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
Fast, Reliable Door Installation Across Houston
Door installation in Houston costs $850 to $4,200 for most exterior doors, installed, and sliding glass door replacement runs $1,800 to $5,600 depending on size, impact rating, and framing condition. Those are the ranges we quote every week across Houston, from Heights bungalows to Clear Lake waterfront homes. What changes the number is salt air, hurricane code requirements, and what we find behind the old frame. Call (325) 326-4211 and we’ll give you a written price before any work starts.
We’ve been doing this since 2009, and we know what Houston’s unzoned, patchwork code landscape does to doors. A homeowner in Sharpstown and a homeowner in Clear Lake live five miles apart, but their doors answer to completely different sets of rules. That’s why we send trained technicians, not salespeople, to measure and spec each job.
Why Westlight Windows Houston Is Houston’s Preferred Door Installation Company
Owen Satterfield built this company on a simple habit: show up when we say we will, put the price in writing before a single screw turns, and come back at no charge if our work fails within the guarantee period. Houston homeowners have heard a lot of promises from contractors. We put ours on paper, on the date of the job, handed to you before we leave.
Our Houston crews know what a 1970s aluminum door frame looks like when it is rotten behind the trim. They know what Meyerland floodwater does to a threshold. They know the difference between a door spec that meets Galveston County wind rules and one that is legal in a neighborhood with no wind-borne debris requirement at all. That matters here more than in almost any other city in America.
Every technician who walks through your door is background-checked and uniformed. You will know exactly who you are letting into your home. And when you call us at (325) 326-4211, a live person answers. Twenty-four hours a day, seven days a week. Not a voicemail box. Not a chatbot.
We carry eight manufacturer lines, including PGT, CGI, Therma-Tru, and ES Windows, so we match the product to the job instead of forcing the job to fit one brand. Houston’s humidity, salt air, and storm seasons mean the right material choice is not optional.
Door Replacement in Houston
Door replacement in Houston is often less about looks and more about what is happening behind the frame. We regularly pull a 1970s or 1980s aluminum unit in Sharpstown or Meyerland and find the original rough opening was never flashed. No sill pan, no jamb flashing, just caulk and hope. The first strong thunderstorm pushes wind-driven rain straight through, and it drips down the interior drywall for years before anyone notices. A basic exterior door replacement in Houston runs $850 to $1,900. A fiberglass Therma-Tru entry unit with rot-resistant jambs and proper flashing runs $2,200 to $4,200 installed.
When a Houston homeowner needs it: when the door sticks in the summer humidity, when daylight shows around the edges, when the threshold has gone soft from repeated rain wicking, or when a west-facing door has warped enough that the deadbolt no longer lines up.
Fiberglass Entry Doors for Houston Humidity
Wood doors swell, bind, and rot in Houston’s subtropical climate. It is not a matter of if; it is a matter of which rainy season. Fiberglass entry doors from Therma-Tru hold their shape through August humidity and do not delaminate the way wood-veneer units do after a few wet seasons.
What We Find Behind Old Houston Frames
Rot, mostly. Older homes in the Heights and Montrose have original wood jambs that have absorbed decades of humidity, and many have been patched with caulk rather than rebuilt. We strip the trim, assess the load-bearing framing, and replace what is compromised before the new door goes in. If the sill is rotted, we cut it out and set the new unit on a proper sill pan.
Sliding Glass Door Replacement in Houston
Sliding glass door replacement in Houston is one of the most common calls we get after a strong thunderstorm, especially in Meyerland and other flood-prone neighborhoods. A 1980s aluminum slider with no flashing and a rotted threshold will leak during heavy wind-driven rain, and no amount of caulk fixes it. Replacing that unit typically runs $1,800 to $3,800 for a standard 60-inch or 72-inch opening. Impact-rated PGT sliders with stainless steel rollers and Miami-Dade NOA documentation run $3,200 to $5,600, and they are the right call in Clear Lake, Seabrook, and other coastal-exposure areas.
When a Houston homeowner needs it: when the track has worn through, when the door takes a shoulder to move, when water stains appear on the interior floor after storms, or when the seals have failed and the glass fogs permanently.
Coastal-Spec Sliders vs. Standard Sliders
Clear Lake and the bay side of Houston demand impact-rated glass and stainless steel hardware. Standard aluminum rollers and carbon-steel screws rust and bind within five years in salt air. We spec hot-dip galvanized or stainless fasteners on every exterior door within a few miles of the coast. The upfront cost is higher, but the standard-spec version fails inside a decade.
Flash the Opening Before the Trim Goes On
We replaced a leaky sliding glass door in a 1980s Meyerland home last spring. The original aluminum frame had no flashing, and the threshold had rotted from repeated floodwater wicking. We set a PGT impact-rated unit with stainless steel rollers, flashed the rough opening before trimming it out, and the homeowner has not seen a drip stain since. That is the difference between replacing a door and redoing a door.
