Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Friendswood
Window installation in Friendswood, TX typically runs between $550 and $1,450 per window for a standard retrofit, and $850 to $2,100 per opening for a full-frame replacement that includes new trim, flashing, and exterior sealing. In the Galveston County sections of Friendswood, the real question is not just price. It’s whether the units you’re buying carry a DP (design pressure) rating high enough to pass the mandatory TDI windstorm inspection. We’ve worked on hundreds of Friendswood homes from 77546 to 77549, and we know which units clear that bar and which ones fail it. Call (888) 635-0804 for a square-deal estimate, backed by our Done Right Promise.
Key Takeaways for Friendswood Homeowners:
- Galveston County Friendswood window replacements require a TDI windstorm inspection. Harris County Friendswood does not.
- Windows in the TWIA zone need a DP rating built for 130+ mph wind pressures, not just any standard unit.
- Salt-laden Gulf air eats aluminum frames and hardware faster here than 5 miles inland.
- Our quotes include permitting, flashing, and inspection scheduling. The price we give is the price you pay.
Why TruePane Windows & Doors Is Friendswood’s Preferred Window Installation Company
We are not the cheapest bid in Friendswood, and we do not pretend to be. We’re the company that shows up in uniform, measures every opening twice, and registers both warranty layers in writing before our truck leaves your driveway. That’s The Keystone Standard, and it has been our rule since Dale Kessler founded this company in 2008 to fix exactly the kind of out-of-true installs and voided warranties that plague older homes in this area. Friendswood homeowners call us because they’ve lived in their houses for twenty or thirty years, they notice when a sash binds or a seal fails, and they want it done right the first time. Not patched. Done right.
Our crews serve Friendswood directly. Dispatch runs from our Houston office, but the technicians who drive out to your home know the difference between a 1970s brick-veneer ranch in 77546 and a post-Harvey rebuild in 77549. They know which side of the county line you’re on, because it changes what the code requires of your window installation. They know what a TDI inspector looks for. And they know that a live person answers our phones 24/7, not a callback form. If something goes wrong, you call and a person picks up. That’s been true since 2008 of combined service tradition, and it stays true on every Friendswood job we take.
- Done Right Promise: If the install is not right, we make it right. No paperwork fights. No fine print. No arguing.
- The Keystone Standard: Both manufacturer warranty layers registered in writing, with durations stated, before we leave the driveway.
- Background-checked, uniformed technicians on every job, treating your home the way they’d treat their own mother’s.
- Authorized installer for more than a dozen manufacturer lines, including Andersen, Pella, Marvin, Milgard, PGT, and CGI.
Our Window Installation Services in Friendswood
Here’s the thing most window companies in Friendswood won’t tell you straight: if your home sits in the Galveston County portion of Friendswood, the window unit you buy matters just as much as how it’s installed. A standard big-box replacement window with no DP rating will fail a TDI windstorm inspection the first time it’s checked. That means no TWIA coverage for that opening, and it means redoing the job. We don’t sell you a job we know will fail. We sell you the unit that passes.
Casement Windows
Casement windows are the workhorse in Friendswood’s wind-exposed neighborhoods west of Friendswood Drive and up past Forest Bend. The crank mechanism lets the sash compress hard against the weatherstripping, and that compression is what keeps wind-driven rain out during a Gulf storm. Many of the original 1970s and 1980s casements in Friendswood have worn crank operators and warped frames from our 80-90% humidity. Replacing them with Impact Windows & Doors - Friendswood style casement windows with low-E glass and argon fill is the most common upgrade we do in 77546. A typical Friendswood casement replacement runs $650-$1,150 per opening depending on size and glazing.

Fixed & Picture Windows
Fixed windows dominate the front elevations of the brick-veneer two-stories across Friendswood. They’re supposed to be the low-maintenance choice. But the original ones in this housing stock often carry single-pane glass and hollow aluminum frames that have corroded badly after decades of salt-laden Gulf breezes off the bay. The seals fail, the glass fogs, and the frame starts to pit. A compliant replacement in Galveston County requires a fixed window with a DP rating sufficient for 130+ mph wind loads. That’s a product most standard window companies don’t stock, and many Friendswood homeowners don’t know to ask for. A fixed or picture window replacement in Friendswood typically runs $500-$950 per unit.

