Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows & Doors Across Largo
Most impact window and door replacements in Largo run between $900 and $2,800 per opening installed, depending on the product line and whether your home is wood-frame or CBS concrete block. If you’re calling us from a 1950s-to-1970s ranch near Keene Park or off East Bay Drive, you’re likely facing original jalousie windows that no longer satisfy a Florida wind-borne debris inspection, and your insurer has probably told you so in writing. We serve all of Largo, from the neighborhoods around Largo Central Park to the retirement communities west of US 19, and we quote the work the same way every time: on paper, side by side, with both warranty layers registered before our truck leaves your driveway. Call (813) 320-9346 for a free estimate, and a person will answer.
Key takeaways for Largo homeowners:
- Impact-rated windows and doors are effectively mandatory across Largo because the entire city sits inside Pinellas County’s Wind-Borne Debris Region, with design wind speeds near 150 mph.
- Replacing original jalousie windows in a concrete-block home usually means cutting and patching masonry, not just swapping sashes. That changes the labor cost and the crew you want on the job.
- Gulf salt air eats non-marine-grade aluminum hardware faster than most homeowners expect. If your frames are pitted or your sliding door binds every summer, that’s the corrosion talking.
- Every TruePane job carries the 90-Day Done Right Promise and The Keystone Standard. Both manufacturer warranty layers get registered in writing, with durations stated, before we leave.
Why TruePane Windows & Doors Is Largo’s Preferred Impact Windows & Doors Company
Dale Kessler founded TruePane in 2008 after watching too many Pinellas County homeowners get stuck with out-of-true installs and warranties that vanished the moment a problem showed up. The rule on his whiteboard has not changed since day one: if the pane is not true, the job is not done. That standard matters in Largo specifically, because the city’s housing stock demands a skill set most window crews never learn. Cutting a 1963 CBS rough opening to accept a modern impact-rated frame is masonry work first and window work second. We do both in-house, with background-checked, uniformed technicians who measure every opening twice and quote manufacturer lines side by side on paper.
We have spent years working in Largo’s ranch-home neighborhoods and 55+ communities, and our local reputation follows from that. Homeowners in Keene Park, Harbor Bluffs, and along Ulmerton Road call us because their neighbor got a square deal and a written warranty registration, not a promise that evaporated after the check cleared. Our Impact Windows & Doors team handles the full scope: impact-rated window replacement, sliding glass doors, entry and French doors, and the wind mitigation paperwork that gets you the insurance credit you’re owed. Dispatch and scheduling are coordinated from our South Florida office, and our crews serve Largo locally, so you’re never waiting on a crew from two counties away.
We hire local, train apprentices into journeymen, and act like a company that plans to be in Largo in thirty years. We sponsor county fairs and church roof funds because we expect to still be here when your grandchildren inherit the house. A live person answers every call, 24 hours a day, seven days a week. Not a voicemail tree. Not a regional call center. You call, a person picks up, and you get answers. Reach us at (813) 320-9346.
Our Impact Windows & Doors Services in Largo
Hurricane Impact Windows
Impact windows in Largo are not a luxury upgrade. They’re the difference between keeping your policy and losing it. Most Largo ranch homes built between 1950 and 1975 still carry original jalousie or single-pane aluminum windows, and Citizens Insurance has made plain that those openings will not pass renewal scrutiny. We replace them with impact-rated units from PGT, CGI, and Simonton, sized to your existing openings or into freshly cut masonry openings when standard sizes won’t fit. Every unit carries a Florida Product Approval number, which your insurer will ask for in writing.

Impact Sliding Glass Doors
A sliding glass door facing the Gulf breeze is the most common point of water intrusion we see in Largo homes. The combination of salt air and heavy afternoon rain finds every failed weatherstrip and every corroded roller track. We install impact-rated sliding doors with stainless steel hardware and marine-grade weatherstripping, built for the Pinellas County environment rather than a showroom in Orlando. We also repair and re-tune existing sliders when the frame is sound and the problem is corrosion in the rollers or a sagging panel.

Impact Entry & French Doors
Entry doors on older Largo CBS homes often sit in a masonry opening cut for a door size nobody manufactures anymore. We fabricate custom bucks and install impact-rated entry and French doors that close square, seal tight, and stand up to a debris test. We’ve replaced enough rusted hinges and seized deadbolts in this city to know that marine-grade hardware is not optional here. It’s the difference between a door that works for five years and one that binds the first July after install.

