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 windows and doors in Fern Park run anywhere from $900 for a basic custom-shaped vinyl window up to $9,000 or more for oversized impact-rated glass panels on an acreage property. If you live off Lake Julia Drive, near the US-17-92 corridor, or on one of the quiet streets behind the highway, you’ve probably already dealt with original jalousie windows, fogged aluminum sliders, or an outbuilding opening that doesn’t match any standard frame size. That’s exactly the work our Custom Windows & Doors team does every week here. Call (954) 280-4413 and a live person answers, any hour. We’ll walk through what your opening actually needs, what Seminole County will require, and what the job should cost before anyone puts a tape measure on the wall.
Why TruePane Windows & Doors Is Fern Park’s Preferred Custom Windows & Doors Company
Fern Park is a small unincorporated Seminole County community, and that specific fact changes how windows and doors get replaced here. There’s no city hall to pull permits from. Every replacement, whether it’s a custom shape on a 1950s CBS home or an oversized panel on a detached workshop, goes through Seminole County’s building department. County inspectors enforce Florida’s post-2004 hurricane-code updates, which means impact-rated glazing or an approved shutter system on every permitted opening. A lot of window companies quote the job first and figure out the county requirements later. We scope the permit question before we quote, because a missed HVHZ requirement red-tags the job and leaves you with a hole in your wall and a supplier on the phone.
Dale Kessler founded TruePane in 2008 on a rule he keeps written on the whiteboard: if the pane is not true, the job is not done. That standard is why homeowners in Fern Park call us when they have an original jalousie opening that needs a custom-shaped replacement, or a fogged seal on a 1970s slider that no off-the-shelf frame will fit. We’re not the cheapest bid. We’re the company that registers both manufacturer warranty layers in writing before the truck leaves your driveway, backs the work with our Done Right Promise, and still answers the phone if something isn’t right three weeks later. For many years, our crew has worked on Florida homes the way we’d work on our own mother’s.
Our Custom Windows & Doors Services in Fern Park
Most of what we do in Fern Park falls into a few categories. Here’s what they look like on the ground here.
Custom Shape Windows
Fern Park’s housing stock is dominated by single-story concrete-block homes built between roughly 1950 and 1975. A lot of those original openings were sized for jalousie louvers or thin aluminum sliders, not for modern double-hung or casement frames. Custom shape windows let us match the existing rough opening without reframing the wall, which matters on CBS construction where you’re dealing with masonry and lintels, not just studs. We measure every opening twice. If the block needs infill or the lintel needs reinforcement, we tell you before the glass is ordered.

Oversized Glass Panels
On larger Fern Park lots, we see a growing number of homeowners opening up the back wall of a 1960s ranch to bring in more light or connect the living room to a screened porch. Oversized glass panels in this area carry two specific requirements: they need to be rated for Seminole County’s High-Velocity Hurricane Zone wind loads, and the frame has to be handled carefully on the haul from the supplier. Fusion-welded frames can rack or twist in transport if they’re not braced properly, and a twisted jamb shows up as misalignment at install. We brace, we check, and we don’t rush the set.

Architectural Grilles & SDLs
Simulated divided lites are a common request on Fern Park homes where the owner wants the look of the original 1950s divided-light windows but the performance of a modern insulated glass unit. We install architectural grilles between the glass or on the interior surface, depending on the manufacturer and the look you’re after. On homes within earshot of US-17-92, we often pair SDLs with laminated impact glass so you get the curb-appeal detail and a meaningful drop in road noise. One upgrade, two problems handled.

Commercial Storefront Glazing & Curtain Wall Systems
Fern Park has a mix of small commercial storefronts along the US-17-92 corridor and light-office buildings set back from the highway. Storefront glazing and curtain wall work in an unincorporated county area means the same Seminole County permitting process as residential, but with different wind-load calculations and often stricter guardrail and safety-glazing requirements. We handle the permit package, coordinate with the county inspector, and carry the liability if the glazing doesn’t pass. That’s part of the square deal.

