Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why Austin Homeowners Choose Therma-Tru Construction
Penhallow Remodeling Austin provides independent Therma-Tru door service and installation across Austin, from entry door replacements to full kitchen, bathroom, and home addition remodels where Therma-Tru doors are part of the scope. We also offer Therma Tru repair in Austin for homeowners needing dedicated door service. Our crews work with Therma-Tru slabs, frames, hinges, and weatherseals on high-end remodels throughout the Austin area every month, so we know exactly how these doors perform in our specific climate; humidity, intense afternoon sun, and shifting expansive clay soil. We are not a Therma-Tru authorized dealer or factory service provider, and we say that plainly. What we are is a local Austin remodeling company that installs and services these doors often enough to know their failure points better than most, and we back every Therma-Tru repair or install with our written 365-Day Done Right Promise. Call (325) 225-5429 for a free estimate.
Why Trust Penhallow Remodeling Austin for Your Therma-Tru Construction?
Trevor Nash and our Austin crews have been putting Therma-Tru doors into remodels and additions around this city for over a decade, and we handle Therma Tru repair in Cedar Park as well. That matters because Therma-Tru doors are not generic fiberglass slabs you can hang and forget, especially not in Austin. A Classic-Craft Mahogany entry door on a west-facing exposure here takes direct afternoon sun for six months of the year, and the hardware, weatherstripping, and slab itself all respond to that heat in ways a door in Michigan never will. We know where the screw holes strip in composite jambs, which seal profiles actually compress against a south-facing threshold in August, and what a slab crack at the lower corner means when the clay soil under a 1970s slab-on-grade home finally moves.
Our technicians are background-checked and uniformed on every job. The price is written before any work starts, not given as a verbal ballpark that shifts when the crew arrives. And if the repair fails inside the guarantee period, we come back and fix it at no charge. That is the Kingswell standard, in writing, on every Therma-Tru service call and every remodel that includes one.
Styles & brands we work with
Common Therma-Tru Construction Problems We Fix in Austin
- Warped or bowed fiberglass slabs on west-facing doors. The Smooth-Star and Classic-Craft lines hold up well in most climates, but Austin’s afternoon sun pushes surface temperatures on a dark-painted west door well past what the slab was designed to absorb day after day. We see bowing of up to 3/16 inch across the width, which shows up as a visible gap at the latch stile or top corner. Sometimes the slab can be adjusted and re-hung. When the warp is permanent, we tell you honestly and quote a slab replacement rather than install seals that will fail in one season.
- Failed compression weatherstripping and corner seal pads on south-facing exposures. The original Q-Lon weatherstrip and the corner pads at the sill compress over time under heat and repeated cycling. South-facing doors in Austin take direct sun all winter and reflected heat all summer. Once the compression profile flattens, you get drafts, dust intrusion, and a door that whistles when the wind picks up off the Balcones Escarpment. We replace with genuine Therma-Tru components because aftermarket seals rarely match the compression profile and leak within months.
- Loose or sagging hinges on heavy Classic-Craft doors. Classic-Craft Mahogany Collection slabs are dense, some exceeding 120 pounds with glass and hardware. The factory hinges are fine on a fresh composite jamb, but after a few years of Austin’s humidity cycling, the original steel screws strip the composite material in the jamb. The door sags, rubs at the top latch corner, and the deadbolt stops aligning. We re-hang the slab with hardened screws in new pilot holes and shim the jamb back to true; it is a $175 to $600 fix that takes half a day, not a reason to replace the door.
- Stress cracks in the fiberglass skin at the lower corner of slabs. This one is specific to Austin’s soil. Expansive clay under a slab-on-grade home swells after heavy rain and shrinks in drought. The foundation moves a quarter inch, the rough opening racks, and the rigid fiberglass skin of a Therma-Tru slab can develop a hairline stress crack at the lower hinge corner. The crack itself is cosmetic but the racked opening means the door will never seal properly until the jamb is re-squared. We fix the opening first, then decide whether the slab needs refinishing or replacement.
- Failed multipoint lockstrips and Tru-Defense door bottoms after extreme heat and dust. The Austin combination of heat, fine limestone dust, and monsoonal rain cycles wears out door bottoms faster than temperate climates. Tru-Defense door bottoms and multipoint lockstrips lose their compression after a few seasons; you will notice daylight under the door or resistance when throwing the deadbolt. These are stock parts for us and a same-day fix on most service calls.
Therma-Tru Parts & Our Repair-vs-Replace Approach
We default to genuine Therma-Tru components on every repair where the part is available: Aston Mahogany inserts for Classic-Craft doors, Tru-Defense door bottoms, Q-Lon compression weatherstripping, corner seal pads, and multipoint lockstrips. Aftermarket seals for Therma-Tru doors almost never match the factory compression profile, which means they leak air, bind the slab, or tear within months. Paying for a genuine Tru-Defense door bottom that lasts five years beats a $12 generic sweep that needs replacing before next spring.
The honest repair-vs-replace line is simple. If the slab is cracked through the skin at a stress point, warped beyond fair adjustment, or the jamb has rotted from years of moisture, we will tell you to replace the slab or the unit rather than install parts that will not last a season. We are not going to sell you a weatherseal kit on a door that needs to come out. If the door is sound and the problem is hardware, seals, or alignment, we fix it and it stays fixed. Call (325) 225-5429 if you need a straight answer on a Therma-Tru door in Austin or Therma Tru in Georgetown.
