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 Window Replacement Across Nassau Bay
Window replacement in Nassau Bay runs $900 – $2,400 per window installed for most vinyl and aluminum units, with impact-rated models starting around $1,400. Sliding glass door replacement on older patio homes near Clear Lake typically lands between $3,800 and $7,500 depending on glazing and frame condition. If you’re calling from Nassau Bay, you’re likely dealing with a corroded aluminum frame, a fogged seal, or a sliding door that no longer closes square. We know those houses. We’ve worked on them since 2009. Call (325) 326-4211 and we’ll give you a written price before any work starts.
Why Westlight Windows Houston Is Nassau Bay’s Preferred Window Replacement Company
Nassau Bay homes are not like the rest of the Houston metro. The original single-pane aluminum windows in the 1960s and 1970s patio homes along Nassau Road and San Sebastian Lane have been fighting Gulf moisture for fifty years. We see pitted frames, frozen rollers, and glass seals that gave up long ago. Homeowners around Swan Lagoon and the Lakewood subdivision call us because we know what those original frames looked like and what they’ve become.
Owen Satterfield leads our Houston operation, and he’s particular about how a job gets measured, quoted, and finished. Every Nassau Bay customer gets a written price, a committed arrival window, and a written guarantee handed over at completion. Our technicians are background-checked and arrive in uniform. You’ll know exactly who’s walking through your door. When a Nassau Bay homeowner tells us a previous contractor no-showed or bumped the price at the door, we understand why they’re skeptical. That’s why the Kingswell Guarantee puts all four promises in writing on every single job: the price, the window, the clean site, and the guarantee.
Westlight is an independently owned and operated Kingswell location. We answer our phones with a live person 24 hours a day, seven days a week. No voicemail box, no chatbot. Call (325) 326-4211 and a human picks up.
Window Replacement Company in Nassau Bay
A Window Replacement Company doing work in Nassau Bay has to deal with two things most contractors in drier suburbs never face: salt-driven corrosion on aluminum frames and slab movement that pulls patio openings out of square. When we replace windows here, the job often starts with checking the rough opening with a level before we measure for the new unit. That’s the difference between a window that operates smoothly for twenty years and one that binds at the jamb within the first humid summer.
What a replacement involves in Nassau Bay: removing the old sash and frame, inspecting the rough opening for rot or settlement, correcting any out-of-square condition, installing the new unit with proper flashing and insulation, and sealing to keep Gulf-driven rain out. Most single-window replacements in Nassau Bay run $900 – $2,400 installed, and the work is typically completed in one day per opening.
Full Frame vs Insert Replacement
Full frame replacement means we remove everything down to the rough opening and install a complete new window with new trim. Insert replacement keeps your existing frame and fits a new sash inside it. For Nassau Bay homes with corroded original aluminum frames, full frame is usually the right call because the old frame is often the part that’s failing.
Vinyl Replacement Windows
Vinyl has become the standard for Nassau Bay replacements because it doesn’t corrode the way aluminum does in salt air. The frames won’t pit or oxidize, and the material handles the humidity swings without swelling. We install vinyl units from ECO Window Systems and Mr-Glass, both of which hold up well to bayfront exposure.
Window Glass Replacement in Nassau Bay
Window Glass Replacement in Nassau Bay usually means one of three things: a failed seal that’s fogged between the panes, a cracked impact-rated pane that took a hit, or an upgrade from single-pane glass to low-e insulated glass (a thin coating that reflects heat back into the room in winter and out in summer). The cost depends on the glass package. A standard insulated glass replacement in Nassau Bay runs $350 – $900 per sash, while impact-rated glass replacement starts around $600 and climbs based on size and laminate thickness.
We always inspect the frame before quoting glass only. If the frame is corroded or the opening has settled out of square, replacing just the glass will leave the same underlying problem in place. We’ll tell you that plainly. In some Nassau Bay patio homes, the smarter move is replacing the entire unit rather than paying for glass that will fail again in a frame that’s already compromised.
Energy-Efficient Glass Upgrades
Switching from original single-pane to low-e insulated glass cuts solar heat gain noticeably in August. In Nassau Bay, where the afternoon sun hits the west-facing windows over the water, that upgrade can drop cooling costs and make the room feel comfortable without cranking the thermostat. We install low-e packages from ECO Window Systems and CWS with the right coatings for our climate.
Impact-Rated Glass Replacement
If you have impact-rated windows that took a crack or lost a seal, the replacement glass must match the original rating to preserve your windstorm documentation. We replace impact-rated panes with the correct laminated glass and keep the paperwork consistent so your insurance file stays intact.
Trusted Brands We Service in Nassau Bay
We service and install CWS, ES Windows, ECO Window Systems, and Mr-Glass products across Nassau Bay, and we stock local parts for faster turnaround on common repairs. If you have an ES Windows sliding door that needs new rollers or a Mr-Glass vinyl window with a failed seal, we don’t have to order sight unseen and hope. Our technicians know these product lines, know which hardware they take, and know what the salt air does to each material over time. Matching the right brand to the job rather than forcing the job into one brand is part of how we work. For impact-rated projects in Nassau Bay’s wind zone, we commonly recommend PGT and CGI products, both of which we install and stand behind.
