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 Fern Park
Custom window and door work in Fern Park usually costs between $1,400 and $4,800 per opening, depending on whether we’re dealing with a weird Florida room rough opening or a straight full-frame replacement in a 1960s concrete-block ranch. Most Fern Park jobs need a Seminole County permit, not a city one, and we handle that paperwork before the first cut. If you’re on Lake Marian Road or anywhere along the US-17-92 corridor and you’re tired of looking at oxidized aluminum frames that won’t open, call us at (754) 238-2201 for a free estimate.
Here’s what Fern Park homeowners need to know before they sign a contract: the community is an unincorporated enclave, which means your window and door permits route through Seminole County’s building department, not a city hall. Contractors based in Casselberry or Altamonte Springs routinely drag these jobs out because they assume the wrong jurisdiction will handle inspections. A crew that doesn’t know the county process will stall your project by weeks. We’ve been through that building department enough times to know exactly which forms go where, and we list the permit fee as a separate line item on every quote we write.
Why TruePane Windows & Doors Is Fern Park’s Preferred Custom Windows & Doors Company
Custom Windows & Doors is what we do every day, but the Fern Park version of this work is different from what we do in newer subdivisions to the north. The housing stock here is from the 1955 to 1975 era. That means concrete-block walls, non-standard rough openings, and original aluminum frames that have been fighting Seminole County humidity since before most of our techs were born. We know these houses because we’ve measured dozens of them along Lake Marian Road, off Oxford Road, and through the neighborhoods that radiate out from Fern Park’s stretch of US-17-92.
Our crews are background-checked, uniformed, and led by second-generation glazier Dale Kessler, who started this company with a simple rule: if the pane is not true, the job is not done. That standard applies to every custom shape, every architectural grille, and every oversized panel we set in Fern Park. We don’t rush a jalousie replacement, because we know what happens when you stuff a two-inch gap with backer rod and caulk. The buyer ends up calling us anyway, two storm seasons later.
You’ll also get a live person on the phone whenever you call, day or night. No voicemail tree. Ask for Dale. Ask for a written line-item quote. Ask us to register both manufacturer warranty layers in writing before we leave the driveway. That’s called The Keystone Standard, and it’s how every TruePane Fern Park job gets closed.
Our Custom Windows & Doors Services in Fern Park
We focus on the work Fern Park’s older concrete-block homes actually need: custom sizing, full-frame replacement, and solutions for the jalousie windows and Florida rooms that most contractors won’t touch. Here’s the breakdown.
Custom Shape Windows
Fern Park ranches don’t come with standard openings. A 1963 block house off Lake Marian Road might have a picture window rough opening that measures 71-3/8 by 47-1/4 inches. No manufacturer stocks that. We order custom units built to the measured opening, and if the block isn’t square, we saw-cut and flash it before the new frame goes in. That’s the difference between a window that seats properly and one that leaks around the jamb in Fern Park’s summer thunderstorms.

Architectural Grilles & SDLs
If you want the look of divided lites without giving up the energy performance of a modern insulated unit, we install simulated divided lites and architectural grilles that match the mid-century character of Fern Park’s original windows. These get specified frequently on Florida room conversions and ranch front elevations, where homeowners want the 1960s look with 2026-era glass performance. The grilles go between the panes on most lines, so cleaning stays simple.

Oversized Glass Panels
Some Fern Park homeowners are now opening up back walls to the yard, which means large fixed panels and sliding door systems. Oversized glass in a concrete-block house requires careful shimming and expansion tolerance, because block moves differently than wood framing. We’ve set panels up to 12 feet wide in Fern Park homes, and every one of them gets a structural review before we order the glass. A panel that size under wind load isn’t a place to cut corners.

Commercial Storefront Glazing and Curtain Wall Systems
Along the US-17-92 corridor and in the small commercial buildings sprinkled through Fern Park, we install and repair storefront glazing, curtain wall sections, and entry systems. Storefront aluminum in Florida’s interior humidity tends to fail at the sill first, where standing water sits and eats at unsealed joints. We replace failed glass, rebuild mullion joints, and upgrade to anodized or factory-finished aluminum specified for interior Florida exposure rather than the cheaper mill finish some installers default to.

