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 costs between $450 and $2,800 per opening depending on frame material, glass package, and whether your home sits inside the registered historic district. A mid-range vinyl double-hung in a standard 1970s CBS ranch runs $650-$1,100 installed. A historic-compliant clad-wood double-hung with true divided lights on Warren Ave or W. Church Ave runs $1,800-$3,200 per window, and the lead time stretches to 8-14 weeks. If you’re planning replacement windows in Longwood, call (813) 320-9346 and we’ll walk the job with you before you pull a permit.
We’ve worked the streets off S.R. 434 and around the historic core long enough to know what the Longwood Historic Preservation Board will ask for before we set foot in the opening. That knowledge is the difference between a permit that clears first review and one that bounces back twice. TruePane has been doing Window Installation the right way since 2008, and we serve Longwood with crews who understand both the Florida Building Code and the preservation rules that govern the older neighborhoods.
Key Takeaways for Longwood Homeowners
- Historic district homes need dual approval: Seminole County wind-load review plus Longwood Historic Preservation Board sign-off.
- Standard vinyl retrofit windows in Longwood run $650-$1,100 per opening; historic-compliant wood or clad-wood units run $1,800-$3,200.
- Aluminum single-pane sliders and jalousie windows from the 1970s-1990s housing stock are the most common replacement jobs we see.
- Every replacement window must carry a Florida Building Code design pressure rating, even inland off I-4.
- Both manufacturer warranty layers get registered in writing before our truck leaves your driveway. That’s The Keystone Standard.
Why TruePane Windows & Doors Is Longwood’s Window Installation Company
Most window companies working Longwood drive up from Orlando, quote a generic vinyl retrofit, and never mention the Historic Preservation Board until the permit gets kicked back. We don’t work that way. Dale Kessler founded TruePane in 2008 on a rule that’s still on the whiteboard: if the pane is not true, the job is not done. That means we measure every opening twice, quote manufacturer lines side by side on paper, and tell you about the preservation review before you spend a dollar on drawings.
Longwood homeowners tend to be people who’ve lived in the same house for twenty or thirty years. They remember the contractor who left a fogged seal and a sash that binds in July. They’re not looking for the cheapest bid. They’re looking for a company that answers the phone when the warranty question comes up in year five. A live person answers our phone 24 hours a day, seven days a week. No voicemail tree, no regional call center, and no callback form that sits in an inbox for three days.
We’re an authorized installer for Andersen, Pella, Marvin, and more than a dozen other manufacturer lines. That matters in Longwood because the historic district often demands a specific window profile that only certain manufacturers produce. When the board requires a simulated divided-light sash with a 7/8-inch muntin bar, we can quote the exact Andersen or Marvin unit that matches instead of hoping a stock window passes review.
Our Window Installation Services in Longwood
Single & Double Hung Windows
Single and double hung windows are the workhorse of Longwood’s 1970s-1990s ranch and split-level neighborhoods, and the upgrade path is straightforward: remove the old aluminum single-pane unit, address any rotted jamb or sill, flash the opening properly, and set a modern vinyl or wood double hung with low-E glass. In the historic district, double hungs often need true divided-light sashes to satisfy the Preservation Board. We quote both paths side by side so you see the actual cost difference in writing before you choose.

Casement Windows
Casement windows make sense in Longwood for a specific reason: they seal tighter than sliders when closed, which matters when humid air is pushing against your envelope eight months of the year. The crank mechanism also gives you full ventilation when the afternoon breeze finally shows up. We install casements from Andersen, Pella, and Marvin in standard suburban homes, and we’ve set clad-wood casements in historic homes where the board required a specific frame profile and finish.

Fixed & Picture Windows
Fixed and picture windows in Longwood’s older homes are often the first place we see seal failure, because the insulated glass unit sits in direct sun all afternoon with no sash to relieve the thermal expansion. When the seal goes, the window fogs and there’s no repair that restores the original energy performance. We replace failed picture windows with new units that meet Seminole County’s wind-load requirements, and we register both warranty layers on every job.

Awning Windows
Awning windows work well in Longwood bathrooms and kitchens where you want ventilation without exposing the opening to rain. They hinge at the top and shed water outward, which matters in a climate that gets afternoon downpours from June through September. We set awning windows in new construction and as replacements in existing block wall openings, with proper flashing to stop humid-air intrusion at the rough opening.

