Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Largo
Window replacement in Largo usually runs between $550 and $1,400 per opening for a standard insert, and $900 to $2,200 per opening when the original frame has to come out because of jalousie construction or salt-air rot. Most Largo homes we see are 1960s to 1980s concrete block ranches, and a surprising number still have the original single-pane aluminum or louvered windows the builder put in. Those windows were never designed for Pinellas County wind loads, and after forty or fifty years of Gulf salt air, many of them are beyond saving. We’ve been doing this work long enough to know what a Largo home actually needs: marine-grade hardware, Florida Product Approved glass, and a contractor who pulls the permit. Call (954) 280-4413 for a free estimate.
Why TruePane Windows & Doors Is Largo’s Preferred Window Replacement Company
We’re not the cheapest bid in Largo, and we don’t try to be. We’re the company that writes both warranty layers down on paper before the truck leaves your driveway. That’s the Keystone Standard, and it matters more here than almost anywhere else in Florida. Salt air from the Gulf eats aluminum frames. Window companies that don’t understand Largo will sell you a lovely new window with standard hardware, and in four years the latch sticks and the sash won’t slide. We specify marine-grade finishes and stainless hardware on every job within five miles of the coast.
Our crews have worked on ranches off East Bay Drive, in the manufactured home communities along Ulmerton Road, and on acreage lots out toward the county line near Walsingham Road and Wilcox Road. We know which jobs trigger county inspections and which ones don’t. We know that a 1974 CBS ranch with original jalousies is never a simple sash swap, no matter what the homeowner was told on the phone by someone reading from a national call-center script. And we answer the phone with a live person, every hour of every day. That’s Dale Kessler’s rule, and it has been since he founded TruePane in 2008 on a simple principle: if the pane is not true, the job is not done.
TruePane is part of the Window Replacement team that registers every manufacturer warranty in writing, states the durations, and stands behind the workmanship for 90 days with the Done Right Promise. No paperwork fights. No arguing. If it isn’t done right, we make it right.
Our Window Replacement Services in Largo
Full Frame Replacement
This is the service Largo needs more than any other. When the original window is a jalousie or a corroded aluminum slider, you cannot retrofit it. The entire frame, the sill, the buck, and the flange all come out, and we set a new window into the rough opening with flashing tape, a sill pan, and stainless steel anchors. Pinellas County wind speeds under the Florida Building Code typically run 130 mph or higher, and inspectors enforce Florida Product Approval numbers on every permit pull. A full frame replacement is the only way to get an old Largo ranch house to code, and it’s the only route to a Citizens Property Insurance wind mitigation credit.

Insert Window Replacement
If your Largo home has wood frames or later-model aluminum frames that are still square and sound, an insert (sometimes called a pocket replacement) fits a new window into the existing frame. It costs less than a full tear-out, and it goes faster. The catch is that about half the insert jobs we quote in Largo turn into full frame work once we remove the old sash and see what the salt air did to the inside of the frame. We measure every opening twice, and we’ll never quote you an insert in writing until we’ve verified the frame will hold.

Storm Window Replacement
Storm windows in Largo typically fall into two camps. First, the old removable storm panes that cover original wood windows on some of the older homes near Highland Avenue and the neighborhoods around Largo Central Park. Second, the real reason people call us: they want impact-rated glazing that replaces the need for storm shutters entirely. A properly installed impact window meets Florida Building Code and eliminates the plywood-and-prayer routine when a hurricane enters the Gulf. We install CGI, ES Windows, CWS, and ECO Window Systems impact lines, quoted side by side on paper.

Energy-Efficient Upgrade
Largo homeowners who run air conditioning ten months out of the year feel it in the electric bill when ten original single-pane windows are leaking cold air into the yard. Upgrading to double-pane, low-E insulated glass with thermally broken frames cuts that loss immediately. The energy savings matter, but in Largo the bigger payoff is usually the insurance reduction. Pinellas County homeowners who install Florida Building Code-compliant impact windows and doors are eligible for premium discounts through Citizens Property Insurance, and in a salt-air market where wind mitigation credits apply, the windows can pay for themselves faster than a generic energy retrofit would.

