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 Lisbon
Window replacement in Lisbon typically runs $650-$1,400 per opening for a standard insert install, and $1,100-$2,300 per opening when full-frame work is required on older 1960s-1980s homes. Most jobs take one to two days once product arrives. If your Lisbon home still has its original jalousie windows or single-pane aluminum sliders, the seals, gaskets, and sash hardware are living on borrowed time in this lake-country humidity. Call (954) 280-4413 and we’ll walk the house with you, measure every opening twice, and put your options on paper side by side.
Why TruePane Windows & Doors Is Lisbon’s Preferred Window Replacement Company
We’ve spent over four decades in Florida glass and framing, and we know what Lake County air does to a window that wasn’t set right. Lisbon sits in a pocket of inland Florida where summer humidity hangs around like a wet blanket, and the older homes out here show it: fogged dual-pane units, rotted wood jamb liners, aluminum frames that bind by July. Our crews service Lisbon directly, dispatched from our South Florida office, and we schedule around your calendar, not ours.
Dale Kessler founded this company on a rule that still governs every install: if the pane is not true, the job is not done. That means a background-checked, uniformed technician measures twice before any order is cut. It means both manufacturer warranty layers get registered in writing before the truck leaves your driveway. It means the workmanship itself is guaranteed for 90 days under our Done Right Promise. No fine print that covers neither. No arguing if something isn’t right. We stand behind it.
Lisbon homeowners tend to keep their houses for twenty, thirty years. You’re not looking for the cheapest bid in the room. You’re looking for the last call you have to make on a window. That’s the customer we built this company for.
Our Window Replacement Services in Lisbon
Every Lisbon job starts with an inspection of the opening, not just the glass. Older rural Lake County houses hide surprises behind the trim, and our job is to find them before they find you. Here’s what we do most often out here.
Full Frame Replacement
When the frame itself is rotted, undersized, or out of square, pulling the whole window is the only honest fix. On a 1970s ranch off County Road 44, we pulled a single-pane aluminum slider that had been leaking humid air for years. The jamb was rotting and the sash had warped enough to bind. Behind the trim we found original, undersized framing that had never been flashed with modern tape, and a single strand of knob-and-tube wiring running through the rough opening. We reframed, rewired that circuit, installed a fusion-welded double-hung with low-E glass and argon fill, and the homeowner’s first utility bill after we finished was 18 percent lower than the same month the year before. Full-frame replacement in Lisbon runs $1,100-$2,300 per opening depending on framing condition and sill-pan work.

Insert Window Replacement
If your existing frame is sound, an insert replacement swaps the sash and hardware without tearing out the surrounding trim or stucco. It’s faster and less invasive, and it’s the right call for many Lisbon homes where the frame is still square but the glass and moving parts are shot. Inserts in Lisbon typically land between $650 and $1,400 per opening for a standard double-hung or slider.

Storm Window Replacement
Storm windows are the quiet workhorse of inland Florida homes. They’re not impact-rated; they don’t need to be out here. But they do need proper weatherstripping and a clean sill to do their job. We replace failed storm units, rebuild the weep system, and make sure the air barrier is continuous before we put the trim back on. This is a mainstay of older Lisbon stock.

Energy-Efficient Upgrade
This is the dominant reason Lisbon homeowners call us. The housing stock out here was built when jalousie windows and single-pane aluminum sliders were standard, and energy codes were an afterthought. Upgrading to low-E glass with argon fill and thermally broken frames changes how a house breathes, and how it bills. Most Lisbon homeowners see the difference on the first full utility cycle after install.

