Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom Windows & Doors Across Longwood
Custom windows and doors in Longwood come down to two things: getting the spec right before the permit is pulled and having a crew that knows Seminole County wind-load code. We do both. TruePane Windows & Doors has been installing custom units across Longwood for years, and we answer the phone when you call. If you’re planning a replacement in the historic district off W. Church Avenue or building a detached ADU on acreage near Markham Woods Road, call (813) 320-9346 and we’ll talk through what plan review will actually require before you spend a dollar.
Longwood is not Altamonte Springs and it is not Sanford. The permitting reality here is different, and the housing stock runs from 1880s frame Victorians to 1970s CBS ranches with original aluminum sliders. We know both. Our Custom Windows & Doors team measures every opening twice and quotes manufacturer lines side by side on paper, so you see exactly what you’re buying before any deposit changes hands.
Why TruePane Windows & Doors Is Longwood’s Preferred Custom Windows & Doors Company
We’ve earned our place in Longwood by being the company that flags the problem before the permit is filed, not after the plan review bounces back. That matters here more than most places. A board-approved historic replacement with the wrong lite pattern can stall a job for months. A storefront glazing package that misses Seminole County’s design pressure ratings fails plan review outright. Our crews have worked the historic district streets around W. Church Ave and Warren Ave, and they have worked the 1980s subdivisions off Markham Woods Road. They know which spec survives review in each.
Our Longwood customers call us back for the same reason they call us the first time: the warranty is written down, both manufacturer layers are registered before the truck leaves the driveway, and the 90-Day Done Right Promise means if the jamb binds in July, we come back and make it true. No paperwork fights. No arguing. Dale Kessler founded this company on a rule that still hangs on the whiteboard: if the pane is not true, the job is not done.
Background-checked, uniformed technicians show up to Longwood jobs prepared. We coordinate scheduling through our Miami office, but the crews that serve Longwood work locally and know the area. A live person answers every call, 24 hours a day, seven days a week. Not a voicemail tree. When you call (813) 320-9346, you reach a person who can tell you when we’ll be there.
Our Custom Windows & Doors Services in Longwood
Longwood pulls us in for specific work: period-correct replacements in the historic district, custom shapes that standard window companies will not touch, and oversized glass that has to meet Florida Building Code wind-load requirements without custom engineering. Here is what we handle most.
Custom Shape Windows
Arched transoms, radius tops, hexagons, eyebrow windows, angled bays. Longwood has them, especially in the older frame homes where a previous owner replaced the sashes but left the original opening geometry. We order the exact radius and rough-opening size from the manufacturer, then set the unit so the reveals are even and the sash operates true. A custom shape window that does not seat square leaks air from day one. Ours do not.

Architectural Grilles & SDLs
This is the work the Longwood Historic Preservation Board actually cares about. True divided-light sashes have individual panes set in muntins; simulated divided lites (SDLs) have grilles applied to the glass surface plus interior shadow bars. Both can be board-approved, but the board reviews the profile, the lite pattern, and the frame material before sign-off. We quote both options side by side so you can see the cost delta before committing. For the Victorian and Craftsman frames near the historic core, custom wood or clad-wood double-hungs are frequently the only spec that passes review.

Oversized Glass Panels
Floor-to-ceiling fixed panels, picture windows, sliding wall systems. In Longwood, oversized glass triggers closer wind-load scrutiny under Seminole County’s adopted Florida Building Code. A panel that spans too much surface area for its design pressure rating will not pass plan review. We verify the DP rating against the opening size on every quote, and when engineering is required, we bring it in before the permit goes to the city or county. No surprises at plan review.

Commercial Storefront Glazing
Longwood’s commercial frontage along 434 and around the historic core needs storefront glass that meets wind-load code and survives daily impact from storms, sun, and humidity. We install and replace aluminum storefront systems, entry doors, and sidelites for Longwood storefronts. Every frame is set square, sealed properly, and flashed so water moves away from the opening.

