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 Longwood
Window installation in Longwood runs about $450 to $1,400 per opening for standard replacement work, with most ranch-home retrofits landing between $700 and $950 per window when you include flashing correction and disposal. That’s the honest number. At TruePane Windows & Doors, we measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves your driveway. If you’re in Longwood and you’re pricing our Window Replacement in Longwood, call (754) 238-2201 for a free estimate, and we’ll walk you through exactly what your house needs.
Longwood is a different animal than the neighboring towns. The historic core works under rules that don’t exist in Altamonte Springs or Lake Mary, and the ranch tracts are aging into full window-replacement territory at the same time. That means the contractor you hire has to understand both markets. We do. Window Installation is what our crews do every day, and Longwood is one of the markets we know best.
Why TruePane Windows & Doors Is Longwood’s Preferred Window Installation Company
We’ve been at this since 2008 as a company, founded by second-generation glazier Dale Kessler in 2008. That’s not a franchise story. Dale learned the trade from his father, and he keeps one rule on the whiteboard: if the pane is not true, the job is not done. Longwood homeowners who have lived in the same house for twenty or thirty years appreciate that kind of straightness. We answer the phone with a live person every hour of every day, and we sponsor county fairs and church roof funds because we plan to be in town in thirty years.
Our technicians arrive background-checked and uniformed. They work in your home the way they’d work in their own mother’s. When a Longwood customer calls about a fogged slider in Sanlando Springs or a rot issue around a Historic Village sill, our dispatch coordinates a local crew from our scheduling office, and we tell you honestly when we’ll be there. We’ll be there when we say. No call centers, no voicemail trees, no third party running the schedule.
The Keystone Standard covers every job we do: both manufacturer warranty layers registered in writing, durations stated, and our Done Right Promise on top. If it’s not done right, we make it right. No paperwork fights, no arguing. That’s a square deal, and Longwood homeowners who remember the contractor that left them a fogged seal and a door that binds in July know the difference.
Our Window Installation Services in Longwood
Double Hung Windows
Double-hungs are the most common retrofit in Longwood’s 1970s and 1980s CBS ranch homes. The original single-pane aluminum sliders that came with those houses have seals that fail from the daily heat-cool cycling, and the replacement unit needs to match the opening cleanly or you get air leaks around the sash. In the Historic Village, a double-hung that would pass in Altamonte Springs may be rejected for lite pattern mismatches, so we quote the right unit for the address, not the generic one.

Casement Windows
Casements seal tighter than sliders because the sash compresses against the frame gaskets when you close the crank. In Longwood’s humid summers, that’s a real advantage. We see casements working well on ranch homes where the original bedroom windows were narrow and tall, and on historic homes where a crank-operated casement matches the original fenestration better than a modern vinyl slider ever could. We can walk you through both standard and Impact Windows & Doors in Longwood.

Sliding Windows
Sliding windows are the bread and butter of the Sanlando Springs and Wekiva-area tracts. The original 1980s aluminum sliders in those neighborhoods are a known failure point: jamb screws corrode to powder, tracks warp, and the insulated glass units fog permanently. Full slider replacement, not sash swaps, is the correct fix. We carry Energy-Efficient Windows in Longwood with fusion-welded vinyl sliders, low-E glass and argon fill for those jobs, and we reflash the rough opening correctly when we set them.

Fixed & Picture Windows
Fixed picture windows do a specific job: light and view without ventilation. In Longwood, they’re common on front elevations facing the afternoon sun, which means the glazing takes maximum UV load. We specify low-E coatings on those units as a matter of course. For ranch homes, a picture window flanked by two casements or double-hungs is a classic Florida composition that reads well both in the historic district and the newer tracts.

