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Therma-Tru Construction in Keller, TX | Sawyer Remodel Fort Worth
Therma-Tru construction service in Keller usually runs $600 to $8,500 depending on whether you need a threshold sealed, a frame rebuilt, or custom glass installed. Our crews have worked on Therma-Tru door systems across Keller since the early 2000s, from fiberglass entry doors on 80s-era slab homes to modern Classic-Craft installations in new luxury builds. What sets our approach apart is that we fix the entire opening, not just the slab, because Keller’s clay soils move doors in ways a handyman patch won’t hold. Call (682) 841-6652 for a written estimate before any work starts.
Why Keller Residents Choose Us for Therma-Tru Service

We’re an independent Therma-Tru service provider, not manufacturer-affiliated. That means we recommend what actually holds up in Keller’s climate, not what a corporate catalog says should work. Luca Romano, owner at Sawyer Remodel Fort Worth, learned the trade hands-on at Los Angeles Trade-Technical College and has spent two decades swinging hammers on everything from tract homes to custom builds. He still does walkthroughs himself because he’s seen too many remodels go sideways when the owner stops showing up.
Every job runs under The Relay Visibility Guarantee: a written price before work starts, live arrival time tracking, and before-and-after photo updates. Our technicians are background-checked and uniformed. You’ll know exactly who’s walking into your home before they arrive. And our Therma-Tru sales & service work carries the 365-Day Done Right Promise, so if a frame settles again within a year, we come back and make it right.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Keller
- Frame racking from slab movement. Keller sits on expansive clay that shrinks in summer and swells after rain. When the slab under your entry heaves or settles, the Therma-Tru frame twists with it. The door starts binding at the latch or catching at the top corner. We re-set the frame with composite shims after the slab has been stabilized, or rebuild the opening with a floating jamb system if the movement is seasonal and ongoing.
- Weatherseal compression and threshold leaks. Homes built in the 1980s and 1990s across Keller often still have their original aluminum or wood thresholds. After a heavy downpour, water finds its way under the sill and into the entry hall. We replace the threshold with an adjustable Therma-Tru unit and seal the exterior with polyurethane joint filler so the next storm doesn’t soak your subfloor.
- Surface cracking on older Smooth-Star doors. A Smooth-Star fiberglass skin takes a beating under full west sun and hail impact. We see hairline cracks and delamination on doors that face Keller’s afternoon sun without porch cover. If the skin hasn’t separated, we repair and refinish. If the panel is compromised, we’ll tell you honestly that a new prehung unit costs less long-term than repeated patches.
- Warped jambs from humidity swings. Unconditioned entry halls in Keller get hot and humid in summer, then dry and cold in winter. That cycle twists wood jambs and throws hinge alignment out. We rebuild the jamb, re-hang the door, and adjust the hinges so the reveal stays even through every season.
- Hinge screw shear from repeated stress. When a slab moves a quarter to half an inch seasonally, the hinge screws take the brunt. We regularly find screws sheared off inside the jamb. The fix isn’t just longer screws, although that helps. It’s re-setting the frame so the door isn’t fighting the foundation every time you open it.
Therma-Tru Service in Keller: What Local Conditions Mean for Your Equipment

Keller sits on a patchwork of Houston Black and Heiden clay, and many 1980s and 1990s neighborhoods like Hidden Lakes and Marshall Ridge were built before post-2000 foundation standards required interior steel reinforcement. What that means for your Therma-Tru door is concrete: frames on original slabs here move 1/4 to 1/2 inch seasonally, enough to shear hinge screws and crack fiberglass corners. A door that latched fine in June might not close by October. The only fix that lasts is re-setting the frame with shims after the slab has been stabilized, or rebuilding the opening with a floating jamb system that lets the frame move independently of the foundation. Few handymen in Keller know to do that. Our crew does it regularly, and our Keller service area coverage means we’re familiar with how specific neighborhoods behave, not just the city in general.
We had a tech called to a home on Bear Creek Parkway in Hidden Lakes where a Classic-Craft six-panel door wouldn’t latch after a dry summer followed by heavy October rains. The slab had dropped 3/8 inch at the strike jamb, leaving a visible gap at the threshold. We pulled the interior trim, shimmed the jamb leg with composite wedges and installed an adjustable Therma-Tru threshold, then sealed the exterior. Six months later the door still closes with one finger and no daylight shows at the sill. The work talks. We just back it up.
Therma-Tru Models & Products We Service in Keller
We work on the full Therma-Tru range that shows up in Keller homes. Classic-Craft Mahogany Collection and Fiber-Classic Oak Collection fiberglass entry doors, Smooth-Star doors from the 1990s and 2000s, and Pulse Series entry doors on newer builds. When parts are still in production, we use genuine Therma-Tru sills, weatherstripping, and adjustable hinges. For obsolete pieces like mid-2000s low-profile thresholds, we source quality aftermarket replacements or fabricate matching profiles in our shop. Our honest repair-vs-replace stance means we rebuild frames and reseal when the slab is intact and the door skin hasn’t delaminated. When the threshold has leaked repeatedly or the panel is compromised, a new prehung unit costs less long-term and we’ll tell you that before you spend money on a patch.
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AfterTherma-Tru Service Pricing in Keller