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 Longwood
We’re an authorized installer for more than a dozen manufacturer lines, and on Longwood jobs we quote the brands that match the spec. For impact-rated custom windows in CBS ranches, we lean on PGT and CGI units, which are built for Florida wind loads and hold up under Central Florida UV. For historic replacements, we quote clad-wood lines that can carry the divided-light profiles the board wants. For mid-range replacements, Simonton and Ply Gem offer solid vinyl options with the low-E and argon fills that cut Florida Power & Light bills. We keep parts and ordering channels open locally so a Longwood job does not wait on a manufacturer rep three states away.
Common Custom Windows & Doors Problems We See in Longwood Homes
Longwood’s housing stock has specific failure patterns. Here is what we find most often.
- Fogged aluminum sliders in 1970s-1980s CBS ranches. The original single-pane aluminum frames from that era fail after 40-50 years of Central Florida humidity. Seals break, argon escapes, and condensation collects between the panes. The fix is full replacement, not glass-only repair, because the frame itself is the weak point.
- Failed plan review on oversized custom windows. Out-of-area crews spec standard inland DP ratings and file the permit. Seminole County kicks it back. We verify design pressure against the actual opening dimensions before anything goes to plan review.
- Board rejections on historic district replacements. The Longwood Historic Preservation Board reviews every window replacement in the registered district. A vinyl retrofit with the wrong lite pattern gets rejected. Custom wood or clad-wood double-hungs with board-approved divided lites are usually the only path forward, and they need to be ordered before the permit is pulled, not after.
- Redrawn ADU layouts on acreage due to septic and well setbacks. We’ve seen detached ADUs framed with windows and doors placed before anyone checked the septic drain field and well distances. When the setbacks miss, the layout gets redrawn and re-permitted, and the window order changes with it. We scope this before quoting.
Pricing for Custom Windows & Doors in Longwood, FL
Custom window and door pricing in Longwood runs higher than a standard vinyl retrofit two miles away in a 1980s subdivision. Here is what to expect in this market.
- Standard custom vinyl double-hung replacement: $1,200-$2,400 per window installed, depending on size, glass package, and DP rating.
- Custom impact-rated casement or picture window: $2,200-$4,800 per unit, with larger openings and higher design pressure ratings at the top of that range.
- Historic district replacement (wood or clad-wood, board-approved divided lites): $3,500-$7,000 per window, including the permit documentation and board submittal package. Lead times of 10-12 weeks are common once the spec is locked.
- Oversized fixed glass panels: $150-$220 per square foot installed for panels that pass wind-load code without custom engineering. Panels requiring engineering add $500-$1,200 for the PE review and calculations.
- Detached ADU window and door package: $8,000-$18,000 delivered and installed, depending on the opening count and whether the layout has already been checked against septic and well setbacks.
Every Longwood quote is line-item. You see the window cost, the install cost, the flashing and trim cost, and the permit coordination cost separately. Call (813) 320-9346 for a free estimate. We’ll walk the openings with you and put the numbers on paper.
We Also Serve Cities Near Longwood
Beyond Longwood, our crews serve Lake Mary, Altamonte Springs, Casselberry, and Winter Springs. Each has its own permitting rhythm, but the same crew standard applies: measure twice, quote on paper, register both warranty layers before we leave the driveway.
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 - Custom Windows & Doors in Longwood
The Longwood Historic Preservation Board generally accepts simulated divided lites (SDLs) with applied grilles and interior shadow bars, but the profile and pattern must match the period character of the house. True divided-light sashes are the safest path for Victorian and Craftsman frames, and the board may require them on certain contributing structures. We quote both options side by side so you know the cost before submittal. Call (813) 320-9346 and we’ll review your specific house.
Yes. Every window and door replacement in Longwood requires a permit through the county or city, and every unit must meet Seminole County’s adopted Florida Building Code wind-load requirements. This applies even to inland properties. We handle the permit documentation and plan review submittal on your behalf. Estimates are free; call (813) 320-9346 for an exact quote.
Septic drain field and well setback lines determine where any new structure can sit on your lot. If the ADU footprint crosses those lines, the window and door layout has to be redrawn and re-permitted, which means the window order changes too. We check setbacks before we quote, so the layout that goes to plan review is the layout that gets built. Call (813) 320-9346 and we’ll scope it before anything gets ordered.
Full replacement. When the seal fails on a 40-50-year-old aluminum frame, the glass is not the only problem. The frame itself has oxidized, the thermal break is gone, and the original design pressure rating no longer meets current Florida Building Code. A glass-only retrofit leaves you with the same failing frame around new glass. Custom replacement windows sized to the existing rough opening are the correct fix. Call (813) 320-9346 for a line-item quote.
The answer depends on the opening width and height, the glass type, and the frame system. Most fixed panels up to roughly 40 square feet can pass plan review with standard impact-rated glass and a properly rated frame. Panels beyond that, or panels with unusual aspect ratios, typically require a PE-engineered design pressure calculation. We verify the DP rating against the opening size on every quote before anything goes to plan review. Call (813) 320-9346 and we’ll tell you where your panel falls.
Call TruePane Windows & Doors in Longwood
If you’re in Longwood and you need custom windows or doors, call us at (813) 320-9346. We’ll send a background-checked, uniformed technician to measure your openings, quote the right spec for your house and your permitting situation, and put both manufacturer warranty layers in writing before the truck leaves the driveway. The 90-Day Done Right Promise covers the work. Dale Kessler’s rule covers everything else: if the pane is not true, the job is not done.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Longwood and Seminole County.
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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