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 Lisbon
Window installation in Lisbon usually runs $450-$1,400 per opening depending on the frame material, glass package, and whether the old jalousie framing needs to be rebuilt. Most homes here don’t need impact-rated windows, and paying for them is often a 15-25% premium for a product Lake County code doesn’t require. The real threat in Lisbon is humidity, not hurricanes. If your windows are fogging between the panes, binding in the frame, or letting the summer AC pour through the sashes, call us at (954) 280-4413. We’ll quote the right window for a Lake County home, not a coastal one.
Why TruePane Windows & Doors Is Lisbon’s Preferred Window Installation Company
We’ve spent years working the inland Lake County market, and the difference between Lisbon and the Orlando metro is not academic. Homes here are older, the ambient humidity is higher, and the window failures we see follow a pattern a coastal contractor rarely understands. A house on Oak Tree Lane or a 1970s ranch off Lake Norris Drive was not built for salt spray. It was built for heat, lake air, and afternoon storms that roll in fast and leave standing moisture behind. Our Window Installation crews have pulled hundreds of jalousie windows out of Lake County homes and know what the rough opening looks like underneath.
Dale Kessler founded TruePane with one rule that still governs every install: if the pane is not true, the job is not done. That means we register both manufacturer warranty layers in writing, state the durations plainly, and put our Done Right Promise on every job in Lisbon. No paperwork fights. No arguing about whether a bowed frame was “in spec.” We stand behind it.
Every technician who shows up in Lisbon is background-checked and uniformed. Every call is answered by a live person, 24 hours a day. Not a voicemail tree. Not a regional call center. When you call (954) 280-4413, a person picks up.
Our Window Installation Services in Lisbon
Most Lisbon homes need a straight Window Installation in Lisbon replacement, not a rebuild. Our crews handle the full range, but these are the four we quote most often in Lake County.
Single & Double Hung Windows
Double hungs are the workhorse replacement for Lisbon’s original jalousie and single-pane slider openings. A standard double hung with low-E glass and argon fill runs $550-$1,100 installed in Lisbon, depending on size and whether the old jalousie frame needs full tear-out. The top sash in a double hung tilts inward for cleaning, which matters when your windows face a lake and develop a film of pollen and humidity residue through the wet season.

Casement Windows
Casements seal tighter than any other operating window because the sash presses into weatherstripping on all four sides. For Lisbon homes near Lake Denham or along Lake Norris Drive, that mechanical compression matters. Casement windows in Lisbon typically run $600-$1,300 per opening. They’re a strong choice for the leaky corners of an older house where the original aluminum frame has started to corrode.

Awning Windows
Awning windows hinge at the top and shed water outward, which makes them useful in the humid months when Lisbon homeowners want to leave a window cracked without inviting rain into the sill. Expect $450-$950 installed. On mid-century ranch homes with low window openings in kitchens and bathrooms, awnings solve the problem of a sash that traps water behind the frame.

Fixed & Picture Windows
A fixed picture window is the least expensive glass to buy and the easiest to seal. In Lisbon, a fixed window installation runs $400-$1,200 depending on glass area and whether the opening needs new framing. Many homeowners pair a fixed center pane with operating sashes on either side, especially in older living rooms built around a view of the pastures and lakes.

Sliding Windows
Sliding windows replaced a lot of Lisbon’s original jalousies in the 1990s, and many of those sliders are now at end of life. A new horizontal slider runs $500-$1,100 in Lisbon with a low-E glass package. The weak point on a slider is the track, and Lake County humidity corrodes cheap roller assemblies within a decade. We install stainless track hardware and specify fusion-welded frames so the unit drains properly instead of pooling water.

