New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows Houston pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line homeowners arrive naming - the most impact certifications in the industry$$$
- More impact certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe value pick$$
- Vinyl systems built to strict wind codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Factory-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Therma-Tru Windows & Doors in Houston, TX | Westlight Windows Houston
We’re an independent Therma-Tru service provider working across Houston, and the thing that separates our Houston Window Replacement work here from everyone else’s is simple: we understand what Houston’s heat, humidity, and slab movement do to these doors. If you need an entry door adjusted, re-weatherstripped, or fully replaced with a Therma-Tru unit that’s properly flashed for Gulf Coast rain, call us at (325) 326-4211. We cover the full Houston metro, from older bungalows in the Heights to newer construction near Clear Lake.
Why Houston Residents Choose Us for Therma-Tru Service
Our crews have been correcting Therma-Tru door and frame installations exposed to the Gulf Coast’s humidity, storm cycles, and settling slab foundations for over a decade. We know which factory components hold up and which need upgraded flashing, sealing, and weatherstripping to survive this climate. Owen Satterfield leads our Houston crew, and he grew up learning the trade at Los Angeles Trade-Technical College before moving east and building a team that’s been serving Houston homeowners for years. He still keeps a worn manufacturer’s spec sheet in his front pocket and reads it before quoting a price. We’re a Therma-Tru sales & service provider, but we’re independent, not manufacturer-affiliated or authorized. That means our recommendations come from what actually works on Houston homes, not what a factory rep wants pushed this quarter. Every job runs under the Kingswell Guarantee: a written price before work starts, a committed arrival window, a clean job site, and a written guarantee when we finish. If a repair fails within the guarantee period, we come back and correct it at no charge.
Common Therma-Tru Windows & Doors Problems We Solve in Houston
- Bottom rail delamination on Fiber-Classic entry doors. This happens when unflashed sills pond water during Houston’s heavy downpours. Moisture wicks up into the door’s bottom rail, the fiberglass skin separates from the core, and the door starts to feel spongy at the bottom. We see this constantly after strong spring thunderstorms.
- Warping or misalignment on slab-hung Classic-Craft units. Houston’s expansive clay soils shift as they cycle between wet and dry, especially in neighborhoods like the Heights and Sharpstown. A Classic-Craft Mahogany door that’s been hanging straight for years will suddenly start catching at the top corner. It’s rarely the door’s fault, it’s the foundation moving underneath it.
- Failed compression weatherstripping at jambs on older Smooth-Star doors. Houston’s humidity is brutal on rubber and foam seals. When the compression strip at the jamb goes flat or tears, humid air infiltrates around the door and your cooling bills climb. We replace the weatherstripping with Therma-Tru OEM profiles, which seal tight against our climate.
- Corroded hinge and strike hardware on Therma-Tru storm doors. Clear Lake and other neighborhoods near Galveston Bay get real salt air. Hinges that would last fifteen years inland start pitting and binding in five. We swap in marine-grade stainless hardware or OEM replacements where the original finish hasn’t held up.
- Swollen frames from repeated flooding. In Meyerland and other flood-prone areas, door frames absorb water after street flooding. The frame swells, the door won’t latch, and sometimes the whole prehung unit needs to come out. We’ve done enough of these to know exactly what needs replacing and what can be saved.
Therma-Tru Service in Houston: What Local Conditions Mean for Your Equipment
Houston is an unzoned city with no citywide building code, which means our Window Installation in Houston navigates wildly varying standards from one neighborhood to the next. In Meyerland, after a May storm flooded the street, our crew pulled a Therma-Tru Fiber-Classic Oak entry door from a 1978 brick ranch and found the original builder had set the prehung unit directly on the slab with no sill pan. No pan flashing, no seal, nothing between the door’s bottom rail and the concrete. The frame had been wicking water for decades, and the bottom three inches of the jamb had turned to pulp. We replaced the swollen frame with a new Therma-Tru Classic-Craft unit, added a full-width thermoplastic sill pan, and sealed the brickmold with polyurethane caulk before rehanging the door. Six months later the homeowner told us their post-storm water streak was gone. That’s the difference between a Houston-focused Therma-Tru service and a generic door installer: we know where the water goes in this city, because we’ve pulled enough water-damaged units out of enough Houston slabs to recognize the pattern before it gets worse.