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.
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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 Lisbon
We’re an authorized installer for more than a dozen manufacturer lines, and in Lisbon we stock and install ES Windows, ECO Window Systems most frequently. Each line has a different price point and a different warranty structure, and we quote them side by side on paper so you see exactly what you’re buying and what it covers. We register both warranty layers, manufacturer and workmanship, in writing before the truck leaves the driveway. No factory-runaround if a seal fails. You call us; we handle it. That’s the whole point of The Keystone Standard.
Common Window Replacement Problems We See in Lisbon Homes
- Fogged dual-pane units from lake-country humidity. Lisbon’s inland humidity, compounded by the network of Lake County water bodies, pushes moisture into the edge seals of insulated glass. Once the desiccant is saturated, the window fogs and there’s no field repair that lasts. Replacement is the only honest fix.
- Jalousie windows that won’t seal. Original jalousie windows from the 1960s through 1980s lose their gaskets and clips over time. The louvers close but the window never seals, so conditioned air pours out all year. This is one of the most common reasons first-time Lisbon buyers call us within a year of closing.
- Rotted jambs hidden by a lake-country wet season. Single-pane aluminum frames corrode and the wooden jamb behind them rots long before a homeowner sees visible damage. By the time the window binds, the opening usually needs full-frame work, not an insert.
- Contractors from outside Lake County who skip flashing tape and sill pans. We see it constantly: a window was replaced by someone who didn’t retrofit modern flashing and sill-pan systems into the older opening. It seals fine at first, then leaks within two wet seasons once the original framing swells. That’s a hollow warranty and a redo waiting on the calendar.
Pricing for Window Replacement in Lisbon, FL
A standard insert replacement in Lisbon runs $650-$1,400 per opening. Full-frame replacement starts around $1,100 and goes to $2,300 per opening when we’re reframing, rewiring, and rebuilding the sill pan on older stock. The single biggest cost driver on older Lisbon homes is what’s behind the trim: undersized framing, rotted jambs, knob-and-tube wiring that’s now in our path, and sill pans that were never flashed. We handle that with an inspection first, allowances written into the contract, and any surprise priced and approved in writing before we touch it. You never find out about a change order from a bill. Call (954) 280-4413 for a free estimate with line-by-line pricing.
Key Takeaways:
- Insert replacement in Lisbon: $650-$1,400 per opening. Full frame: $1,100-$2,300 per opening.
- Lake County is outside the HVHZ. You don’t need coastal impact-rated products, and you shouldn’t pay Orlando-metro prices for them.
- Older Lisbon homes commonly hide rotted jambs, failed flashing, and outdated wiring behind the trim. We inspect first and price the surprises in writing before work begins.
- Done Right Promise: 90-day workmanship guarantee, both warranty layers registered in writing, no arguing.
We Also Serve Cities Near Lisbon
TruePane handles Window Replacement across Lake County’s inland communities. If you’re in Acacia Villas, Alafaya, Altamonte Springs, or Altoona, we’ll bring the same inspection-first approach and written pricing to your door. And our crews already know the roads out to Lisbon well enough to be on time without excuses.
Serving Lisbon, FL - Our Local Coverage Area
We’re based in the Lisbon 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 Lisbon
No. Lake County, including Lisbon, sits outside Florida’s High-Velocity Hurricane Zone, so replacement windows only need to meet inland wind-speed product approval thresholds under Florida Building Code, not the stricter coastal HVHZ specs. Contractors from the Orlando metro or coastal markets sometimes quote HVHZ-rated products at a cost premium that isn’t actually required in Lisbon. We’ll quote the correct product for Lake County code, not the upsell. Call (954) 280-4413 and we’ll walk you through what your specific opening requires.
Lisbon’s persistent ambient humidity, compounded by its location within Lake County’s dense network of inland lakes, works its way into window edge seals faster than in drier inland markets. The desiccant saturates, the glass fogs, and the unit is finished. It’s not a cleaning problem and it’s not fixable in the field. Replacement of the sash or IGU is the only honest answer, and we’ll tell you that straight before you spend a dollar.
Yes, you can replace jalousies with standard double-hung windows, and yes, you’ll need a permit. Florida Building Code applies in Lake County, and any new window installation requires product approval for inland wind loads and a final inspection. We pull the permit, schedule the inspection, and make sure it passes. Jalousie-to-double-hung conversions are some of the most satisfying work we do in Lisbon because the energy difference is immediate.
Expect the opening to meet current flashing, sill-pan, and water-resistive barrier requirements once the old window comes out. On older Lisbon homes, you may also face undersized framing that must be corrected, and in some cases outdated wiring that runs through the rough opening and must be rerouted. We identify these during inspection, write allowances into the contract, and price any additional work in writing before we start. No change orders that appear out of nowhere.
Put your hand near the frame on a humid afternoon in August. If the air feels warm and damp against the aluminum, the frame is conducting heat and moisture. If the sash sticks or binds, the jamb is likely corroded from lake-country humidity. If your utility bill climbs while your usage doesn’t, the windows are a prime suspect. We’ll check the glass, the frame, the seals, and the opening, then give you a straight answer on what’s worth replacing and what isn’t. Call (954) 280-4413 for a free estimate.
Contact TruePane Windows & Doors in Lisbon
If you live in Lisbon and you’re tired of fogged glass, sticking sashes, or utility bills that climb every summer, call (954) 280-4413. We’ll schedule a free estimate, measure every opening twice, and put your options on paper: manufacturer lines side by side, warranty layers stated in writing, and a fixed price with no surprises on the bill. We answer the phone live. We show up when we say. And if the pane is not true, the job is not done.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Lisbon with honest window replacement and a Done Right Promise.
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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