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 Lisbon
We’re an authorized installer for more than a dozen manufacturer lines, and for Lisbon homes we regularly quote, PGT, and ES Windows side by side. ES Windows, in particular, has a strong thermal-break frame that performs well in high-humidity inland environments. We quote manufacturer lines on paper, in front of you, with both warranty layers stated in writing before the truck leaves the driveway. That’s The Keystone Standard. You’ll see exactly what you’re buying and what each layer covers.
We stock common replacement glass and hardware for the window brands already in Lisbon homes, which means a fogged IG unit or a broken sash lock doesn’t have to wait two weeks for a special order. Most replacement jobs are completed in a single visit.
Common Window Installation Problems We See in Lisbon Homes
- Fogged glass and failed seals from lake humidity. Ambient moisture from Lake Denham, Lake Norris, and the dozens of smaller water bodies around Lisbon pushes condensation into dual-pane units. Cheaper insulated glass units lose their argon fill and fog within 5-7 years here, not the 10-12 you see in drier inland markets. We replace the IG unit or the full sash, not the whole window when the frame is still sound.
- Corroded aluminum frames on original jalousies. The 1960s-1980s housing stock in Lisbon still carries single-pane aluminum frames and louvered jalousie windows. Decades of lake humidity corrode the aluminum tracks and the steel operating hardware until the window won’t close tight. We see this constantly on homes along County Road 33 and the older agricultural properties east of town.
- Rotted wood jambs and sill pans. Water traps behind louvered frames and older wood slider sills, and Lake County’s summer downpours keep those pockets damp for months. By the time a window binds, the sill pan may already be soft. We rebuild the rough opening with pressure-treated stock and install flashing tape at the sill before the new unit goes in.
- Water intrusion from skipped flashing tape. An install that skips sill flashing or uses drywall screws instead of coated fasteners will leak around the sashes by the second rainy season. We see this in houses that were “fixed” by handymen or interstate crews. The repair costs more than the original install would have.
Pricing for Window Installation in Lisbon, FL
Here’s what you’ll actually pay in the Lisbon market. A standard double hung runs $550-$1,100 installed. Casements run $600-$1,300. Sliders run $500-$1,100. Bay and bow windows, when an older Lisbon home calls for them, start around $2,800 and can reach $5,500 depending on the seat, the roof, and the glazing package. Garden and basement windows run $700-$1,600.
What moves the price is tear-out. If the old jalousie framing is rotten, the rough opening needs rebuilding, and that’s honest labor. We quote a fixed price with a written line item breakdown before work starts. No surprise charges on the bill. No change orders unless you change the scope. Call (954) 280-4413 for your free estimate.
We Also Serve Cities Near Lisbon
Our crews run routes through all of north Lake County, so we’re in and out of Lisbon’s neighbors the same way. If you’re in Acacia Villas, Alafaya, Altamonte Springs, or Altoona, give us a call. The same local knowledge applies, and we’ll tell you straight if your home sits close enough to a lake to need the same inland humidity spec we use in Lisbon.
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 Installation in Lisbon
You do not need impact-rated windows in Lisbon. Lisbon sits inside Lake County, which is outside Florida’s High-Velocity Hurricane Zone. Code here requires inland wind-rated products, not HVHZ-rated products. Paying for HVHZ glazing is usually a 15-25% premium for protection Lake County code does not require. The smarter spend in Lisbon is on a better insulated glass unit with low-E coating and argon fill, because humidity is the real enemy. Call (954) 280-4413 and we’ll quote the inland spec that meets code and saves you money.
Lisbon’s proximity to Lake Denham, Lake Norris, and dozens of smaller lake bodies keeps ambient humidity persistently high, and that moisture works on the edge seals of dual-pane units year-round. A cheap dual-pane window that would last 10-12 years in a drier inland market often fogs in Lisbon within 5-7 years. The fix is a better seal design, not a thicker pane. We specify units with higher-grade spacer systems and thermal-break frames for lake-adjacent homes.
For most Lisbon homes, a fusion-welded vinyl frame with a thermal break is the best value. Vinyl does not corrode the way the original aluminum frames do, and a welded corner won’t separate and trap water the way a mechanically fastened frame can. For homeowners who want wood on the interior, a hybrid frame with a vinyl or composite exterior and wood interior combines the look of wood with rot resistance at the sill. Aluminum is a poor choice near Lisbon’s lakes without a thermal break and marine-grade coating.
In most cases you can replace just the insulated glass unit, and we do it regularly in Lisbon. The first step is checking whether the sash itself is still square and the frame is not rotted. If the sash is sound, a new IG unit runs $200-$500 per opening installed. If the frame or sash is compromised, you’re better off replacing the whole window. The right call depends on what the opening looks like once the old unit comes out.
Yes, and in Lisbon the difference is measurable. Jalousie windows leak air constantly, and a 1970s louvered window has effectively no seal. A modern ENERGY STAR double hung with low-E glass and argon fill cuts air infiltration to nearly zero. Homeowners who replace jalousies with sealed units typically report a noticeable drop in summer AC load, especially if the windows face west. Call (954) 280-4413 and we’ll help you work out the real energy difference for your house.
Written by Dale Kessler, Owner at TruePane Windows & Doors.
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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