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 Fern Park
Window installation in Fern Park runs $450-$1,400 per opening for most replacement work, with full-frame replacements on older concrete-block ranches landing between $900 and $2,100 depending on masonry modification and custom sizing. We’re TruePane Windows & Doors, and we’ve been setting windows in Fern Park’s 1950s-1970s ranch homes long enough to know that the jalousie unit in your Florida room has a rough opening no off-the-shelf window will fit. Dale Kessler founded this company in 2008 on a rule that still governs every install: if the pane is not true, the job is not done. Call (754) 238-2201 for a free estimate, and a live person answers, 24/7.
Why TruePane Windows & Doors Is Fern Park’s Preferred Window Installation Company
A lot of window contractors work the newer subdivisions north of here. Few of them understand what unincorporated Seminole County actually means for a window permit. We do, because we’ve pulled Seminole County permits for Fern Park addresses for years, and we know the County’s review process, its inspection scheduling, and the specific energy code documentation it wants on Title 11 compliance. That is not a small detail. A contractor who files an Altamonte Springs or Casselberry permit for a Fern Park job stalls the whole project at plan review, and the homeowner pays for the delay.
Our Fern Park customers tend to be people who have owned their homes for twenty, thirty, forty years. They remember the contractor who left them with a fogged seal and a door that binds in July. We earn their trust by doing what we say: background-checked, uniformed technicians who measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves the driveway. That is The Keystone Standard, and it applies to every job we do in Fern Park.
We are not a franchise playbook. TruePane has proudly served local communities since 2008 through a craft heritage that started with second-generation glazier Dale Kessler, and we hire local, train apprentices into journeymen, and sponsor county fairs and church roof funds because we plan to be in this town in thirty years. Dispatch and scheduling are coordinated from our South FL office, but the crews who work Fern Park live and work in the Orlando metro. A live person answers the phone 24 hours a day, 7 days a week. Never a voicemail tree.
Our Window Installation Services in Fern Park
Fern Park’s housing stock runs heavily toward concrete-block ranches built between 1955 and 1975. That means the windows are often original aluminum single-panes, the rough openings are non-standard, and the work is usually full-frame replacement, not insert. Here is what we install most often, and why it matters for Fern Park homeowners.
Casement Windows
Casement windows in Fern Park ranches are usually replacements for jalousies or failed sliding units. They crank outward and seal tight against the frame, which matters in a climate where humidity runs above 75% most of the year and summer thunderstorms drive rain sideways. A casement replacement in a Fern Park concrete-block home typically runs $650-$1,500 per opening. The cost moves up when the rough opening needs masonry saw work, which is common when the original jalousie left a non-standard envelope.

Awning Windows
Awning windows hinge at the top and open outward, which makes them a good fit for Fern Park’s Florida rooms and over kitchen sinks where you want ventilation but also want to keep afternoon rain out. We set a lot of these in 1960s Florida room enclosures where the original jalousie openings were cut into the block wall at odd dimensions. Expect $550-$1,300 per window, more when masonry modification is required.

Fixed & Picture Windows
If you have a large living room opening with a fixed aluminum single-pane that is fogged between the glass, that is a failed seal, and the fix is a new unit. Fixed and picture window installation in Fern Park runs $500-$2,400 depending on glass package, size, and whether we’re setting it into an existing masonry opening or reframing around a larger opening. These jobs often pair with energy code upgrades under Florida’s Title 11, and we quote that on paper.

Single & Double Hung
Single and double hung windows are the most common replacements we do in Fern Park. They match the look of the original 1960s ranch windows, they operate simply, and they are available in impact and non-impact configurations from manufacturers like Simonton, PGT, and CGI. A double hung replacement in Fern Park typically runs $600-$1,400 per opening for a standard insert, but full-frame replacement with custom sizing runs higher. If the original window opening in your concrete-block wall is not a standard size, and many are not, the job requires a custom order. We quote that honestly before we start.

Sliding Windows
Sliding windows show up a lot in Fern Park’s older ranches, particularly in bedrooms and Florida rooms. They are simple, durable, and fit the long horizontal openings common to 1960s block construction. Replacement runs $550-$1,350 for a standard slider. When the old aluminum frame has oxidized to powder and the perimeter sealant has failed, which we see regularly off Lake Drive and throughout the US-17-92 corridor, the job is a full-frame replacement with new flashing, and we price it accordingly.