What happens when you call
- 1
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 Fern Park
We’re an authorized installer for PGT, CGI, and CWS, along with more than a dozen other manufacturer lines. That matters when your Fern Park rancher needs a custom size, because we can quote several brands side by side on paper, with the warranty durations stated, so you see exactly what you’re paying for. We stock common replacement parts and hardware for the PGT and CWS lines popular in this part of Seminole County, which keeps turnaround on sash replacements and glass swaps tight. No one in Fern Park wants to wait three weeks for a balance shoe when the window’s stuck open in August.
Common Custom Windows & Doors Problems We See in Fern Park Homes
- Oxidized single-pane aluminum frames. Fern Park’s year-round 75%+ humidity attacks the original aluminum on 1950s and 1960s ranches. You’ll see white crusty powder at the sill and jamb, and the sash eventually seizes so hard you can’t open the window when Florida room airflow is exactly what you need.
- Jalousie windows with no standard replacement size. The DIY Florida rooms added to Fern Park ranches were built around jalousie rough openings that no modern product matches. A rushed insert job leaves one-to-two-inch gaps around the new unit, and those fail within two storm seasons when wind-driven rain finds the caulk line.
- Hollow-core steel doors rusting from the inside out. The original exterior doors on Fern Park homes sweat during summer thunderstorms. That interior condensation rusts the bottom rail and jamb, and the failure shows up far earlier than it would in newer construction. By the time you see the rust staining on the exterior paint, the frame is usually gone.
- Fogged sealed glass on early replacement windows. A failed seal between two panes isn’t cosmetic. That fog means the insulating gas has leaked, and the window’s U-value is now close to a single pane. In a Fern Park cooling season that runs ten months a year, a fogged unit quietly adds to the AC load every month until it’s swapped.
Pricing for Custom Windows & Doors in Fern Park, FL
Here are the ranges we quote for Fern Park work, based on our recent jobs in the area:
- Custom shape window (full-frame, concrete-block modification): $1,900 - $4,800 per opening
- Standard full-frame replacement in a 1960s ranch: $1,400 - $2,600 per opening
- Jalousie-to-custom window conversion in a Florida room: $2,200 - $5,500, depending on masonry work
- Architectural grilles or SDL add-on: $180 - $420 per unit
- Oversized fixed glass panel (8+ feet wide): $3,500 - $9,000 installed
- Commercial storefront glass replacement: $700 - $2,200 per lite, depending on size and glazing type
What moves the number on a Fern Park quote is the rough opening. If it’s square, if it’s block, if it matches anything standard, you’ll land low. If it’s a Florida room jalousie with a wavy block opening, expect masonry time. We give you a written, line-item quote before work starts, and we register both manufacturer warranty layers in writing, which is the Keystone Standard. Call (754) 238-2201 for an exact figure on your opening. The estimate is free.
We Also Serve Cities Near Fern Park
Our Fern Park crews also run into Anna Maria, Acacia Villas, Alafaya, and Altamonte Springs for much of this same work. If you’re just outside the Fern Park line and you’re seeing the same oxidized frames or a Florida room jalousie problem, give us a call. We’ll let you know if we’re already working nearby.
Serving Fern Park, FL - Our Local Coverage Area
We’re based in the Fern Park 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 Fern Park
Because the jalousie was never built around a standard rough opening. Fern Park Florida rooms were DIY additions over original jalousie frames, and the masonry opening is almost always a non-standard width and height. You’re not paying for a window swap. You’re paying for a custom unit, saw-cutting the block to square the opening, flashing, and a sill pan. That’s a $2,200 to $5,500 job in Fern Park, not a $1,400 insert. Call (754) 238-2201 and we’ll measure it, no charge.
No, and that’s the thing most contractors get wrong. Fern Park is unincorporated Seminole County, so your window and door permit comes from the county building department, not a city hall. We pull the permit as part of the job, pass the inspections, and line-item the fee on your quote. If a contractor starts talking about Fern Park city permitting, be careful. That’s the first sign they don’t work here often.
That white powder is aluminum oxide, and it’s driven by coastal-grade humidity even though Fern Park isn’t on the water. Seminole County’s inland air still holds 75%+ relative humidity most of the year, and those 1950s and 1960s frames weren’t built with a marine-grade finish. The oxidation starts at the sill and jamb, then seizes the sash. Once the powder is visible, the structural strength of the frame is already compromised. The fix is a full-frame replacement in a modern ultraviolet-cured finish, not a sand-and-paint cover-up.
It means the seal has failed and the insulating gas has leaked out. A fogged unit performs close to a single pane, so your air conditioner is working harder to cool the same room. In Fern Park, where AC runs ten or more months a year, that’s a measurable monthly cost. Replacing the failed sash or the entire unit under warranty is the right call. If your warranty paperwork wasn’t registered or you can’t find the duration, call (754) 238-2201 and we’ll take a look.
Rarely. The original exterior doors on Fern Park’s 1955-1975 concrete-block homes were often hollow-core steel or louvered wood in frame sizes that don’t line up with modern 36-by-80 prehung units. We measure twice, and if the rough opening is within a quarter-inch of true, we’ll hang a new door in the existing frame. If it’s out of square, which is common on block, we’ll quote the masonry modification as a separate item. Call (754) 238-2201 and we’ll tell you what yours needs.
Call TruePane Windows & Doors for Your Fern Park Custom Window or Door
If you’re in Fern Park and you’re looking at windows or doors, call (754) 238-2201 for a free, written, line-item estimate. We’ll measure your openings, tell you what the county permit process looks like for your street, and give you prices on paper with warranty durations stated. The estimate doesn’t obligate you to anything, and you’ll talk to a person, not a phone tree.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Fern Park and the surrounding Seminole County communities.
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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