Therma-Tru Models & Products We Service in Houston
We service the full range of Therma-Tru residential entry doors and exterior doors, including the Classic-Craft Mahogany Collection, Fiber-Classic Oak Collection, Pulse Series, and Smooth-Star Series. We stock Therma-Tru OEM weatherstripping, astragals, and door bottoms locally so most adjustments and seal replacements can be done the same day without waiting on a shipment. When an OEM part has a long lead time, we machine-match thresholds and hinge plates from aftermarket suppliers, but we’ll always tell you which parts are factory and which aren’t before we install. We recommend full door replacement only when rot, core saturation, or frame racking exceeds what new seals and hardware can correct. For Houston homeowners, that line often depends on whether the original install had proper flashing.
Therma-Tru Service Pricing in Houston
Most Therma-Tru door adjustments, weatherstripping replacements, and hardware swaps in Houston run between $95 and $275 depending on the door age, condition, and whether OEM parts are required. A full replacement entry door with a prehung unit, slab, and hardware typically lands between $1,800 and $4,200 installed, but flood remediation and frame rebuilds in older homes can push higher. What drives the cost: whether the frame is sound, whether we’re working with an existing slab or a full tear-out, and whether the home is in a flood-repair zone requiring specific flashing and sealing work. Every quote is written before work starts, and it doesn’t change at the door. Call (325) 326-4211 for a free estimate and we’ll walk you through exactly what your door needs.
Serving Houston, TX - Our Local Coverage Area
We’re based in the Houston 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 Windows & Doors in Houston
Houston’s summer humidity causes the Fiber-Classic’s composite skin to absorb moisture and expand slightly, while the door’s frame may also swell. The result is a door that catches at the top or latch side during humid months and frees up when the air dries out. The fix is usually a selective hinge shim adjustment and replacement of the compression weatherstripping with an OEM profile that tolerates the seasonal movement. A technician can also verify the slab hasn’t shifted, which is common in Houston’s expansive clay neighborhoods. Call (325) 326-4211 and we’ll assess the door in person.
For a true impact-rated, missile-resistant entry system, the door itself, the frame, the glazing, and the installation method all need to meet wind-borne debris codes. We can’t convert an existing door into an impact-rated unit with hardware alone, but we can install a Therma-Tru Pulse or Classic-Craft unit with impact-rated glazing, and we can upgrade the frame anchoring, sill pan, and flashing so the assembly actually performs to its rating. We recommend a site assessment before ordering, because Clear Lake’s exposure near the bay matters for anchoring details. Call (325) 326-4211 to schedule a free evaluation.
Three things cause this in Houston: the adjustable threshold has been knocked out of adjustment over years of traffic, the door bottom has been scraped or compressed by a slab that’s shifted slightly, or the threshold itself has corroded or settled. We check all three during a service visit and replace the door bottom with a Therma-Tru OEM profile where available, then adjust the threshold to make full contact. It’s a $95-$150 fix in most cases. Call (325) 326-4211 and we’ll get it to seal tight before the next Gulf rain.
That depends on the door’s core condition. If the frame is sound, the slab isn’t saturated, and the door just needs weatherstripping, hardware, or a sill pan retrofit, repair is almost always the smarter spend, usually $150 to $500. If the bottom rail is delaminating or the core has absorbed water over years of Houston humidity, replacement makes more sense, and a new Therma-Tru unit will likely beat the energy performance of a 15-year-old door anyway. We’ll give you an honest assessment with numbers for both paths, and the written price comes before any work starts. Call (325) 326-4211 for a free estimate.
We treat flood-repaired doors as a full-frame job, not a slab swap. In Meyerland’s repeated-flood zone, the prehung unit, sill pan, flashing, and brickmold all need to be designed to shed water away from the foundation. We pull the old unit, assess the rough opening for rot, install a full-width thermoplastic sill pan, and flash the opening properly before hanging a new Therma-Tru Classic-Craft or Pulse unit. The all-in cost for a flood-remediated Meyerland entry door typically runs $2,200 to $4,800 depending on framing damage. Call (325) 326-4211 and we’ll come out, inspect the opening, and give you a written number.
Service Areas Near Houston
Our crews serve all of Houston service area and the surrounding communities, including Therma-Tru service in The Woodlands for newer construction, Therma-Tru service in Sugar Land for suburban homes with slab movement issues, plus Humble, Pasadena, and Friendswood. If your neighborhood isn’t listed, call us anyway, we likely cover it.
Book Your Therma-Tru Service in Houston Today
If your Therma-Tru door is sticking, leaking, or just not sealing like it should, call us at (325) 326-4211. We’ll get you a written price, show up in the window we give you, and leave the job site cleaner than we found it. Measure twice, quote straight, show up when we said we would.
Written by Owen Satterfield, Owner at Westlight Windows Houston, serving Houston since 2009.
Six Reasons Homeowners Choose Westlight Windows Houston
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.