New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows Dallas 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 Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Why Dallas Homeowners Choose Therma-Tru Windows & Doors
Therma-Tru doors and windows are built to handle serious weather, and Dallas gives them plenty to handle. As an independent Dallas Therma Tru service provider, Westlight Windows Dallas repairs, re-glazes, and installs Therma-Tru entry doors, French doors, and Slim-Line impact windows all over the Metroplex – from Preston Hollow to Richardson, Oak Cliff to White Rock Lake. We’re not factory authorized, and we won’t pretend otherwise. What we are is the shop that Dallas homeowners call when a Classic-Craft door slab has hairline-cracked at the deadbolt bore or a Smooth-Star has sagged off its hinges after a decade of 100-degree afternoons. Call (361) 441-0865 and you’ll get a live person, a straight answer, and a written price before any work begins.
Why Trust Westlight Windows Dallas for Your Therma-Tru Windows & Doors?
Our Dallas field crews have disassembled and re-glazed more Therma-Tru entry systems than any independent shop in the Metroplex, and we stock the weatherstripping, hinges, and replacement glass packs that keep them weather-tight through North Texas storm cycles. That’s not marketing talk; it’s what we keep on the truck. When we show up to a Lake Highlands home with a Classic-Craft door that’s binding at the top reveal, the adjustable hinges and compression sweeps are already in the van.
Owen Satterfield grew up in the San Fernando Valley and learned the windows and doors trade at Los Angeles Trade-Technical College before relocating to Texas. He’s been in this trade for over two decades, and he’s known for measuring twice, ordering once, and never upselling a homeowner on glass packages they don’t actually need. His crews have handled quick single-window swaps in Oak Cliff and full door-and-frame overhauls on older houses near White Rock Lake. The standard is simple: “If I wouldn’t put it on my own house, I’m not putting it on yours.”
We’re an independently owned and operated Kingswell location, which means every job is governed by the Kingswell Guarantee: a written price before any work starts, a committed arrival window, a clean job site, and a written guarantee on the completed work. If a repair fails within the guarantee period, we return and correct it at no charge. That promise is handed to you in writing at job completion. It’s not a verbal assurance; it’s a document.
Common Therma-Tru Windows & Doors Problems We Fix in Dallas
- Fiberglass skin delamination and hairline cracking at the lockset bore on Classic-Craft Mahogany Collection doors. This is the one we see most on west-facing entries. A Classic-Craft slab absorbs afternoon sun like a brick wall, and the fiberglass skin can develop hairline cracks radiating from the deadbolt bore over time. The root cause is usually thermal stress combined with lock hardware that was torqued too tight at install. We repair the skin, reset the hardware to the correct torque spec, and install OEM compression weatherstripping so the door seals properly again.
- Sagging hinge-side reveals on Smooth-Star Fiberglass slabs over 80 inches tall. An 8-foot Smooth-Star slab is heavy, and the original two-hinge systems on older installs let the hinge side drop over time. The result is latch misalignment and a visible light gap at the bottom sweep – the door still looks closed, but North Texas dust and pollen walk right in. We correct the hinge geometry, upgrade to three-hinge systems where the slab demands it, and realign the latch so it throws dead-center.
- Compression weatherstripping grooves losing shape after multiple Dallas hail seasons. Therma-Tru’s compression weatherstripping works by holding its shape against the door slab. After a few hail cycles and a few summers of 104-degree heat, that groove loses its memory. The door starts letting dust in around the perimeter, and the weatherstrip looks flat instead of rounded. The fix is genuine OEM weatherstripping, not the universal foam tape from the big-box store. We stock the correct profiles for Classic-Craft, Smooth-Star, and Pulse Series doors.
- Bradded corner keys backing out on Slim-Line Impact Series sashes. The Slim-Line sash is joined with bradded corner keys, and under repeated wind-load cycling – the kind you get on an upper floor of a two-story in Preston Hollow during spring storm season – those keys can slowly back out. The result is visible frame racking at the sash corners. We disassemble the sash, reset the corner keys, and re-bed the joint so it holds square under wind load.
- Glass pack fogging and seal failure on decorative entry door inserts. Therma-Tru decorative glass packs – especially the oval and half-round inserts on Classic-Craft entries – are sealed units, and the Texas sun eventually breaks that seal. You’ll see fog between the panes that never wipes off. We source original-grade replacement glass packs matched to the door’s exact cutout dimensions, and we install them so the interior and exterior trim lines stay clean.
Therma-Tru Parts & Our Repair-vs-Replace Approach
For Therma-Tru, we lean on genuine OEM weatherstripping and adjustable hinges because their fiberglass door slabs and corner-key joinery are unforgiving with aftermarket substitutes. The weatherstripping profiles Therma-Tru engineers for a Classic-Craft are not the same shape as generic replacement kits, and the adjustable hinges on a Smooth-Star are calibrated differently than universal hinges from a hardware aisle. We replace glass packs and hardware with original-grade materials. We’ll tell you when aftermarket makes sense – it rarely does on a Therma-Tru slab – and we’ll show you why.
We only recommend full door replacement when the fiberglass shell is cracked through or the slab has lost its structural squareness beyond adjustable hinge correction. If the door can be properly repaired for a few hundred dollars, we’ll tell you that before we suggest spending the money on a new slab. That’s the Kingswell Way: say the price before the work. Call (361) 441-0865 to schedule a diagnosis and get your written line-item estimate.
