Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Sliding glass doors
Impact garage doorsPGTCGI
Before
After
Before
After
Before
AfterFast, Reliable Window Installation Across North Key Largo
Window installation in North Key Largo, FL runs $900-$2,800 per opening for impact-rated units in 2026, and you’re not allowed to install anything less. Monroe County’s High Velocity Hurricane Zone code makes non-impact glazing illegal here, which means every replacement is a code-driven job whether you planned it that way or not. TruePane Windows & Doors knows exactly what that means for your stilt home or Ocean Reef property, because we’ve been doing this work along the island corridor long enough to know which frames seize first and which NOA documents the county inspector wants to see. Call (954) 280-4413 and we’ll walk you through what your specific openings need.
Why TruePane Windows & Doors Is North Key Largo’s Preferred Window Installation Company
Most window outfits working North Key Largo drive down from the mainland, quote a price, and hope the salt hasn’t eaten the rough opening worse than the photos showed. We operate differently. Dale Kessler founded TruePane in 2008 on a simple rule that still governs every install: if the pane is not true, the job is not done. That means our crews re-flash every stilt-home opening with butyl tape before a new fusion-welded frame goes in, and we don’t leave until both manufacturer warranty layers are registered in writing and the homeowner has the paperwork in hand.
Homeowners across North Key Largo call us because we answer the phone. A live person picks up 24 hours a day, seven days a week, not a voicemail tree and not a callback form. When a 70-year-old retired couple off Card Sound Road finds a window that won’t close before a storm front, they want a person on the line who knows that a seized jamb on a 1970s aluminum frame is a five-minute diagnosis, not a mystery. We’ll be there when we say, background-checked and in uniform, measuring every opening twice before a single number goes on paper.
We also understand what this specific island demands. North Key Largo sits with Biscayne Bay on one side and the Atlantic on the other, and that dual-front salt load corrodes even anodized aluminum frames within 10 to 15 years. Contractors who work the mainland don’t always plan for that. We do, because we’ve replaced enough corroded double-hungs off Ocean Reef Drive to know the jamb screws will be seized before we touch them. Our Window Installation team carries marine-grade stainless hardware and impact-rated frame profiles on the truck for exactly this reason.
Our Window Installation Services in North Key Largo
Every job we do in North Key Largo starts with the same question: what does the opening actually need, and what does the county require it to be? That second question eliminates half the catalog. Here are the sub-services that matter most on this island.
Casement Windows
Casement windows are the workhorse of North Key Largo stilt homes, and for good reason. Their compression seal closes tighter against wind-driven rain than any sliding or double-hung sash, which matters when a Category 3 is pushing water horizontally off the Atlantic. On a 1970s stilt home off Ocean Reef Drive, our crew replaced a row of corroded single-pane aluminum double-hungs with ViewLux impact-rated casements. The original jamb screws had seized in the salt-laden air, so we cut out the entire sash frame, re-flashed the rough opening with butyl flashing tape, and anchored the new fusion-welded frames into the concrete pilings. The homeowner had been quoted six months by another contractor; we locked the order within a week because our supplier had the NOA documentation already on file for this exact frame profile. That’s the difference between a company that works North Key Largo and one that just quotes it.
Fixed & Picture Windows
Ocean Reef Club properties lean heavily on fixed and picture windows, often oversized units that frame the water view and need engineered impact glazing to do it legally. These aren’t stock sizes, and they can’t be ordered from a catalog. We quote Andersen, PGT, and ES Windows lines side by side on paper so you see exactly what the glass package, frame profile, and NOA documentation cost. A fixed impact window in North Key Largo runs $1,100-$3,400 installed depending on square footage and whether the opening requires new buck framing. The glass is the long-lead item, and we don’t order until every number is fixed in writing.
Impact-Rated Double-Hung Windows
Double-hung windows are traditional, and plenty of North Key Largo homeowners want to keep that look. The problem is the original builder-grade aluminum versions from the 1960s and 1970s are both corroded and completely non-compliant with current HVHZ code. An impact-rated double-hung in North Key Largo carries a installed range of $1,000-$2,600 per unit. The price sits higher than a mainland quote because the frame has to be fusion-welded for structural integrity, and both sashes need reinforced meeting rails that pass Monroe County’s missile-impact test. We register both manufacturer warranty layers in writing before the truck leaves your driveway.
Awning Windows
Awning windows show up a lot in North Key Largo kitchens and bathrooms, especially in elevated stilt homes where smaller openings sit above counter height. They hinge at the top and open outward, which means they shed rain better than any other operable style in a tropical maritime climate. Installed impact-rated, an awning window runs $700-$1,800 in North Key Largo depending on size. The hardware matters more here than anywhere else on the mainland, because the salt aerosol from both water flanks gets into every track and pivot. We use stainless hardware as standard, not as an upgrade.
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 North Key Largo
We’re an authorized installer for over a dozen manufacturer lines, and for North Key Largo work we lean into the ones that hold up under this specific corrosion load. Andersen, PGT are the names you’ll see most often on our North Key Largo quotes, with ES Windows as a strong option when the project calls for a specialty profile or an architect-specified finish. Because we stock local parts and maintain standing NOA files for the frame profiles we install most, we move faster on sealed-unit replacements and frame swaps than a company that has to start the paperwork from zero. You get side-by-side quotes on paper with actual numbers next to each line, so the decision is based on fact, not sales patter.
Common Window Installation Problems We See in North Key Largo Homes
After years of working this island, certain problems show up again and again. Here’s what we see most, and what it means for your window installation in North Key Largo.
- Seized jambs from dual-front salt corrosion. Salt-laden air from both Biscayne Bay and the Atlantic attacks aluminum frames from two sides at once. Within 10 to 15 years, even anodized frames get white corrosion blooms on the jamb tracks, and the sash binds or seizes entirely. A window that won’t open before a storm is a real problem on this island, not an inconvenience.