Common Window Replacement Problems We See in Nassau Bay Homes
- Sliding patio doors out of square. The expansive clay soils under Nassau Bay shift with moisture, and forty-year-old slabs don’t all move together. We regularly find slider openings that have dropped 1/2 to 3/4 inch at the strike side, which means the new door won’t seal or lock correctly until the opening is re-aligned.
- Corroded aluminum frames and hardware. Bayfront humidity and salt carry enough chloride to pit original aluminum window frames inside two decades. Screws seize, corners separate, and the thermal break fails. This is the most common reason full frame replacement beats an insert in older Nassau Bay patio homes.
- Failed seals on single-pane retrofits. Many Nassau Bay homes had single-pane units replaced in the 1990s and 2000s with early insulated glass. Those seals were never meant to last thirty years in Gulf moisture. Fogged glass between the panes is a daily call for us.
- Non-impact glazing in windborne debris zones. Some Nassau Bay homes still have standard annealed glass in openings facing the bay. When a storm throws debris, that glass fails, and the homeowner has no documented wind-load compliance for an insurance claim or premium credit.
Pricing for Window Replacement in Nassau Bay, TX
Here’s what we tell Nassau Bay homeowners up front. Standard vinyl insert windows run $900 – $1,700 installed per opening. Full frame replacement with new trim runs $1,200 – $2,400 installed. Impact-rated windows, which Nassau Bay’s wind zone effectively requires for full insurance credit, start around $1,400 and reach $2,800 for larger openings with laminated glass. Sliding glass doors on older patio homes run $3,800 – $7,500, with the high end reflecting impact-rated units and opening re-alignment work. The written price you get covers the complete job: permits pulled, installation, flashing, trim, and cleanup. You’ll never see a revised invoice at the door. Call (325) 326-4211 for a free estimate with line-item pricing.
We Also Serve Cities Near Nassau Bay
Our crews handle Window Replacement work throughout the bay area, and we regularly schedule jobs in Houston, The Woodlands, Sugar Land, and Humble. If you live near Nassau Bay but outside the immediate waterfront neighborhoods, we’ll come to you with the same written price and the same guarantee. Our Window Replacement in Nassau Bay service area covers the full Clearlake region.
Serving Nassau Bay, TX - Our Local Coverage Area
We’re based in the Nassau Bay 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 Replacement in Nassau Bay
Nassau Bay sits in a windborne debris region under Texas Department of Insurance requirements, which means replacement windows and doors in most openings must meet large-missile impact standards to qualify for windstorm insurance credits. Practically, that means impact-rated products carrying an impact certification, like the PGT and CGI units we install. A compliant quote includes the glass rating, the anchoring schedule, and the manufacturer documentation. A cheap quote that skips this leaves you with windows that fail the rating and no paperwork for your insurer.
Call (325) 326-4211 and we’ll walk you through which openings need what rating. Estimates are free and written.
If your slab has settled, the rough opening is no longer square, and any new window or door installed without correcting the opening will bind at the corners, wear out the jamb liners, and fail years early. In Nassau Bay, we regularly re-align slider openings that have dropped over half an inch before we measure for new units. We check every opening with a level and a tape before quoting so the written price reflects the real scope. Skipping this step is how homeowners end up with a door that never quite closed right from the day it was installed.
If your patio door sticks or the gap at the top is uneven, call (325) 326-4211. We’ll tell you what’s actually going on and what it costs to correct.
They can, but only if the installation is documented with a permit, a passed inspection, and the manufacturer’s impact-rating paperwork filed correctly. Insurers in Galveston County and the surrounding bay communities offer windstorm mitigation credits for documented impact-rated openings, and Texas law in many cases requires carriers to credit documented windstorm upgrades. The credit comes from the paperwork, not just the glass. A window installed without a permit and inspection doesn’t create the documentation trail an insurer needs, no matter how impact-rated the glass is.
We pull permits on every Nassau Bay job and hand you the full documentation package at completion. Call (325) 326-4211 to discuss your specific openings.
Yes. Nassau Bay requires a building permit for window and sliding door replacement, and the work must pass a city inspection before the job is closed. The inspection confirms the installation meets the adopted building code, including wind-load anchoring and flashing details. We pull the permit, schedule the inspection, and meet the inspector on site. You get the final inspection record along with the manufacturer’s documentation. If a contractor tells you a permit isn’t needed, that’s a red flag worth walking away from.
For a quote that includes permit fees and inspection scheduling, call (325) 326-4211.
Nassau Bay sits directly on Galveston Bay’s shoreline, where the air carries a persistent chloride load that inland Houston neighborhoods don’t get. That salt and humidity combination attacks the thin anodized finish on original aluminum frames, and once the finish goes, the aluminum beneath oxidizes and pits. Houston’s urban corridor gets heat and humidity, but far less salt. If you live within a few blocks of the water in Nassau Bay, your aluminum frames are aging faster than the same windows twenty miles inland. That’s why we install vinyl and impact-rated composite frames more often than aluminum in waterfront sections.
Want to know if your frames are corroding or just dirty? Call (325) 326-4211 and we’ll take a look at what you’ve got.
Written by Owen Satterfield, Owner at Westlight Windows Houston, serving Nassau Bay 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.