Our Therma-Tru Service Process – Step by Step
- 1
Diagnosis. We inspect the slab, hinges, weatherstripping, glass packs, and rough opening. We’ll show you what’s failing, what’s salvageable, and what the repair will cost in writing before you commit to anything.
- 2
Repair or installation. We reuse what’s structurally sound and replace what isn’t with OEM or original-grade Therma-Tru parts. Whether it’s a glass pack swap on a Classic-Craft or a full Slim-Line window installation, the work is done to the manufacturer’s spec so warranty coverage stays intact.
- 3
Test. We cycle the door or window through its full range of motion. We check latch alignment, sweep contact, weatherstripping compression, and sash tracking. If the door doesn’t close dead-center on the first throw, we adjust until it does.
- 4
Warranty. Every job gets a written Kingswell Guarantee at completion. If something fails within the guarantee period, we come back and fix it at no charge – automatically, no negotiating required. Your written price, our committed arrival window, a clean job site, and the written guarantee come with every single Therma-Tru job we do.
Therma-Tru Products We Service & Install in Dallas
We work on the full Therma-Tru residential lineup. The Classic-Craft Mahogany Collection – fiberglass entry doors with genuine wood-grain detailing that we regularly re-glaze and re-weatherstrip. Smooth-Star Fiberglass – the workhorse slab, standard across Dallas subdivisions, and the one we most often correct for hinge sag. The Slim-Line Impact Series – impact-rated windows and patio doors built for hail and high-wind conditions. And the Pulse Series, which includes Therma-Tru’s Bluetooth® smart lock prep, popular in newer north suburbs like Frisco and McKinney where residents want entry hardware to integrate with home automation. We stock OEM weatherstripping, adjustable hinges, glass packs, and lock hardware for these lines locally, so a repair doesn’t stall waiting on a backorder.
For Dallas homeowners we also install and service hurricane-proof front and entry doors, French and double doors, insert our Window Replacement services, and full frame replacement – both Therma-Tru and across our other manufacturer lines.
We Also Service These Brands
Therma-Tru is one of eight manufacturer lines we carry – PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, and ViewLux are all stocked and serviced. If your project calls for a different glazing package, a different impact rating, or a different aesthetic than what Therma-Tru offers, we’ll match the product to the job rather than forcing the job to fit one brand.
FAQs – Therma-Tru Windows & Doors Service in Dallas
The hairline cracks you’re seeing usually start because the lockset was over-torqued during installation, and years of Dallas afternoon sun on the door’s outer skin added thermal stress on top of that. It can often be repaired without replacing the slab. We relieve the stress at the bore, repair the skin, and reset the hardware to manufacturer torque spec. If the fiberglass is cracked clear through the slab, though, replacement is the honest answer. Call (361) 441-0865 and we’ll tell you which situation you have after one inspection.
Yes. The glass packs on Classic-Craft and Smooth-Star entries are sealed units that can be swapped independently of the door slab. We source original-grade glass matched to your door’s exact cutout dimensions – oval, half-round, square, whatever the application – and install it so both the interior and exterior reveal lines stay clean. The door stays; the glass goes. For an exact price on your specific door, call (361) 441-0865 for a written estimate.
Slim-Line impact windows use laminated glass in a reinforced frame, which handles hail and wind-load cycling differently than standard vinyl. They’re tested to withstand impact and cyclic wind pressure, which matters in Dallas neighborhoods that get repeated spring hail. The trade-off is that the corner-key joinery on Slim-Line sashes can work loose over time under wind load, especially on upper floors. We service Slim-Line corner keys and sash alignment as part of our Therma Tru in Irving and Dallas work.
Depends on the slab. Some Smooth-Star doors can be retrofitted with multi-point locking hardware, but the slab’s bore geometry and thickness determine what’s physically possible. The Pulse Series smart lock prep is a factory feature, not a field retrofit, on most Smooth-Star slabs. We’ll look at your slab and tell you what’s realistic before recommending any hardware. Call (361) 441-0865 and we’ll schedule a look.
That’s a hinge geometry problem. On a Therma-Tru French door, the hinge-side jamb can settle with the foundation – and North Texas clay soil moves a lot – while the door slab doesn’t settle at the same rate. The result is a door that rubs at the top reveal in humid summer air and pulls away at the bottom in dry winter air. The fix is adjustable hinge correction plus, in most cases, a compression sweep replacement. It’s not a seasonal nuisance to live with; it’s a repairable alignment problem. Call (361) 441-0865 for a diagnosis – estimates are free.
Most Therma Tru service in Arlington and Dallas calls run between $150 and $500 for weatherstripping replacement, hinge correction, and glass pack swaps, depending on the door model and the number of components involved. Full door replacement with a Classic-Craft slab typically lands between $1,800 and $4,500 installed, and Slim-Line impact window replacements generally run $850 to $1,600 per opening depending on size and frame condition. Every estimate is written and line-itemed before any work starts – no revised invoices at the door. Call (361) 441-0865 to book your inspection.
Book Your Therma-Tru Service in Dallas, TX
We answer the phone with a live person, 24 hours a day, seven days a week. Call (361) 441-0865 for a free estimate on your Therma-Tru repair or installation – written price, committed arrival window, and the Kingswell Guarantee on every job.
Written by Owen Satterfield, Owner at Westlight Windows Dallas, serving Dallas since 2009.
Six Reasons Homeowners Choose Westlight Windows Dallas
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.