkler overspray isn’t hitting the door, which is surprisingly common in Encinitas and shortens the finish life significantly. Call (619) 673-9302 if your door’s finish is peeling.
Service Areas Near Encinitas
Our crews work throughout coastal and inland North County San Diego. Along with Therma-Tru service in San Diego, we cover Encinitas, Cardiff-by-the-Sea, Leucadia, and Olivenhain. We also provide Therma-Tru service in Poway for hillside homes facing similar settlement and soil conditions. If you’re in a nearby community on the list, give us a call – we’ll tell you straight whether we can get to you.
Book Your Therma-Tru Service in Encinitas Today
Whether it’s a door that won’t latch, weatherstripping that’s let the drafts in, or a finish that’s peeling from salt air, we’ll give you a written price and a straight answer. Call (619) 673-9302 to schedule your free estimate. A live person answers, every time.
Written by Isaac Pruett, Owner at Mason Remodeling Co San Diego, serving Encinitas since 2004.











