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 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
Therma-Tru Sliding & Patio Doors: The Houston Owner’s Guide
We stock and install Therma-Tru-compatible sliding and patio door parts across Houston, with most roller, track, and handle-set replacements running $220 – $520 installed, and full door slab replacements typically $1,800 – $4,600 depending on glass package and size. Most owners call us because the door has gone from easy-gliding to a two-hand shove, or the handle spins without catching. The good news: nearly all Therma-Tru sliding door failures trace back to four parts we carry on the truck, and we can usually swap them the same visit once we’ve confirmed the model.
Which Therma-Tru Models This Applies To
Therma-Tru has built sliding patio doors under several series names over the years, and Houston homes have a healthy mix of all of them. The main lines we see are the Smooth-Star, Pulse, and the older Slim-Line series, plus the hinged patio door systems that share some hardware with the sliders. The compatibility gotcha most owners run into is this: roller cartridges from a Smooth-Star door will not drop into a Pulse frame without modification, even if both doors are the same nominal width. The roller housing heights differ by about 1/8 inch, and forcing the wrong cartridge in scores the bottom rail and ruins the adjustment screw.
If you can find the label, check the top or bottom rail of the door slab for a small AAMA certification sticker. If the sticker is gone (sun and humidity eat them fast in Houston), measure the door slab thickness. Smooth-Star sliders run 1-3/4″ thick; Pulse units are usually 1-3/4″ as well but use a two-wheel tandem roller. For handle sets, a photo of the inside escutcheon plate sent to us before the visit saves everyone time. OEM Therma-Tru parts are what we order by default when a door is still under the manufacturer’s warranty or you specifically want factory hardware. For out-of-warranty doors, we often use quality aftermarket equivalents from Truth or Prime-Line, which cost 30 – 40% less and hold up just as well in Houston’s humidity, as long as the specs match.
Signs Your Therma-Tru Sliding & Patio Door Is Failing
- The door needs a running start or both hands to move. This is almost always a flattened roller wheel or a bearing that’s been grinding on the track. Houston’s fine silt and pollen work into the roller housing and act like sandpaper on the nylon wheel. Once the wheel gets a flat spot, every slide is a battle.
- A grinding or gravelly sound when the door moves. That sound is the roller bearing chewing itself up. The noise usually gets worse in dry weather and better after rain, which tells you the bearing has lost its grease and is running metal-on-metal.
- The handle lifts but the latch doesn’t retract. Therma-Tru’s internal latch linkage is a stamped pot-metal tongue that rounds over after years of use. Once the tongue is rounded, lifting the handle doesn’t pull the latch fully back, and the door stays locked even when the handle feels fine.
- Water stains or softness at the bottom corners of the door frame. This is often a failed weatherstrip or a clogged weep hole in the bottom track, but left unaddressed in Houston’s storms, it will rot the sill and spread into the subfloor. The fix is cheaper when caught early.
- The door sits visibly lower on one side or drags on the track. A roller adjustment screw that’s backed out or a roller that’s collapsed on one side causes this. Running the door this way for months tears up the bottom rail and eventually bends the adjustment bracket, which turns a $90 roller job into a rail repair.
Replacement Cost & What’s Included
| Service | Typical Houston Price | What’s Included |
|---|---|---|
| Roller cartridge replacement (pair) | $220 – $360 installed | Two OEM or aftermarket rollers, tracked and adjusted, old parts removed |
| Track repair or replacement | $180 – $420 installed | New aluminum track section or full-length track, frame cleaned, weep holes cleared |
| Handle set with internal latch | $160 – $290 installed | New exterior/interior handles, latch mechanism, strike alignment |
| Weatherstrip replacement (full perimeter) | $120 – $230 installed | New bulb seal, fin seal at the interlock, and sill gasket |
| Full sliding door slab | $1,800 – $4,600 installed | New Therma-Tru or equivalent slab, glass package, hardware, haul-away of old door |
The range on any sliding door part comes down to three things: whether we’re matching an OEM part or a quality aftermarket one, how much frame repair the track needs once we open it up, and which Therma-Tru series you have. The Kingswell Way applies here like every other job we do: we write the price down before any work starts, and that price doesn’t change once we’re in the middle of the repair unless you approve a different scope. If a roller we install fails within the guarantee period, we come back and fix it at no charge. No negotiating required.
DIY or Call Us?
Sliding door rollers and handle sets are not in the same danger category as garage-door springs or gas lines, and some owners can absolutely swap a handle set themselves if they have the right screwdriver and patience. The place DIY goes wrong on Therma-Tru sliders is the roller adjustment. The adjustment screw sits behind a small plug at the bottom of the door panel, and if you crank it without supporting the slab, you can crack the bottom rail or bow the frame enough that the door will never seal right again. Tracks with a bent or corroded section are also a job for a trained tech, because pulling a track out means lifting the slab and the job can turn into frame repair quickly. If you want a sanity check on what you’re seeing, call us at (325) 326-4211 and describe the symptom. We’ll tell you if it’s worth a service call or something you can handle with a screwdriver.
FAQs
In Houston’s humidity and silt-heavy air, expect original Therma-Tru rollers to last 8 – 12 years before they start flattening or grinding. Doors on concrete-covered patios with heavy tree pollen may need rollers closer to the 8-year mark, while fully shaded sliders can go 12 or more. Aftermarket rollers with sealed bearings typically hold up about the same, but they’re a smaller investment to replace. If your door is over a decade old and starting to drag, the rollers are the place to start. Call (325) 326-4211 and we’ll price the swap for your specific model.
Yes, and in most cases the repair is a few hundred dollars rather than a few thousand. Rollers, tracks, handle sets, weatherstrip, and adjustment brackets are all serviceable parts on Therma-Tru sliders. The only time replacement makes more sense is when the door slab itself is compromised: rotted bottom rail, fogged glass from a failed seal, or a frame that’s pulled away from the house. We’ll always tell you honestly which bucket you’re in before we quote anything.
Most roller replacements take 60 – 90 minutes from start to finish, including pulling the slab, swapping the cartridges, cleaning the track, and re-hanging the door with proper adjustment. A full track replacement usually runs 2 to 2.5 hours because the old track may be adhered to the sill and the weep holes need clearing. We schedule a real arrival window and we keep it.
We stock common Therma-Tru roller cartridges, handle sets, and weatherstrip profiles on our trucks when we’re running Houston service calls, along with compatible parts for PGT, CGI, and CWS doors. If your door needs a less common part or you want a factory OEM match, we order it and schedule the install once it’s in. Call (325) 326-4211 with your model info and we’ll tell you what we have available before we come out.
Scheduling a Therma-Tru sliding door repair in Houston starts with a phone call. We’ll get your model information, give you a written price before any work starts, and show up in the window we committed to. Call (325) 326-4211 for a free estimate.
Written by Owen Satterfield, Owner, Westlight Windows Houston at Westlight Windows Houston, serving Houston and nearby areas.
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.