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
Fast, Reliable Window Installation Across Houston
Window installation in Houston runs $450 to $1,900 per opening for most standard replacements, with full-home projects on a 2,000-square-foot house typically landing between $9,000 and $24,000 installed. The range swings on three things: the window line you choose, whether the existing frame is rotted, and whether your zip code requires impact-rated glass. We’re Window Installation specialists based right here in Houston, and we give you a written price before any work starts, not a ballpark that changes at the door. Call (325) 326-4211 and you’ll get a real person, day or night.
Why Westlight Windows Houston Is Houston’s Preferred Window Installation Company
Houston homeowners have seen it all: contractors who quote low and revise high, crews who leave 3-inch gaps around the frame, and “warranties” that evaporate six months after the check clears. We built Westlight Windows Houston to be the opposite of that. Since 2009, we’ve operated as an independently owned and operated Kingswell location, and Owen Satterfield runs the Houston shop with one rule: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. That’s The Kingswell Way, and it applies to every job from a single casement swap in Meyerland to a 22-opening full-house replacement in Clear Lake.
Our Houston reputation rests on specifics. We carry eight manufacturer lines including PGT and CGI impact-rated units, which matters when you’re in a windstorm zone. Our technicians are background-checked and wear uniforms, so when someone knocks on your door in the Heights or Deer Park, you know exactly who you’re letting in. And when you call, a live person answers. Not a voicemail box. Not a chatbot. Someone who can schedule your estimate, answer a question about low-e coatings, or dispatch a crew if you’ve got water coming through a second-story bedroom window at 11 p.m. during a squall.
We know Houston’s housing stock because we’ve worked in it for years. Bungalows in the Heights with original 1920s wood double-hungs. 1970s brick ranch homes in Sharpstown with unflashed aluminum frames that leak after every thunderstorm. Massive 1990s suburban tracts where the builder-grade windows are failing all at once. That local knowledge means we don’t walk your house guessing. We know what to look for before we ever touch a screwdriver.
Window Contractor in Houston
A window contractor in Houston does more than swap glass. The job starts with an inspection of the existing opening: the framing, the flashing, the sheetrock around the jamb, and the condition of the sill. In Houston, that inspection frequently turns up hidden damage because our humidity and storm cycles are brutal on window assemblies. We rebuild rotted jambs, replace undersized lintels, and install new flashing before the new unit goes in. Most homeowners don’t realize that pulling a permit for a replacement means the rough opening now has to meet current code, not the code from when the house was built. That’s where cheap bids fall apart and honest bids hold up.
Inspection First, Written Allowances
Here’s how we keep your quote honest. Before we write a single price, we inspect every opening: we check for rot, measure the rough opening, and identify whether the existing frame carries the design pressure rating Houston code requires for your location. If we see things that might move the number once walls are open, we write an allowance into the contract. You see it in writing before we start. Any surprise that appears mid-job gets priced and approved by you in writing before we touch it.
Permits, Code, and What Actually Matters
Houston doesn’t have a citywide building code, which sounds like it makes things easier. It doesn’t. Your permitting authority depends on your exact location: some areas follow the 2015 IRC, others enforce windstorm requirements, and some unincorporated parts of Harris County require very little. What never changes is physics. A window installed wrong will leak, sag, and cost you more in energy than you saved on the bid. We pull permits where required and build tight whether or not an inspector is coming.
Window Installers in Houston
Window installers in Houston earn their keep during the install itself, but the real skill shows in the prep and finish. We flash every opening to the wall, not just to the frame. We insulate the gap between the rough opening and the unit with low-expansion foam. We run a proper bead of exterior sealant and check the interior for gaps. In a Houston home, these steps aren’t cosmetic, they’re the difference between a window that lasts 20 years and one that leaks in 18 months. Our crews have installed hundreds of units across Houston, from third-floor units in Midtown condos to ground-level bedrooms in Friendswood, and we treat every opening like it’s our own house.
What a Proper Install Looks Like
We set the new unit level and plumb, shimmed correctly, with no stress on the frame. We replace any rotted wood in the rough opening instead of caulking over it. We follow the manufacturer’s installation instructions for the specific brand, because a PGT impact unit has different fastening requirements than a standard ECO Window Systems double-hung. Then we clean up, haul off the old window, and walk you through what we did.
Impact-Rated and Coastal Requirements
If you’re in Clear Lake, Seabrook, or any Houston-area zip code that falls within the windstorm zone, your install likely needs to meet Miami-Dade NOA standards. That changes the anchoring pattern, the fasteners, and the glazing. We carry impact-rated options on every truck alongside standard units, so we never have to tell a homeowner to wait a week while we order the right window. We stock what this market actually needs.
Trusted Brands We Service in Houston
We install windows from eight manufacturer lines, so the product matches the job instead of forcing the job to fit one brand. For Houston homeowners, that matters. We stock CWS and ECO Window Systems for energy-conscious replacements throughout the metro, and we carry impact-rated PGT and CGI units for coastal zip codes that demand Miami-Dade NOA certification. Our Houston inventory means we don’t wait on a distributor in Dallas when you need a specific size or a large-missile-rated unit. Owen Satterfield and the Houston team know these lines inside and out, and we’ll help you choose the right glass package for your exposure, your humidity concerns, and your budget.