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 Longwood
We’re an authorized installer for Andersen, Pella, Marvin, Milgard, PGT, CGI, and ES Windows, and we stock common replacement parts for Longwood homeowners who need a sash, balance, or glass unit without waiting three weeks on a factory order. When you call for a quote, we bring manufacturer specification sheets and line-item pricing to the table. You see exactly what you’re buying, what the warranty covers, and how long each layer runs. No vague assurances. Both warranty layers get registered in writing before we leave your driveway.
Common Window Installation Problems We See in Longwood Homes
- Oxidized aluminum frames losing their thermal break: The aluminum single-pane sliders and jalousie panels common in Longwood’s 1970s-1990s CBS homes oxidize within 15-20 years in this humidity. The frame loses its thermal break, the seal fails, and the insulated glass unit fogs. There’s no field repair that restores it. Replacement is the honest fix.
- Vinyl frames chalking and warping faster than warranty math assumes: Central Florida UV is relentless, and vinyl frames in direct afternoon sun can chalk and warp before the manufacturer’s warranty clock runs out. When a vinyl sash warps, the jamb misaligns and the window drafts. We see it regularly in the tract subdivisions north of S.R. 434.
- Historic wood windows that can’t pass code or board review anymore: The single-pane wood windows in Longwood’s Victorian and Craftsman homes fail energy code and wind-load requirements outright. Homeowners who wait for visible rot to appear end up paying double: the replacement still needs to happen, but now there’s framing repair underneath it.
- Rotted jambs and sills from years of humid-air intrusion: When the original flashing fails or was never installed correctly, humid air sneaks into the rough opening for decades. By the time we pull the old window, the jamb is punky and the sill needs rebuilding. We fix the opening before we set the new window, and we flash it so the problem doesn’t come back.
Pricing for Window Installation in Longwood, FL
A standard vinyl double-hung retrofit in Longwood runs $650-$1,100 per opening installed. Casement windows run $800-$1,500 per opening depending on size and glass package. Fixed and picture windows run $500-$1,400 for typical residential sizes. Historic-compliant wood or clad-wood units with true divided lights run $1,800-$3,200 per window, and the lead time can hit 8-14 weeks because the units are factory-ordered to match the board’s lite-pattern requirement.
| Window Type | Price Range (Installed) | Notes |
|---|---|---|
| Vinyl Double-Hung Retrofit | $650 - $1,100 | Standard 1970s-1990s CBS homes |
| Casement Window | $800 - $1,500 | Low-E glass, Seminole County wind-load rated |
| Fixed / Picture Window | $500 - $1,400 | Based on glass unit size |
| Historic-Compliant Clad-Wood Double-Hung | $1,800 - $3,200 | True divided lights, Preservation Board spec |
You’ll notice the historic window costs roughly three times a standard vinyl unit. That’s not markup. That’s the cost of a custom-ordered unit with true divided-light sashes, a wood or clad-wood frame, and a finish that matches the era of your house. We flag that gap before you pull the permit, because the board won’t approve a stock vinyl retrofit in the district and the permit fee is non-refundable. Call (813) 320-9346 for a line-item quote on your specific openings. Estimates are free.
We Also Serve Cities Near Longwood
Our window installation crews regularly work in Lake Mary, Altamonte Springs, Casselberry, and Winter Springs. The permitting rules differ from one municipality to the next, but the standard doesn’t: every window gets measured twice, quoted on paper, and set square. Whether your home is a 1970s CBS ranch in Longwood or a newer build in Lake Mary, the keystone rule holds: if the pane is not true, the job is not done.
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 home sits within Longwood’s registered historic district, every replacement window requires review and approval by the Longwood Historic Preservation Board in addition to Seminole County’s Florida Building Code wind-load permitting. The board typically mandates period-accurate profiles, which usually means true or simulated divided-light sashes, and they will reject a standard vinyl retrofit that would sail through in Altamonte Springs or Winter Springs. We walk every historic district job through board review before we order a single unit. Call (813) 320-9346 and we’ll tell you what your specific street needs.
It’s not salt air in Longwood. It’s the combination of extreme UV intensity, high year-round humidity, and heat buildup on inland properties. Aluminum frames oxidize and lose their thermal break within 15-20 years, which causes seal failure and fogged glass units. Vinyl frames chalk and warp faster than manufacturer warranties assume because the UV exposure on unshaded east- and west-facing walls in Longwood is brutal. Coastal cities get the same sun but with more wind and salt, which produces a different failure pattern. In Longwood, humidity is the primary driver of frame and seal degradation.
A standard vinyl double-hung retrofit in Longwood runs $650-$1,100 per opening installed. A historic-compliant clad-wood or solid wood double-hung with true divided lights runs $1,800-$3,200 per window, and the lead time stretches to 8-14 weeks because the units are factory-ordered to match the Preservation Board’s required lite pattern. The cost gap is largely the custom manufacture: specific muntin bar profiles, wood or clad-wood frame material, and a finish that matches the era of your home. If you’re weighing a historic replacement, call (813) 320-9346 and we’ll quote both options side by side on paper.
Yes, and you should. Jalousie windows were common in Longwood’s 1970s and 1980s CBS homes, and they leak air constantly even when the glass slats are closed. They also don’t meet current Florida Building Code wind-load requirements in most openings. We remove the old jalousie frame, repair or rebuild the rough opening, and set a modern fixed or operable window with low-E insulated glass. The energy difference is measurable on your first summer power bill. Call (813) 320-9346 for a free estimate on your specific openings.
Look for fogged glass, condensation between the panes, chalky or warped vinyl frames, oxidation or pitting on aluminum frames, and drafts you can feel even when the window is closed and locked. In Longwood, seal failure on insulated glass units is the most common humidity-driven sign, and it shows up as permanent fog or haze between the panes that you can’t wipe off. If you’re seeing any of these, call (813) 320-9346 and we’ll assess the condition of every opening and tell you honestly which ones need replacement and which ones don’t.
Call TruePane for Window Installation in Longwood
If you live in Longwood and you’re tired of windows that fog, bind, draft, or leak, call (813) 320-9346. We’ll schedule a free estimate, measure every opening twice, and give you line-item pricing on paper before you commit to anything. Both manufacturer warranty layers get registered in writing before our truck leaves your driveway. That’s The Keystone Standard, and it’s the same standard we’ve applied on every job since Dale Kessler founded this company in 2008. Backed by years of community service, a 90-Day Done Right Promise, and a live person who answers every call. If the pane is not true, the job is not done.
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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