Impact Garage Doors
A garage door is the largest opening in most Largo ranch homes, and a non-impact-rated door is a hole in your wind envelope during a storm. Once the garage door goes, the roof follows. We install and reinforce impact-rated garage doors sized to the single- and double-bay garages common in Largo’s 1960s and 1970s subdivisions, and we walk you through the wind mitigation credit paperwork on the same visit.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Largo
We install impact windows and doors from PGT, CGI, and Simonton, and we service units from Ply Gem and other major manufacturers as well. We do not push a single line. Dale’s rule is that you see quotes for two or three manufacturer lines side by side on paper, so you know exactly what you’re buying and what each warranty actually covers. For Largo customers, we keep stock of common impact glass sizes, door rollers, and corrosion-resistant hardware locally, which means faster turnaround on repairs and fewer repeat visits. If you need a fogged impact window assessed or a sliding door re-tuned, call (813) 320-9346 and we’ll come measure, quote, and if the job is small, finish it the same visit.
Common Impact Windows & Doors Problems We See in Largo Homes
- Jalousie window channel leaks. The original louvered-glass windows in Largo’s CBS ranch homes have zero resistance to wind-driven rain. Water enters the channels, runs down the interior wall, and rots drywall and baseboards before you notice the stain. The fix is full replacement into the masonry opening, with butyl flashing at the jambs.
- Aluminum frame corrosion from Gulf salt air. Largo sits five to seven miles from the Gulf, and that salt air is relentless. Non-marine-grade aluminum frames pit, oxidize, and eventually seize. We regularly pull windows in Harbor Bluffs and along Indian Rocks Road where the sash hardware has fused from corrosion.
- Failed wind-borne debris inspections. Unpermitted or unapproved window replacements fail Pinellas County inspections, and then the homeowner pays twice: once for the original work and again to tear it out and redo it properly. We pull permits on every install and our units carry Florida Product Approval numbers registered in writing.
- Fogged double-pane impact glass. When the seal fails between panes in an impact window, the condensation is inside the glass and no cleaning will fix it. In Largo’s humidity, failed seals are common on windows older than fifteen years. We assess whether the sash can be replaced under warranty or whether a full replacement is the honest call.
Pricing for Impact Windows & Doors in Largo, FL
Straight numbers, because you should not have to guess. A standard impact-rated vinyl single-hung or double-hung window in Largo, installed into an existing wood-frame or already-sized CBS opening, typically runs $900 to $1,800 per unit. Impact sliding glass doors run $2,200 to $5,500 installed, depending on width and product line. When we have to cut and patch concrete block to resize an opening, which is common on Largo’s 1950s-to-1970s ranch homes, add $300 to $900 per opening in masonry labor and finishing. Impact entry doors start around $2,000 and run to $5,000 for custom sizes with sidelights.
| Item | Typical Installed Range in Largo |
|---|---|
| Impact vinyl window (standard size, wood-frame or prepped CBS) | $900 - $1,800 per unit |
| Impact window with masonry opening cut and patched | $1,200 - $2,700 per unit |
| Impact sliding glass door (6 ft) | $2,200 - $4,200 |
| Impact sliding glass door (8-12 ft) | $3,500 - $5,500 |
| Impact entry door (single, no sidelight) | $2,000 - $3,800 |
| Impact entry door with sidelights (custom) | $3,200 - $5,000 |
| Wind mitigation inspection and report | $125 - $250 |
These are honest ranges for Largo’s market, not teaser prices. The biggest cost variable is your home’s construction type. CBS concrete block openings are slower to modify than wood-frame, and that labor is where cut-rate crews either underbid and then surprise you with a change order, or skip the masonry work entirely and leave you with a window that is not true. We give you a written line-item quote before work starts, and the price does not change unless you change the scope. We also honor a permanent 5% discount for seniors and veterans in Largo, plus a free written repair estimate. Call (813) 320-9346 and we’ll come measure, on paper, for free.
The Masonry Reality Behind Jalousie Replacement in Largo
Here’s the part most Florida window pages will not tell you. In Largo, replacing original jalousie windows in 1950s-to-1970s CBS ranch homes typically requires cutting and patching concrete block to fit modern impact-rated standard sizes. The original jalousie openings were rarely framed to today’s dimensions, so you cannot simply pull the louvered glass and slide in a new impact window. You have to cut block, set a pressure-treated buck, anchor it with masonry fasteners, flash it, and then patch stucco to match. That is a masonry skill set absent from most cut-rate crews. We do this work regularly, and we have the dust on our boots to prove it.