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 Fern Park
We’re an authorized installer for more than a dozen manufacturer lines, and on Fern Park jobs we regularly quote PGT, CGI, and Ply Gem side by side on paper so you can see exactly what you’re buying. PGT and CGI both offer High-Velocity Hurricane Zone impact products that pass Seminole County’s wind-load review without back-and-forth. Ply Gem gives us a solid mid-price vinyl option for custom shapes where no impact rating is required. Whatever line we quote, both warranty layers get registered in writing, with the durations stated, before the truck leaves your driveway. You shouldn’t have to trust anyone’s memory on a warranty.
Common Custom Windows & Doors Problems We See in Fern Park Homes
- Original jalousie windows with no impact protection: These louvered glass windows were everywhere in Fern Park’s 1950s and 1960s CBS homes. They leak air, let in road noise from US-17-92, and fail any code review for hurricane protection. Replacement usually means masonry infill or custom sizing, not a simple swap.
- Fogged seals on aluminum single-pane sliders: The 1970s aluminum-frame sliders common in this area lose their seal after decades of Florida humidity and UV exposure. Fog between the panes means the insulated glass unit has failed. On custom-sized openings, that means a new unit cut to the original dimensions, not an off-the-shelf fix.
- Racked or twisted fusion-welded frames on long hauls: Fern Park sits inland from the supplier warehouses most contractors use, and oversized frames hauled without proper bracing can arrive racked. We see jamb misalignment on large custom openings where the frame was twisted during transport and forced into place. We brace every oversized frame for the haul and check square before we set it.
- Outbuilding openings framed to city setback assumptions: Fern Park’s unincorporated lots often have detached garages, workshops, or ADU structures that were built under older, looser codes. A window or door on those structures still has to meet current Seminole County setback and wind-load requirements. We scope the opening against county standards, not against what a city inspector in Altamonte Springs might pass.
Pricing for Custom Windows & Doors in Fern Park, FL
A custom-shaped vinyl window in Fern Park generally runs $900 to $2,400 depending on size, frame material, and glass package. Custom impact-rated double-hung windows start around $1,400 and go up from there. Oversized glass panels on acreage lots typically fall between $3,500 and $9,000, with the permit package, HVHZ-rated glass, and haul logistics all built into that number. Architectural grilles and SDLs add $150 to $600 per opening depending on the pattern and whether the grilles sit between the glass or on the surface. Detached outbuilding or ADU openings add cost when we have to infill masonry or reframe the rough opening to current county standards. We do free estimates, and we put the line items on paper before you sign anything.
We Also Serve Cities Near Fern Park
Our crews work throughout Seminole County and the surrounding area. If you’re in Acacia Villas, Alafaya, Altamonte Springs, or Altoona, we handle the same custom window and door work with the same county-permitting discipline. The permitting jurisdiction changes from one town to the next here, so we always confirm who reviews the job before we quote it.
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
Yes. Because Fern Park is unincorporated, every window and door opening replacement pulls a permit through Seminole County, even if it’s a single custom-shaped window on a 1950s CBS home. The permit itself typically adds $150 to $400 to the job, plus the cost of any glass package upgrades the county requires, like impact-rated glazing. We include the permit and the inspection coordination in our quote so there’s no surprise line item. Call (954) 280-4413 and we’ll scope your opening, the permit path, and the real cost before you commit to anything.
They change the review path more than the glass itself. On Fern Park lots with septic and well systems, any structural opening change on a detached structure or an addition has to clear Seminole County’s well-and-septic setback review. A window or door framed to city assumptions can fail that review and delay the whole job while drawings get revised. We check setbacks on the front end, scope the opening to the actual county requirements, and only then order glass.
Yes. Laminated impact glass uses a plastic interlayer between two panes of glass, and that interlayer is what does the work on sound. On Fern Park homes just behind the US-17-92 corridor, replacing original jalousie or thin aluminum single-pane windows with laminated impact units drops road noise noticeably, often enough that you stop hearing the constant traffic hum indoors. It’s not silence. It’s a real reduction, and it doubles as the hurricane protection Seminole County requires on permitted openings.
Fog between the panes means the insulated glass seal has failed. Florida humidity got inside the unit, and once that happens, the glass can’t be repaired, only replaced. On a 1970s aluminum slider with a custom-sized opening, that usually means a new custom unit cut to the original dimensions, not a stock replacement from a big-box shelf. We measure the exact opening, order the replacement glass, and set it into the existing frame if the frame is still square and sound.
In most cases, yes. The original jalousie openings on Fern Park’s CBS homes are often undersized by modern rough-opening standards, but we can usually infill the masonry around the opening or use a custom-sized frame that fits the existing space without tearing out the entire wall. On a property off Lake Julia Drive where a homeowner was converting a detached block outbuilding into a wood shop, we pulled the Seminole County permit, removed the 1960s jalousies, infilled the block, and set a custom double-hung impact-rated Andersen window into the corrected opening. The county inspector signed off with no corrections because the glass carried an HVHZ approval sticker and the opening met current wind-load requirements. Call (954) 280-4413 and we’ll tell you what your specific opening can handle.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Fern Park and greater 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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