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 Fern Park
We are an authorized installer for more than a dozen manufacturer lines, and for Fern Park homeowners trying to decide between brands, we put quotes side by side on paper so you see exactly what you are buying. We regularly install Andersen, Pella, Marvin, Milgard, Jeld-Wen, PGT, CGI, and ES Windows. For Fern Park’s inland climate, PGT and CGI impact lines handle the wind-driven rain and summer storm cycles well, and their warranty coverage is solid when registered correctly. We do not leave the driveway until both warranty layers are registered in writing. If a Fern Park homeowner asks us to service or replace a Ply Gem or CWS unit, we can do that too. Parts turnaround for those lines is reliable in this market.
Common Window Installation Problems We See in Fern Park Homes
- Jalousie rough openings that match no modern standard size. The screened Florida rooms added to Fern Park’s 1960s ranches, often as DIY enclosures, were built over jalousie windows whose rough openings do not match any off-the-shelf unit made today. Replacing one almost always requires a custom order or masonry saw work, and contractors who quote it as a simple insert job miss the lead time and cost by a wide margin.
- Oxidized aluminum frames and failed perimeter sealant. Fern Park’s year-round humidity, routinely above 75%, accelerates aluminum frame oxidation. The original single-pane aluminum windows on many of these ranch homes have frames that are literally powdering. When the perimeter sealant fails, the first summer thunderstorm with wind-driven rain finds the gap, and the sill rots under the new window. We flash every new flanged unit with tape before we reset the sill.
- Fogged seals on double-pane units that are not actually old. A double-pane window that fogs between the glass has a failed seal, and cleaning the glass will not fix it. In Fern Park’s humid climate, even relatively new units can fail if they were not installed with proper perimeter drainage and flashing. We cut out and replace failed units and reset the opening correctly so it does not happen again.
- Permit delays from wrong-city filings. Fern Park is unincorporated Seminole County. A window permit filed with Altamonte Springs or Casselberry comes back rejected at County review, and the homeowner waits. We pull Seminole County permits for Fern Park addresses routinely, and we know what the County’s inspectors want to see on energy code compliance and flashing details before we schedule the inspection.
Pricing for Window Installation in Fern Park, FL
Here is what you can expect to pay for window installation in Fern Park. A standard insert replacement on an existing opening runs $450-$900 per window for a single hung and $600-$1,400 for a double hung. Full-frame replacement on a 1960s concrete-block ranch runs $900-$2,100 per window when masonry modification or custom sizing is involved. Casement windows run $650-$1,500 per opening. Awning windows run $550-$1,300. Fixed and picture windows run $500-$2,400 depending on glass package. Sliding windows run $550-$1,350. These ranges reflect Fern Park’s actual market, where non-standard rough openings and County permit requirements add real cost that newer-subdivision contractors often miss in their initial quote.
| Window Type | Typical Fern Park Range (Per Opening) |
|---|---|
| Single Hung (Insert) | $450-$900 |
| Double Hung (Insert) | $600-$1,400 |
| Casement | $650-$1,500 |
| Awning | $550-$1,300 |
| Fixed & Picture | $500-$2,400 |
| Sliding | $550-$1,350 |
| Full-Frame (Concrete Block, Custom) | $900-$2,100 |
Every quote is a written line-item quote with fixed pricing. No change orders, no surprise line items on the bill. We offer a permanent 5% discount for seniors and veterans in Fern Park, and standing offers include a free written repair estimate and a maintenance check. Call (754) 238-2201 to schedule your free estimate.
We Also Serve Cities Near Fern Park
Our Fern Park crews also serve homeowners in Anna Maria, Acacia Villas, Alafaya, and Altamonte Springs. For more on what we do, see our Window Installation services page. If you’re in Fern Park proper, we work every neighborhood along the US-17-92 corridor and around the Lake Drive area. Read more about Window Installation in Fern Park or call us directly for a quote.
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 - Window Installation in Fern Park
Yes. Fern Park is unincorporated, so window permits go through Seminole County’s building department, not a city hall. The County requires permits for any window replacement that changes the rough opening size, involves full-frame replacement, or alters the structural opening. Even a like-for-like insert may require a permit if it changes the energy performance characteristics of the home. We pull Seminole County permits for every Fern Park job that requires one, and we schedule the inspections. Call (754) 238-2201 if you’re unsure whether your specific window project will need a permit.
Fogging between the panes means the seal has failed and moisture has entered the space between the two glass layers. Cleaning the outside or inside surface will not help because the fog is trapped inside the unit. In Fern Park’s year-round humidity, this failure is common on older double-pane units, especially when the original install was flashed incorrectly or the perimeter sealant has failed. The only fix is a new unit. Call (754) 238-2201 for an exact quote, estimates are free.
Yes. We do this work in Fern Park regularly. The jalousie rough openings in those 1950s-1970s Florida rooms are almost always non-standard, so the replacement requires custom-sized units and often some masonry saw work on site. We quote that on paper before we start, and we flash the new flanges with tape to stop wind-driven rain from the summer storms. A jalousie-to-modern-window swap in Fern Park typically runs $700-$2,000 per opening depending on size and masonry scope. Call (754) 238-2201 and we’ll come measure it.
An insert replacement fits a new window into the existing frame and is faster and less expensive, but it only works when the original frame is still square, sealed, and in good condition. A full-frame replacement removes the old frame down to the rough opening and installs a new unit with new flashing and sealant. In Fern Park’s concrete-block ranches, full-frame is often the only option because the original aluminum frames are oxidized, the rough openings are non-standard, and the perimeter sealant has failed. Full-frame runs $900-$2,100 per window; inserts run $450-$1,400. Call (754) 238-2201 and we’ll tell you honestly which one your home needs.
Summer thunderstorms in Fern Park arrive almost daily between June and September, bringing wind-driven rain that can soak an open window rough opening in minutes. We plan installs around the afternoon storm window, we tent the opening when the sky turns, and we never leave a new unit un-flashed overnight. This is one more reason to hire a crew that has worked Fern Park summers before. A contractor who has never dealt with the 4 p.m. downpour off Lake Drive will learn the hard way, and your new sill will pay for it. Call (754) 238-2201 to schedule your free estimate.
Contact TruePane Windows & Doors in Fern Park
If you’re ready to replace the old aluminum windows in your Fern Park ranch, or if you have a Florida room jalousie that needs a proper sealed unit, call us. A live person answers 24/7. We’ll schedule a free estimate, measure every opening twice, and quote you manufacturer lines side by side on paper. No surprise line items. Both warranty layers registered in writing before the truck leaves. The Done Right Promise covers the work. Call (754) 238-2201 and let’s get it done right.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Fern Park and the surrounding Seminole County communities with craft and care.
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.



Before
After
Before
After
Before
After