Our crew just finished a full jalousie-to-impact conversion on a 1963 CBS ranch in the Keene Park neighborhood. The original louvered windows had single-pane glass, corroded aluminum frames from decades of Gulf salt air, and multiple seal failures. We cut the masonry openings to accept custom-fabricated bucks, installed impact double-hung units with low-E glass and argon fill, and flashed the jambs with butyl tape before stucco patching. The new windows seal, operate, and carry Florida Product Approval numbers registered with the owner’s insurer before we pulled out of the driveway. That is the job, done right.
Wind Mitigation & Code Compliance in Largo
Pinellas County sits entirely inside the Wind-Borne Debris Region, and Largo is no exception. Ultimate design wind speeds here approach 150 mph. What that means for you: every window and door we install in Largo must carry a Florida Product Approval number, and your wind mitigation report needs to reflect what is actually in the openings. We handle the compliance side because we’ve seen too many Largo homeowners buy windows that were sold as impact-rated but were never approved, and the inspector flags them during a re-roof or a sale. We pull permits, schedule inspections, and register both warranty layers in writing before the truck leaves. It’s the same discipline we bring to the install itself: if the pane is not true, the job is not done.
We Also Serve Cities Near Largo
Our Impact Windows & Doors in Largo crews, work across Pinellas County every week. We serve Belleair Beach, Indian Rocks Beach, Clearwater, and Seminole, with the same pricing, the same written warranty registration, and the same live person answering the phone. If you’re in one of those cities and facing a jalousie replacement, a failed slider, or an insurance non-renewal letter, call (813) 320-9346. We’ll measure, quote, and put it in writing.
Serving Largo, FL - Our Local Coverage Area
We’re based in the Largo 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 - Impact Windows & Doors in Largo
Yes, from a code standpoint, all of Largo sits inside the Wind-Borne Debris Region, so any new or replacement window must be impact-rated or protected by an approved shutter system. The requirement is not about your distance from the Gulf; it’s about the design wind speed for Pinellas County, which approaches 150 mph. Even if your insurer hasn’t required it yet, a re-roof or a sale will flag non-compliant openings. Call (813) 320-9346 and we’ll assess what your home actually needs and what your insurer will accept.
Yes, in some cases you can, and we’ll tell you honestly when shutters are a viable alternative. Shutters can satisfy the wind-borne debris requirement if they meet current Florida Building Code standards and are installed over compliant openings. But the original jalousies underneath still leak, still corrode, and still offer zero insulation. Most Largo homeowners replace them eventually, and the insurance credit on impact-rated glazing usually beats the shutter credit. We’ll price both options side by side on paper, and you decide with real numbers in front of you.
Plan on $300 to $900 per opening in additional labor when we need to cut and patch concrete block to accept a modern impact-rated frame. The exact number depends on the opening size, the block condition, and whether we’re also addressing water intrusion behind the stucco. This is not a corner we cut, because a jalousie replacement that skips proper bucking and flashing will leak and fail inspection. Call (813) 320-9346 for an exact quote after we measure; estimates are free and the line items are written in plain English.
The payoff is lower cooling bills from May through October, which is most of the year here, plus a wind mitigation insurance credit you can take to your carrier as soon as the inspection passes. Impact-rated low-E windows cut solar heat gain substantially compared to single-pane jalousies, and in a 1,500-square-foot CBS ranch in Largo, the difference in your AC runtime is real. Most homeowners we work with in Largo report the energy savings are noticeable within the first full summer. We’ll show you the U-factor and SHGC on every quote, because those are the numbers that matter, not the brochure headline.
Not necessarily. The fogging means the insulated glass unit’s seal has failed, and in many cases we can replace just the glass unit, not the entire frame, if the frame is square and sound. If the window is under warranty, we’ll file the claim and handle the manufacturer paperwork for you. If it’s out of warranty, a glass-unit replacement typically costs less than half of a full window replacement. In Largo’s humidity, failed seals are a common problem after fifteen years or so, and the earlier we catch it, the cheaper the fix. Call (813) 320-9346 and we’ll send a uniformed technician to assess the window on site.
Call TruePane for a Free Estimate in Largo
If you live in Largo and your jalousie windows are fogged, your sliding door binds in the humidity, or your insurer sent you a non-renewal letter, call (813) 320-9346. A live person answers, every time. We’ll schedule a free estimate, measure every opening twice, and hand you a written line-item quote with manufacturer lines side by side, warranty durations stated, and no surprises on the bill. Dale Kessler founded this company on a simple rule: if the pane is not true, the job is not done. We’ll be there when we say, and we’ll stand behind the work in writing.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Largo and all of Pinellas County.
Six Reasons Homeowners Choose TruePane Windows & Doors
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.



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