Awning Windows
Awning windows work well for the low-profile, punch-out openings you see in ranch homes throughout Friendswood’s older neighborhoods near Stevenson Park and along FM 528. They hinge at the top and open outward, which lets them shed rain even when slightly open during a heavy downpour. That’s useful in a town that gets sudden Gulf thunderstorms. But the original awning units in 1970s Friendswood homes often have operator arms that snap under wind load or frames that have warped from heat and humidity cycles. We replace them with modern awning windows built with reinforced operators and rated glazing for the windstorm zone. Expect $550-$1,000 per awning opening in Friendswood.

Single & Double Hung
Single-hung and double-hung windows are the classic opening style in Friendswood’s battery of 1970s-1990s suburban homes. The problem isn’t the style. It’s that the originals are mostly aluminum single-pane units with no thermal break and no windstorm certification worth the paper it’s printed on. They’re drafty, they sweat, and in the Galveston County section, they will not clear a TDI inspection. We install single and double hung replacements with impact-rated glazing, positive-locking hardware, and proper flashing integration into the brick veneer. A typical Friendswood single-hung replacement runs $600-$1,300 depending on size and glass package.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Friendswood
TruePane is an authorized installer for CGI, CWS, and ES Windows, among a dozen-plus manufacturer lines. In Friendswood, that matters because these are brands whose engineers design glazing assemblies for high-wind coastal markets, not catalog units stamped out for Minnesota or Arizona. CGI’s impact-rated casement lines are a frequent pick for Friendswood homes in the TWIA zone because they’re engineered, tested, and documented for wind-borne debris protections. We stock common gaskets, balances, latches, and weatherstripping for these brands so Friendswood homeowners aren’t waiting three weeks on a backordered part for a window that won’t close. Window Installation in this climate is a long-term decision, and we quote manufacturer lines side by side on paper so you can see exactly what each unit gets you before you spend a dollar.
Common Window Installation Problems We See in Friendswood Homes
- Unrated big-box windows in the TWIA zone. A homeowner buys units off the shelf, has them installed, and then learns the Galveston County permit triggered a TDI windstorm inspection. The units carry no DP rating, the inspection fails, and TWIA coverage is blocked until compliant windows go in. We see this at least once a month in Friendswood.
- Aluminum frame corrosion from salt air. Friendswood sits 15-20 miles from Galveston Bay, close enough that persistent salt-laden Gulf breezes work their way into window jambs and hardware. Original 1980s aluminum frames pit, bind, and eventually fail. That’s why we specify corrosion-resistant hardware and non-metallic glazing beads on coastal-facing elevations.
- Flashing failures against brick veneer. Many older Friendswood homes have brick-veneer exteriors. If a window installer skips the flashing tape or integrates the new window poorly with the veneer, moisture pushes in during our 80-90% humidity cycles and the wall cavity rots from the inside. We flash every jamb, sill, and head on every install, no exceptions, and we document it in writing.
- Mismatched post-Harvey rebuild fenestration. Hurricane Harvey’s 2017 flooding triggered a major rebuild cycle in Friendswood. We regularly find homes where a few windows were replaced after Harvey with whatever units a contractor could source quickly, while the rest remain original 1980s aluminum. The result is a mix of certification statuses, so a TDI inspection might pass one opening and flag the one next to it. Our quotes account for making the whole elevation compliant, not just the one window that failed visibly.
Pricing for Window Installation in Friendswood, TX
A retrofit window installation in Friendswood runs $550 to $1,450 per opening for Energy-Efficient Windows - Friendswood style double-pane, low-E units. Full-frame replacement, which includes removing the old jambs, replacing any rotted framing, flashing the opening, and re-trimming both sides, runs $850 to $2,100 per opening. These ranges cover both Harris County and Galveston County sides of town. What moves the price is straightforward: the size of the opening, the glass package, and whether the window needs a DP rating for the TWIA zone. A Galveston County compliant casement will cost more than a standard unit because it’s built and rated differently. It also protects your TWIA coverage, and that’s not a premium. That’s the baseline for doing the job in this part of Friendswood. Every estimate is free, written, and itemized. We measure every opening twice before we quote. The number we give is the number you pay, and we put that in writing with no lines that surprise you later.
We Also Serve Cities Near Friendswood
TruePane installs Window Installation work all around the southeast Harris and northern Galveston County corridor. We send crews to Pearland, Pasadena, Deer Park, and La Porte on the same dispatch schedule that serves Friendswood. If you’re just across the county line or a few miles up FM 2351, call us. The standards don’t change when the city limit does.