Common Window Installation Problems We See in Houston Homes
- Unflashed aluminum frames from the 1970s-80s. These were installed fast and cheap during Houston’s suburban boom, and they wick water into the wall cavity after every heavy rain. By the time you see a stain on the sheetrock, the jamb and sill are usually rotted past patching, not just cosmetically wet.
- Single-pane windows with design pressure ratings far below current code. Once you pull a permit, an “easy swap” can turn into a framing and lintel upgrade. We see this constantly in Sharpstown and Meyerland, where the original units simply don’t meet what Harris County engineering now requires for wind loads.
- Seal failure from Houston’s humidity and heat cycling. Intense sun and muggy air eat through insulated glass seals. You’ll notice haze or condensation between the panes in windows only 10 to 15 years old. The fix is replacement, not repair, and we help you choose glass that holds up better.
- Rotted wood jambs in older Heights bungalows. Original wood double-hungs have charm, but decades of Houston moisture mean the jambs are often compromised. We can restore the units when the wood is sound or replace with a modern double-hung that keeps the look without the leaks.
Pricing for Window Installation in Houston, TX
A standard vinyl single or double hung replacement in Houston typically runs $450 to $850 per window installed. Casements and horizontal rollers land between $600 and $1,200. Picture windows run $500 to $1,400 depending on size and glass package. Impact-rated units from PGT or CGI add $300 to $700 per window over standard glass, and in windstorm zones that’s not optional. Bay and bow windows start around $3,500 and can reach $9,000 or more depending on the projection and seat work. What changes your price: the window line, the opening’s condition, the glass package, and your zip code’s code requirements. We’ve done full 20-window Houston homes for $14,000, and we’ve done single custom garden windows in Memorial for $4,200. The number you get from us is the number you pay, because it’s in writing before work starts.
Every quote includes a written price, a committed arrival window, and a written guarantee. We don’t revise at the door. Call (325) 326-4211 for your free estimate.
We Also Serve Cities Near Houston
Westlight Windows Houston serves the full metro, including Pasadena, Humble, Deer Park, and Friendswood. If you’re in one of those cities and want the same Window Installation in Houston standards we bring to every job, give us a call. Our crews dispatch from our Houston office, so response times stay tight across the area.
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 Window Installation in Houston
Because once you pull a permit, the rough opening must meet current code, not the code from when your house was built. In Houston, older single-pane windows often have design pressure ratings below what current Harris County engineering requires for wind loads. The inspector checks the framing, the lintel, and the flashing. If the original install was substandard, you’ll need to address it. We handle this by inspecting first, writing allowances into the contract, and getting your written approval before any surprise work starts. Call (325) 326-4211 for a free estimate and we’ll walk you through what your specific project will trigger.
Impact-rated means the window and its frame are tested to withstand windborne debris and pressure, typically to Miami-Dade NOA standards. For a Meyerland home that floods repeatedly and sits in a storm corridor, impact glass handles wind-driven rain and debris better than standard glass. It can also qualify you for a windstorm insurance discount, and we’ll email you the product approval after installation so you can submit it to your agent. Not every Meyerland home requires impact glazing by code, but many homeowners choose it for the insurance savings and the storm protection. Call (325) 326-4211 and we’ll tell you exactly what your home needs.
Because they were installed without flashing. The original aluminum frames were set into the rough opening with nothing but caulk and trim, and after 40-plus years of Houston storms, that seal is gone. Water wicks into the wall cavity, rots the jamb and sill, and eventually shows up as a stain on your interior sheetrock. The real fix is removal, rebuilding the rough opening, and flashing the new unit properly. Our crew did exactly that on a 1978 Sharpstown home last spring, and the homeowner hasn’t seen a drop since. Call (325) 326-4211 for a free assessment.
Impact glass handles the impact, not necessarily the energy performance, so you typically want both. Low-e is a thin coating that reflects heat back into the room in winter and out in summer, and it’s independent of impact rating. In Houston, a low-e coating on an impact-rated unit gives you storm protection and real energy savings through our humid, hot summers. We stock impact units with low-e from PGT and CGI, and energy-efficient packages from ECO Window Systems. Call (325) 326-4211 and we’ll show you the difference in the specs.
Check the jambs first. If the wood is sound, restoration is often the right call and it preserves the character of the house. If the jambs are rotted, the sashes sag, or the glass is single-pane with no weatherstripping, replacement usually makes more financial sense. Houston’s humidity is hard on old wood windows, and many Heights bungalows have units that simply can’t be made energy-efficient without rebuilding the frame. We restore when restoration makes sense and replace when it doesn’t, and we’ll show you the condition of every opening before we recommend either path. Call (325) 326-4211 for a free, no-pressure assessment.
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.