Here’s what Therma-Tru work in Keller typically runs. These are the numbers we quote, and the written estimate you get before any work starts won’t change at the door.
| Service | Price Range |
|---|---|
| Threshold replacement and exterior sealing | $600 – $1,600 |
| Full frame reconstruction and door re-hanging | $1,200 – $3,800 |
| Custom glass insert and sidelight installation (Classic-Craft) | $2,800 – $8,500 |
Cost depends on whether we’re fixing a slab that’s still moving or a frame that just needs re-setting, whether the glass is a standard insert or a custom side-light layout, and what condition the rough opening is in once we pull the trim. Every estimate includes a written line-item breakdown and our 365-Day Done Right Promise. Call (682) 841-6652 for an exact quote, free.
Serving Keller, TX - Our Local Coverage Area
We’re based in the Keller 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 Keller
Your slab is moving and taking the door frame with it. Keller’s clay soils shrink during hot, dry summers and expand after rain, which lifts and drops different parts of the foundation by a quarter inch or more. That seasonal movement twists the frame, making the door bind at the latch in warm weather and rattle loosely in winter. The lasting fix is re-setting the frame with composite shims or installing a floating jamb system. Call (682) 841-6652 and we’ll assess what your slab is actually doing before we touch the door.
Yes, if the fiberglass skin hasn’t delaminated from the core. We can repair the split, refinish the panel, and match the original stain or paint closely enough that the repair disappears from three feet away. If the corner has separated from the door slab, we’ll tell you straight that a new prehung Smooth-Star or Classic-Craft unit is the better spend. Call (682) 841-6652 and we’ll give you an honest read on which path makes sense.
Therma-Tru’s warranty covers manufacturing defects, not storm damage. Hail impact falls under your homeowner’s insurance policy. We can document the damage, provide a written repair or replacement estimate, and work directly with your adjuster to make sure the claim covers the full opening, not just the door slab. Call (682) 841-6652 and we’ll walk you through what your policy likely covers before you file.
It’s usually the threshold, not the door panel. Original thresholds on Marshall Ridge homes built in the 1990s have compressed over time, and the exterior seal has dried and cracked. Water runs down the siding, hits the sill, and finds the gap. We replace the threshold with an adjustable Therma-Tru unit and seal the exterior with polyurethane joint filler. If the sidelight frame itself has shifted from slab movement, we address that too. Call (682) 841-6652 for an exact assessment.
Both. We’re Sawyer Remodel Fort Worth, a General Contractor in Keller handling full kitchen and bathroom remodels as well as whole-home renovations. If you’re already tearing into a Keller home for a kitchen remodel and the entry door needs re-setting, we fold that into the same project scope with one written price. If you just need the door fixed and nothing else, we handle that standalone too. Call (682) 841-6652 and tell us what you’re planning.
Service Areas Near Keller
We handle Therma-Tru construction service across Therma-Tru service in Watauga, Therma-Tru service in Fort Worth, Colleyville, Hurst, Richland Hills, and the neighborhoods around Keller. If your home is on a clay slab anywhere in this corner of Tarrant County, we know how your door is moving.
Book Your Therma-Tru Service in Keller Today
Call (682) 841-6652 and we’ll schedule a free estimate. You’ll get a written price before any work starts, a live arrival time, and photo updates before and after. The door you’ll have when we’re done is the door that works through the next drought or rain cycle.
Written by Luca Romano, Owner at Sawyer Remodel Fort Worth, serving Keller since 2005.











