New windows and doors improve comfort, cut energy bills and add long-term value to your home. Meridian Windows and Doors Dallas pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
1. 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.
2. 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.
3. 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 Patio Door Installation in Dallas: What to Know First
Therma-Tru patio door installation in Dallas typically runs $1,800 to $4,600 installed, depending on the door line, glass package, and what the opening needs. Most replacements take one full day once materials arrive, though custom-size orders can add two to four weeks of lead time. We’re an independent Therma-Tru service provider, not a factory-authorized dealer, which means we spec the right door for the opening and stand behind the install with a written 365-day guarantee. If you own a Therma-Tru patio door that is failing, sagging, or leaking at the sill, call (325) 309-2639 and we’ll give you a straight answer about whether it is worth fixing or replacing.
This page is for Dallas homeowners who already have a Therma-Tru patio door, or who are considering one, and need an installer that understands how these doors behave in North Texas heat and clay soil. No sales pitch. Just the facts about how Therma-Tru doors fail here, what they cost to replace, and how we do the work.
How Therma-Tru Products Fail – and How We Fix Them
Therma-Tru builds a solid door, but every product line has weak points. Here is what we see on patio door jobs across Dallas, from Lake Highlands to Kessler Park:
- Classic-Craft and Fiber-Classic patio doors: lower rail rot at the weatherstrike. The fiberglass skin on Therma-Tru’s entry systems is durable, but the bottom rail on older patio door models includes a wood edge that wicks water when the sweep gasket wears. We see this in Dallas on west-facing doors that catch full afternoon sun and driven rain. The fix is not caulk. We pull the door, check the rail, and replace the affected section or the full slab if the rot is into the frame.
- Smooth-Star sliding patio doors: track wear and roller failure. The Smooth-Star line is common in Dallas production homes built between 2005 and 2015. The original rollers were light-duty nylon wheels that flatten after a few Dallas summers. When the door starts dragging or hopping, homeowners think the door is warped. Nine times out of ten it is a dead roller. We replace both rollers with stainless steel aftermarket sets that outlast the originals.
- Benchmark patio doors (Therma-Tru’s patio-specific line): sill pan leaks at the threshold. Benchmark doors ship with a standard threshold, but on slab foundations in Dallas, any settling of the slab pulls the threshold away from the door. Water then runs under the sill and into the subfloor. Our fix is to remove the door, install a proper sill pan with a back dam, and reset the threshold in sealant rated for Dallas summer temperatures.
- Glass interlayer haze on low-E tempered panels. Therma-Tru patio doors with insulated glass can develop a milky film between the panes when the edge seal fails. Dallas humidity accelerates this. It cannot be cleaned because it is between the glass. The repair is a new insulated glass unit, which we order to the exact size and glass spec of the original.
- Weatherstripping degradation on fiberglass door systems. The factory bulb seals and sweep gaskets on Therma-Tru patio doors dry out and crack after roughly six to eight years in Dallas heat. Owners notice drafts and higher energy bills before they see the damage. Replacing the weatherstripping with a marine-grade EPDM product costs a fraction of a new door and restores the air seal.
Our Therma-Tru Patio Door Installation Process
Every Therma-Tru job we run in Dallas follows the same sequence. Here is how it works when you call Meridian Windows and Doors Dallas:
- 1
The measurement call. We measure the rough opening, the slab thickness, and the reveal on all four sides. Elliot Vance checks the numbers himself before we order anything. His rule: measure it right the first time, and the rest of the job takes care of itself.
- 2
The written quote. You get a line-item price in writing before any work starts. That number includes the door, hardware, disposal, and labor. It does not move at the door.
- 3
Parts decision. We talk through OEM versus quality aftermarket parts. If the door is under Therma-Tru warranty, we use OEM and document everything for the claim. If it is out of warranty, we recommend the best option for Texas weather, not the cheapest.
- 4
Removal and prep. We pull the old door, inspect the framing, and repair any rot or uneven framing before the new door goes in. No door goes into a bad opening.
- 5
Installation. We hang the door, set the threshold in the proper sealant, install a sill pan if the home needs one, and adjust the rollers or hinges until the door moves square and smooth.
- 6
The test and the walkthrough. We run the door through a full cycle: open, close, lock, let the sun hit it. Then we walk you through what we did and what to watch for. The whole job is covered by our written 365-Day Done Right Promise.
What Therma-Tru Patio Door Installation Costs in Dallas
Here are the numbers we quote most often, based on real Dallas jobs:
- Benchmark sliding patio door, basic white, 6-foot opening: $1,800 to $2,400 installed.
- Benchmark French patio door, dual-pane low-E glass: $2,800 to $3,800 installed.
- Custom-size Therma-Tru patio door with specialty glass or hardware: $3,500 to $4,600 installed.
- Roller, track, and weatherstripping rebuild on an existing Therma-Tru slider: $275 to $525.
What moves the price: the door size, whether it is a slider or French door, the glass package (low-E glass, which is a thin coating that reflects heat while letting light through, adds cost but pays back fast in Dallas), and how much framing or flooring repair the opening needs. Call (325) 309-2639 for a free estimate and we will put the exact number in writing.
Why Dallas Homeowners Call Meridian Windows and Doors Dallas for Therma-Tru Work
We are a windows-and-doors specialist within the Garrison Partners family, operating to The Garrison Standard since 2009. That means every job gets a written price before work starts, and every install carries a written 365-Day Done Right Promise: if the work fails within that year, we come back at no charge. No fine print about labor exclusions. Our technicians are background-checked and uniformed, so you know exactly who is walking through the door. And because we also carry PGT, CGI, CWS, and ES Windows in our portfolio, we’ll tell you honestly if a different product serves your opening better than a Therma-Tru. We are not here to sell you a brand. We are here to fix your door. Our phones are answered by a live person around the clock, every day. Call (325) 309-2639.
FAQs
Most sliding patio door problems in Dallas are repairable: rollers, tracks, weatherstripping, and threshold seals account for the majority of failures we see. If the frame is rotted, cracked, or the glass seal has failed, replacement is usually the better call. We’ll tell you which one applies to your door before any money changes hands. Call (325) 309-2639 for an honest assessment.
Yes, we install homeowner-supplied Therma-Tru doors in Dallas, provided the door is sized correctly for the opening. One caveat: many box-store doors ship with mismeasured rough openings or damaged factory seals. We check the door and the opening before we touch a screw. If the measurement is wrong, we’ll say so before the job starts, and the written quote will reflect the correction.
No. Therma-Tru’s warranty covers the product, not the installation. Your warranty paperwork remains valid as long as the door is installed to the manufacturer’s specifications, which is exactly how we install. Let me add one thing: we document every step, so if you ever need a warranty claim, you have a written record of how the door went in. Call (325) 309-2639 to talk about your specific door.
For an in-stock door at a distributor, we typically schedule the install within one to two weeks of your written estimate. Custom-size Therma-Tru doors take longer because the factory lead time is two to four weeks. Emergency calls, like a door that will not close or lock at all, get first priority on the schedule. We will give you a firm date in writing and keep it.
It covers the entire installation in writing: labor, materials we supplied, and the workmanship of our crew. If anything fails within 365 days of the install, we return and make it right at no charge. No prorating, no exclusion for labor. That promise applies to every Therma-Tru patio door installation we complete in the Dallas area.
Written by Elliot Vance, Owner, Meridian Windows and Doors Dallas at Meridian Windows and Doors Dallas, serving Dallas and nearby areas.
Six Reasons Homeowners Choose Meridian Windows and Doors Dallas
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
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.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.