Trusted Brands We Service in Houston
We stock and install entry and sliding doors from Therma-Tru, ES Windows, ECO Window Systems, and Mr-Glass, plus impact-rated lines from PGT and CGI. Because we carry eight manufacturer lines, our Houston customers get genuine product choice. A Clear Lake homeowner who needs a Miami-Dade-rated impact door gets that. A Heights homeowner who wants a fiberglass Therma-Tru entry unit with divided lites gets that. We keep parts local, and our Houston installation calendar is scheduled by our own office, which means no third-party subcontractor roulette.
Common Door Installation Problems We See in Houston Homes
- Unflashed jambs and sills on 1970s-80s aluminum frames. Wind-driven rain gets pushed through the gaps during thunderstorms, especially in Meyerland and other flood-prone areas. The leak shows up as water staining on the interior floor or baseboard, sometimes years after the first intrusion.
- Rusted standard steel hinges and screws near the coast. Salt air from Galveston Bay travels further inland than most homeowners realize. We specify stainless steel or hot-dip galvanized hardware on exterior doors within about five miles of the water, because standard steel binds and seizes within a few years.
- Sagging and seal failure on west-facing non-impact doors. Houston’s intense afternoon sun and high humidity destroy seal integrity on doors that are not designed for it. The door sags, the sweep stops meeting the threshold, and daylight starts showing through.
- Rotting wood jambs in pre-1960 bungalows. The Heights, Montrose, and Eastwood have beautiful older homes with original door frames that have absorbed decades of Houston humidity. By the time we are called, the jamb often needs to be rebuilt, not just caulked.
Pricing for Door Installation in Houston, TX
Here is what we quote in Houston, written plainly. Basic exterior door replacement: $850 to $1,900. Fiberglass entry door with rot-resistant jambs and new flashing: $2,200 to $4,200. Standard sliding glass door replacement: $1,800 to $3,800. Impact-rated slider with stainless hardware: $3,200 to $5,600. The main things that move the number are impact rating, size, whether the existing frame can be salvaged, and whether we find rot behind the trim. We give you a written price before any work starts, and we do not revise it at the door. Call (325) 326-4211 for a free estimate.
We Also Serve Cities Near Houston
Our Houston-based crews regularly work in Pasadena, Humble, Deer Park, and Friendswood. If you are in one of those areas and need Door Installation, we can schedule a measurement visit and provide the same written-price, same-guarantee service we offer throughout Houston.
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 About Door Installation in Houston
No, not for most of Houston. Houston has no citywide building code as of 2025, which means a home in Sharpstown has no wind-borne debris requirement while a home in Clear Lake typically falls under coastal storm-rated construction rules. The safe move is to check your specific subdivision or ask us during the estimate; we’ll tell you exactly what your exposure requires so you do not overpay inland or underbuild near the coast. Call (325) 326-4211 for a straight answer.
That pattern almost always means wind-driven rain is being pushed past unflashed jambs or a failed sill pan. Light rain runs down and away. A thunderstorm’s wind pressure drives water horizontally into gaps that feel sealed on a dry day. The fix is not more caulk; it is pulling the door, flashing the rough opening properly, and setting a new threshold. We see this constantly in 1970s and 80s homes around Meyerland. Call (325) 326-4211 and we’ll diagnose it honestly, even if the answer is a repair rather than a replacement.
Stainless steel or hot-dip galvanized hinges, screws, and rollers, without exception. Standard steel hardware within about five miles of Galveston Bay rusts and binds within a few years. We specify stainless on every Clear Lake, Seabrook, and bay-side job we do, and we recommend it for any home in east or southeast Houston. It adds modest cost and buys decades of service. Call (325) 326-4211 and we’ll spec it correctly the first time.
Sometimes, but only if the frame is structurally sound and has not rotted at the threshold. A worn roller or a bad lock can be replaced. A sagging frame, fogged glass, or a soft threshold cannot. In Houston, most 1980s aluminum sliders we see have reached the end of their service life; repair buys a year or two, not a decade. We’ll tell you which situation you have before we try to sell you anything. Call (325) 326-4211 for an honest assessment.
Impact-rated doors are built with laminated glass and tighter seals, which reduces air leakage and solar heat gain. A west-facing standard sliding door in Houston will leak cooled air all summer and admit significant radiant heat. A PGT or CGI impact unit cuts that loss measurably, and the tighter construction also blocks the drafts that make a room feel swampy in August. The energy savings alone rarely justify the full cost of upgrading to impact glass, but combined with the storm protection and the reduction in daylight bleed, many Houston homeowners find it worth the difference. Call (325) 326-4211 and we’ll walk you through the numbers for your specific door.
Written by Owen Satterfield, Owner at Westlight Windows Houston, serving Houston since 2009.
Ready for a written price before any work starts? Call (325) 326-4211 to schedule your free estimate. Our door installation team covers all of Houston, from the Heights to Clear Lake, and we’ll show up in the window we give you.
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.