- Non-compliant single-pane windows in older stilt homes. The stilt homes built from the 1960s through the 1980s frequently retain their original jalousie or single-pane aluminum windows. Those units fail Monroe County’s HVHZ code outright, which triggers stop-work orders during renovations and insurance denials when you try to sell. Replacing them isn’t optional; it’s the first thing the inspector looks for.
- Failed seals in fogged insulated glass. The humidity above 70% year-round in North Key Largo means a failed seal shows up fast as fog between the panes that never clears. Once the desiccant inside the spacer bar is saturated, the unit is done, and no repair short of replacing the sealed glass will fix it. We see this most often on stilt homes where the original windows were installed without low-E coatings and the sealant has simply aged out.
- Ocean Reef Club review board rejections. Window work inside Ocean Reef Club has to clear the club’s architectural review board before installation, and that board enforces specific standards: no exposed fasteners, approved frame colors only. If a contractor orders glass before the board signs off, the homeowner eats the cost of the wrong frame finish. We’ve seen it happen, and we handle the board submission as part of the bid so it never delays your project.
Pricing for Window Installation in North Key Largo, FL
Here’s what you’re actually looking at in 2026. A single impact-rated casement window in North Key Largo runs $950-$2,300 installed. A fixed or picture window runs $1,100-$3,400 depending on glass area. Impact-rated double-hungs run $1,000-$2,600 per unit, and awning windows run $700-$1,800. These are installed prices that include the frame, impact glazing, NOA documentation, flashing, and anchoring into the existing opening. What moves the number is the size of the opening, whether buck framing needs replacement, and the frame profile you choose. The glass itself is the long-lead item, not the labor. You get a written line-item quote before ordering, and the price is fixed. No change orders, no surprise line items when the truck shows up. Call (954) 280-4413 for a free estimate with actual numbers, not a vague range over the phone.
We Also Serve Cities Near North Key Largo
TruePane serves homeowners throughout North Key Largo and the surrounding communities along the island corridor. If you’re in Acacia Villas, Alafaya, Altamonte Springs, or Altoona, the same crew standards apply, and the same live-answer phone line gets you scheduled. One call to (954) 280-4413 covers the whole area.
Serving North Key Largo, FL - Our Local Coverage Area
We’re based in the North Key Largo 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 North Key Largo
You can’t reuse them because the original frames on most North Key Largo homes were not built to carry impact-rated glazing, and Monroe County’s HVHZ code requires every replacement window to pass missile-impact testing. A 1970s aluminum frame, on top of being corroded and seized, simply doesn’t have the structural capacity to hold a laminated impact unit. The glazing alone can weigh 50% more than the single-pane it replaces. Trying to wedge an impact sash into an old frame will either fail inspection or fail the first time it’s actually hit by debris. We replace the full frame and re-flash the opening, every time. Call (954) 280-4413 and we’ll tell you straight what your openings need.
It adds two to four weeks to the front end of the project, and you can’t skip it. The Ocean Reef Club architectural review board has to approve frame style, color, and installation method before work starts, and they reject exposed fasteners and unapproved finishes. If a contractor orders your glass before board approval and the board rejects the frame color, you’re paying for new frames twice. Our process is to file the board submission with your initial bid, so approval happens before any money is spent on materials. It’s slower up front and far faster overall. We’ve done enough Ocean Reef work to know exactly what the board is looking for in the submittal package.
It means the window has been physically tested and certified to withstand a 9-pound 2×4 fired at it at 34 miles per hour, then hold together under thousands of positive and negative pressure cycles. Monroe County requires this certification for every window and door in North Key Largo because the island is an unprotected corridor with no mainland to break up a storm’s energy. Any window that doesn’t carry a Miami-Dade NOA product approval is illegal to install here, and installing it anyway leaves you with a failed inspection and an insurance nightmare. We install only NOA-documented impact-rated units from manufacturers who already hold the certification for the exact frame profile being quoted. Call (954) 280-4413 for a quote that shows the NOA numbers in writing.
You’ll see fog or condensation between the glass panes that doesn’t wipe off from either side, and it’s a clear sign the seal on the insulated glass unit has failed. It happens constantly in North Key Largo because the year-round humidity above 70% pushes moisture into any seal that’s started to age. Once the desiccant inside the spacer bar is saturated, the fog is permanent and the unit has lost most of its insulating value. The fix is replacing the sealed glass unit, not the whole window, if the frame is still sound. But in North Key Largo, many of those frames aren’t sound, and if they’re original from the 60s or 70s, they need a full impact-rated replacement anyway. Call (954) 280-4413 and we’ll tell you whether you need a new sealed unit or a whole new window, with the numbers for both.
Casement windows seal tighter than double-hungs in wind-driven rain, and that matters on a stilt home in North Key Largo where wind comes from both the bay and the ocean. A casement sash closes against a compression seal, so the stronger the wind presses, the tighter the seal gets. A double-hung relies on interlocking meeting rails, which are good when they’re new but allow water intrusion as salts corrode the track and the sashes start to bind. For a stilt home with full coastal exposure, casements give you better water resistance and they also happen to be the window style most of our North Key Largo customers prefer after living through a couple of hurricane seasons. We quote both side by side so you can see the price difference, and we’ll explain why one costs more than the other. Call (954) 280-4413 and ask for North Key Largo casement versus double-hung pricing.
Call TruePane Windows & Doors at (954) 280-4413 to schedule your free window installation estimate in North Key Largo. You’ll speak with a person, get real numbers in writing, and know exactly what your home needs before a single dollar is spent.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving North Key Largo and surrounding communities with craft-grade window and door installation.
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.