Our Therma-Tru Service Process – Step by Step
- 1
Diagnosis at your door. We measure the slab, check the reveal gaps at the hinge and latch stiles, inspect the weatherstripping compression, and look for signs the rough opening has shifted; common in Austin’s expansive clay soil, especially on 1970s and 80s slab-on-grade construction. We give you the written price before any work starts.
- 2
Repair or install. For repairs, we replace the failed Therma-Tru component with genuine parts and re-hang or re-shim as needed. For installs on remodels and additions, the door is set plumb and square in the rough opening, insulated at the jambs, and flashed properly so the Austin rainy season does not rot out the sill.
- 3
Test the door under real conditions. We cycle the door through its full swing, check the deadbolt and multipoint lock throw, and look for daylight at every seal point. On a windy day in central Austin, you will know if the corner pads are doing their job.
- 4
Written warranty and the 365-Day Done Right Promise. Every Therma-Tru repair and install comes with a written guarantee. If anything fails inside the guarantee period, we come back at no charge. No service call fee, no re-inspection fee, no argument.
See the difference
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AfterTherma-Tru Products We Service & Install in Austin
We work on the full residential Therma-Tru line where it appears in Austin remodels and additions. Smooth-Star slabs are the most common; they are the value fiberglass door that builders spec on 1980s and 90s suburban homes. Classic-Craft Mahogany Collection doors are the high-end wood-grain fiberglass line we install on kitchen remodels and home additions where the entry is part of the project. Fiber-Classic Oak Collection doors appear on older Austin homes and hold up well, though the finish needs periodic UV protection in this sun. Pulse line doors with the integrated keypad deadbolt are increasingly common on new construction in Austin, and we service the locking hardware as well as the slab and seals. We stock common Therma-Tru weatherseal components, Tru-Defense door bottoms, corner pads, and hinge hardware locally for same-week turnaround on most service calls.
We Also Service These Brands
Penhallow Remodeling Austin is a full-service remodeling company and licensed General Contractor that works across the brand landscape on kitchens, bathrooms, and whole-home additions. The same crews that re-hang your Therma-Tru door also install KraftMaid cabinetry, Cambria and Silestone countertops, and Kohler fixtures. That multi-brand depth matters because a home addition is never a single product; it is a system, and we warranty the whole system in writing.
FAQs – Therma-Tru Construction Service in Austin
Classic-Craft doors hold up better than wood and better than most fiberglass competitors, but a dark-painted west-facing slab in Austin will eventually bow or fade without proper maintenance. The key is paint color selection at install and re-caulking the glazing seals every few years. If the bow is already there, we can often adjust and re-hang; if it is permanent, slab replacement runs $1,800 to $4,500 with install. Call (325) 225-5429 and we will take a look and give you a written price.
Yes, in most cases. Smooth-Star slabs use a replaceable insert system, and we carry or can source Aston Mahogany inserts and the standard glass options. The job typically falls under fiberglass repair and refinish at $300 to $1,200 depending on the insert and any frame adjustment needed. If the insert has leaked and the interior of the slab shows water damage, we will tell you before ordering parts whether the slab itself is still sound.
The humidity swells the composite jamb and the slab, but the real cause is usually that the rough opening has shifted slightly or the hinge screws have worked loose in the jamb. Austin’s clay soil expands when the rains come and the foundation moves, which racks the opening just enough that the top latch corner binds. We re-shim the jamb, replace the stripped hinge screws with hardened screws in fresh pilot holes, and the door swings clean again. That repair is $175 to $600. Give us a call at (325) 225-5429 for a written quote.
Yes. The Pulse deadbolt assembly is replaceable as a component, and the loose feel is usually worn internal gearing or a misaligned strike plate from slab sag. We inspect the lock, the slab alignment, and the strike, then quote the repair as a hinge and latch re-hang plus lock adjustment in the $175 to $600 range. You do not need a new door for a lock problem.
For a narrow side-yard entry, a Smooth-Star slab with a 2-foot-6-inch width and no sidelights is the practical choice; it is lighter than Classic-Craft, holds up to the humidity, and leaves enough swing clearance for the tight setbacks common in older Austin neighborhoods like Hyde Park or Rosedale. Tell me what you need, I’ll tell you what it costs, and we’ll go from there.
Here is what our Therma-Tru work typically costs in Austin:
| Therma-Tru Service | Price Range |
|---|---|
| Entry door slab replacement with install | $1,800 – $4,500 |
| Entry door weatherseal and threshold kit | $250 – $800 |
| Hinge and latch re-hang / adjustment | $175 – $600 |
| Fiberglass repair and refinish | $300 – $1,200 |
| Home addition (includes Therma-Tru entry door install) | $45,000 – $130,000 |
Every price on that table is written before work starts. The number we quote on day one is the number on the invoice; no change orders on our own work, no “we found something in the wall” markup unless you approve it in writing first.
Book Your Therma-Tru Service in Austin, TX
A sagging Therma-Tru door or a failed seal is not a citywide emergency, but it will not fix itself either. Call (325) 225-5429 and we will schedule a visit, diagnose the door, and hand you a written price. Free estimates, real people on the phone, and a 365-Day Done Right Promise in writing.
Written by Trevor Nash, Owner at Penhallow Remodeling Austin, serving Austin homeowners for over a decade.