Serving Friendswood, TX - Our Local Coverage Area
We’re based in the Friendswood 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 - Window Installation in Friendswood
Yes. If your Friendswood home lies within the Galveston County portion of the city, pulling a window or door replacement permit triggers a mandatory Texas Department of Insurance (TDI) windstorm inspection. The inspector verifies that your new window assemblies meet the design-pressure requirements for 130+ mph wind loads under TWIA rules. If your installer didn’t source rated units, the inspection fails and your TWIA coverage remains blocked until compliant windows go in. We schedule and coordinate this inspection as part of every Galveston County Friendswood install, and our units are specified to pass it. Call (888) 635-0804 and we’ll tell you which side of the county line your lot falls on and exactly what that means for your job.
Windows in Friendswood’s TWIA zone must meet the design-pressure ratings specified in the International Residential Code for a 130 mph wind-speed region, which generally means DP50 or higher for most residential openings, with some larger fixed-glass spans requiring DP60 or above. The exact rating depends on the opening size, the height above grade, and the elevation’s exposure. We calculate that per opening from the permit drawings. The short version is that a stock window without a printed DP rating will get flagged. Call (888) 635-0804 for a free quote and we’ll show you the rating calculation on paper.
A compliant installation gives you documentation. Both warranty layers are registered in writing, and the TDI inspection generates a paper trail that proves your windows met the windstorm code at the time of installation. If a hurricane hits and your windows fail, that documentation is what gets your claim processed without a fight over whether the fenestration was ever compliant. If you skip the inspection or install uncertified units, TWIA can deny the claim outright. We hand our Friendswood customers a full paper package after every Galveston County install: manufacturer warranties, installation photos, TDI inspection results. That’s the protection you’re paying for. Call (888) 635-0804 and ask us to walk your elevation through what TWIA will want to see.
Friendswood sits closer to Galveston Bay than Pearland or Sugar Land, close enough that the prevailing Gulf breeze carries salt at levels several times higher than 10 miles inland. Over time, that salt works into the aluminum frame junctions and pitting starts. Once the frame pits, the corners weaken, the sash binds, and the seals begin to fail. Aluminum windows in Friendswood typically reach visible corrosion within 15-20 years, whereas the same unit in Sugar Land might last another decade. We recommend aluminum-clad or non-corroding frame materials for coastal-facing elevations in Friendswood. Call (888) 635-0804 and we’ll tell you what we’re seeing on homes in your immediate neighborhood.
No, in nearly every case. The original 1970s and early 1980s frames in Friendswood’s core housing stock are aluminum assemblies that were never designed or tested for 130+ mph wind loads, so even if you could retrofit impact-rated glass into the old sashes, the frame junctions and hardware would still fail under design pressure. Any retrofit that keeps the original frames in Galveston County will not pass a TDI windstorm inspection, which means your TWIA coverage stays blocked. The old frame has to come out and a rated, integrated assembly must go in. That’s exactly the kind of job our crews do all over 77546 and 77549. Call (888) 635-0804 and we’ll give you a straight answer and a free written estimate.
A Friendswood Job We Recently Completed
Our crew recently replaced original 1980s aluminum single-hung windows on a brick-veneer ranch off Winding Way Drive in Friendswood’s 77546 ZIP. The old sashes had corroded from salt-laden Gulf breezes, with multiple seal failures fogging the insulated glass units. The homeowners had put off the work because they’d heard the TDI inspection process was a headache. We swapped the old units for impact-rated casement windows with low-E glass and argon fill. We installed flashing tape at every jamb and sealed the brick veneer integration with backer rod and sealant, the way it should always be done. Then we scheduled the mandatory TDI windstorm inspection, passed it the first time, and handed the homeowner a folder with both warranty layers registered in writing and the inspection sign-off. If the pane is not true, the job is not done. That’s the rule we work by off Winding Way Drive, and it’s the rule we’d work by at your house too.
Call TruePane for Window Installation in Friendswood, TX
If your windows fog, bind, leak, or draft, and you know you’re not moving out of this house in the next five years, let’s talk. A live person answers our phones 24/7. We’ll send a background-checked, uniformed technician to measure every opening twice, show you manufacturer lines side by side on paper, and hand you a written quote with no surprise line items. Seniors and veterans get a permanent 5% discount on every job. Call (888) 635-0804 to schedule your free estimate, and we’ll see you when we say.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Friendswood and the surrounding southeast Harris and northern Galveston County corridor since 2008.



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