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 Largo
We install and service more than a dozen manufacturer lines, and in Largo we lean heavily on impact products from ES Windows, CGI, and ECO Window Systems because they hold Florida Product Approval and they’re built for marine environments. We’re an authorized installer, which means the warranty is real: both layers registered in writing, durations stated, before the truck leaves the driveway. If you already have Andersen, Pella, Marvin, or PGT windows and something has failed, we service those too, and our local parts access means we’re not waiting on a shipping container from the Midwest to finish your job. That’s what being a local Largo window contractor actually means: the parts, the paperwork, and the people who stand behind both.
Common Window Replacement Problems We See in Largo Homes
- Jalousie windows quoted for repair. We see this at least once a month. A homeowner is told the jalousies can be “rebuilt” or “retrofitted” and charged for the attempt. Jalousie louvers cannot meet FBC wind-load requirements. The building department will not pass them, the insurance company will not credit them, and the money is gone. Jalousies are a full tear-out-and-replace job by definition.
- Salt-air corrosion on aluminum frames and hardware. Homes within a few miles of Indian Rocks Beach and Indian Shores get persistent salt spray. We regularly replace sashes where the aluminum is so pitted you can see daylight through holes in the frame. The fix is marine-grade finishes and stainless steel hardware on every coastal job.
- Seal failure and cloudy insulated glass units. Original double-pane windows from the 1980s fail after twenty or thirty years in the Florida sun. If the glass looks foggy and the fog will not wipe away, the seal is gone and the unit has to be replaced. On a 1972 ranch off East Bay Drive, our crew pulled seven corroded jalousies where two had already lost their seals and were permanently clouded.
- Equipment staging damage on acreage lots. Largo’s larger lots, especially east of Belcher Road and near the county line, often have septic tanks and wells that are easy to miss if you don’t pull the property survey before staging a dumpster or a lift. We mark every underground system before we drop equipment, because a cracked septic line is not a problem a window contractor wants to add to your job.
Pricing for Window Replacement in Largo, FL
In Largo, a basic insert window replacement runs $550 to $1,400 per opening, depending on size, glass package, and whether the existing frame is sound. Full frame replacement on a jalousie or corroded aluminum window typically lands between $900 and $2,200 per opening, because the entire unit comes out and the new window gets new flashing, a sill pan, and structural anchors. Impact-rated windows from CGI, ES Windows, or ECO Window Systems add anywhere from $300 to $900 per opening depending on the size of the opening, the DP rating, and the glass type. A whole-house job on a three-bedroom Largo ranch with ten windows and a sliding door commonly comes in between $11,000 and $22,000. We write the quote line by line, side by side on paper, and the number we give you is the number on the invoice. No surprise line items.
Key Takeaways
- Largo’s 1960s-1980s concrete block ranch homes often need full frame replacement, not inserts, because jalousies cannot be retrofitted to meet FBC wind loads.
- Persistent Gulf salt spray means marine-grade finishes and stainless hardware are a practical requirement within five miles of the coast.
- Citizens Property Insurance wind mitigation credits can materially offset the cost of impact-rated replacement windows in Pinellas County.
- TruePane registers both warranty layers in writing and stands behind every job with a Done Right Promise.
- Call (954) 280-4413 for a free, line-item estimate tailored to your Largo home.
We Also Serve Cities Near Largo
Our crews work throughout central Pinellas County. In addition to Largo, we regularly serve homeowners in Belleair Beach, Indian Rocks Beach, Clearwater, and Seminole. Coastal salt-air requirements vary by neighborhood, so we always confirm your exact location when quoting a job. If you’re just over the line in any of these cities, the same live person answers the phone, and you’ll get the same Done Right Promise.
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 - Window Replacement in Largo
No. Impact film cannot bring a jalousie louvered window into compliance with Florida Building Code wind-load requirements, and Pinellas County inspectors will not pass a film application on a jalousie as a code-compliant window. Jalousies are by definition a full tear-out-and-replace job. We’ll quote the replacement honestly, and we’ll quote the manufacturer lines side by side so you see exactly what you’re buying.
Yes. Any window replacement in Largo requires a permit when the opening is altered, and full frame replacement always requires one. Pinellas County enforces Florida Product Approval numbers on every permitted window, and the inspector will check them. We pull the permit, schedule the inspection, and make sure the job passes before we consider it done. Call (954) 280-4413 and we’ll scope it properly before we quote.
Yes. Gulf salt spray corrodes standard aluminum frames measurably faster than the same product performs fifteen miles inland. We specify marine-grade finishes and stainless steel hardware for any Largo home within five miles of the coast, and we run side-by-side quotes on CGI, ES Windows, and other impact-rated lines that are built for exactly this environment.
Yes, in most cases. Pinellas County homeowners who replace old jalousie or single-pane aluminum windows with Florida Building Code-compliant impact-rated windows and doors are eligible for wind mitigation credits through Citizens Property Insurance. We will provide the documentation your insurance carrier requires, including the Florida Product Approval numbers for every window we install. On one 1972 East Bay Drive ranch, the homeowner received that credit after we replaced seven corroded jalousies and a slider with Andersen 100 Series impact casements.
Yes, but the scope changes. Detached structures on Largo acreage lots still require Florida Product Approved windows when they replace openings, but the wind-load and structural requirements can be different depending on the size and use of the structure. What changes more often is the staging: outbuildings are usually set back near septic laterals or wells, and we have to mark every underground system before we drop a lift or a dumpster. We scope the whole lot before we quote, not just the opening.
Call TruePane Windows & Doors at (954) 280-4413 for a free window replacement estimate in Largo. A live person answers, and you’ll get a written, line-item quote on paper before any work starts.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Largo and Pinellas County with a second-generation glazier’s standard since 2008.
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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