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 Longwood
TruePane is an authorized installer for more than a dozen manufacturer lines, including Andersen service in Longwood, CGI, PGT, and ES Windows. CGI and PGT matter for impact-rated work, which comes up in Longwood even on inland homes when homeowners want wind-borne debris protection. ES Windows builds extruded aluminum frames that hold up to Central Florida UV and humidity. We quote these lines side by side on paper so you see exactly what you’re buying, and we register both warranty layers before the truck leaves your driveway.
Common Window Installation Problems We See in Longwood Homes
- Fogged glass on original single-pane aluminum sliders. Longwood’s afternoon thunderstorm pattern and intense UV create extreme thermal cycling, which kills the seals on 1980s insulated glass units. The fix is a full IGU replacement or a complete window swap, not a sash repair.
- Mold behind improperly flashed frames. The original installations on many 1970s CBS tract homes never had the flashing tape lapped at the sill. Humid air gets trapped behind the jamb, and the mold only shows itself when the window comes out. We strip and reflash the opening before setting a new unit.
- Certificates of Appropriateness stopping permitted work. In the Longwood Historic Village, homeowners who pulled only a standard Seminole County permit have had the permit challenged because the city requires Historic Preservation Board sign-off first. Standard vinyl double-hungs with snap-in muntins get rejected for not matching original lite patterns.
- Crank operators seized from humidity and corrosion. Casement windows on some of the older Longwood homes have crank mechanisms that bind from years of moisture. That’s often a hardware replacement plus a sash realignment, not a full window swap, and it’s a repair we do regularly.
Pricing for Window Installation in Longwood, FL
A standard replacement window in Longwood runs $450 to $950 for a mid-grade vinyl double-hung, fully installed with flashing correction and haul-off. Casement windows run $700 to $1,400 per opening because the hardware and the compression seal cost more. Fixed picture windows usually land between $400 and $900 depending on glass package and size. Impact-rated units from PGT or CGI add $300 to $800 per window in Longwood, though inland homes don’t have the same code mandate as coastal properties. Historic Village replacements run toward the upper end and sometimes higher because approved units often require custom lite patterns and profile matching. Call (754) 238-2201 for a written line-item quote. Estimates are free.
We Also Serve Cities Near Longwood
TruePane handles window installation in Lake Mary, Altamonte Springs, Casselberry, and Winter Springs, often scheduling crews out of the same dispatch office. If you’re in a nearby community, the same pricing, the same warranty registration, and the same promise apply. Covering these areas comes with Window Installation in Longwood of the same standard we’ve built here.
Serving Longwood, FL - Our Local Coverage Area
We’re based in the Longwood 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 Longwood
Yes, if your property sits within the Longwood Historic Village district, the city requires a Certificate of Appropriateness from the Historic Preservation Board before any building permit is issued for window or door work. Skipping that step and pulling only a standard Seminole County permit will get the permit challenged, and the board will require the work to stop. Replacement windows must match original lite patterns and molding profiles, which means many off-the-shelf double-hung vinyl units are not approvable. Call (754) 238-2201 and we can help determine whether your address falls in the district.
The original 1980s single-pane aluminum sliders in Sanlando Springs were built with insulated glass units that rely on a perimeter seal, and that seal fails from Central Florida’s daily heat-cool cycling. Intense afternoon UV expands the glass and frame, then evening cooling contracts them; over a few decades, the seal lets humid air inside the IGU, and you get permanent fogging between the panes. The only proper repair is a full IGU replacement or a complete window swap with a modern low-E unit. Call (754) 238-2201 for a quote.
No, not if it has modern snap-in muntins or a profile that doesn’t match the original lite patterns. The Longwood Historic Preservation Board reviews each application against the original fenestration of the structure, and a window approved in Altamonte Springs or Lake Mary is often rejected in the Village for that reason. We quote the right unit for the specific address rather than applying a one-size-fits-all window. Call (754) 238-2201 to discuss your street and what the board will accept.
We use a butyl-backed, self-adhering flashing tape lapped shingle-style at the sill, with the bottom edge left open so any water that gets behind the jamb can drain out rather than sitting against the block. The original installations on 1970s CBS tract homes often had no lap at the sill at all, which is why we find mold behind the jamb when we pull an old window. We strip the opening, correct the flashing, and only then set the new sash. Call (754) 238-2201 and we’ll tell you exactly what your openings need.
Inland Longwood is not in the same high-velocity hurricane zone as the coast, so impact-rated glazing is generally not code-mandated. However, many Longwood homeowners choose impact-rated units for wind-borne debris protection, reduced solar heat gain, and lower insurance premiums, and we routinely install CGI and PGT impact lines here. The upgrade runs $300 to $800 extra per window depending on the glazing package. Call (754) 238-2201 for exact figures on your home.
Key Takeaways for Longwood Homeowners
- Standard window replacement in Longwood runs $450 to $1,400 per opening; impact-rated upgrades add $300 to $800.
- The Longwood Historic Village requires a Certificate of Appropriateness before permits, and many standard vinyl units are not approvable there.
- Original 1970s-80s aluminum sliders fail from UV and thermal cycling, causing permanent fogging that requires a full IGU or window replacement.
- Improper flashing on CBS ranch homes traps humid air and breeds mold inside the wall cavity; correct flashing is part of every TruePane install.
- TruePane covers Longwood with the Keystone Standard: both warranty layers registered in writing, the Done Right Promise, and a live person on the phone around the clock.
Call TruePane Windows & Doors for Longwood Window Installation
If you’re in Longwood and your windows are fogged, leaking, or simply at the end of their service life, we’ll help you price the work and schedule it properly. Whether you’re in the Historic Village and need board-approvable units or in Sanlando Springs and need a full ranch-home retrofit, the process starts with a free, written estimate. Call (754) 238-2201 and we’ll answer the phone. Done right, a square deal, and a company that stands behind it.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Longwood 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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