Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows & Doors Across Key Biscayne
Impact windows and doors in Key Biscayne are not a luxury upgrade. They are the single most important building envelope decision on an island where every opening faces salt spray from Biscayne Bay on one side and the Atlantic on the other. We install NOA-rated impact windows, sliding glass doors, entry doors, and garage doors across Key Biscayne, and we quote jobs with marine-grade hardware as the default, not the upsell. If you need a straight answer on cost, code, or whether your existing openings will pass a wind mitigation inspection, call (754) 238-2201. We will tell you what we know.
Why TruePane Windows & Doors Is Key Biscayne’s Preferred Impact Windows & Doors Company
TruePane Windows & Doors installs, replaces, and services impact windows and doors for homeowners across Key Biscayne. Our crews know the island’s building stock well: mid-century concrete-block homes off Crandon Boulevard, 1970s condo towers along the ocean drive corridor, and everything in between. That matters because a condominium association on the 14th floor of a Crandon Boulevard high-rise has a completely different permitting path than a single-family homeowner on Buttonwood Drive. We have worked both. We show up with the right marine-grade hardware, the right NOA paperwork, and a written scope of work before the first cut is made.
We operate under the Keystone Standard, which means both manufacturer warranty layers are registered in writing before our truck leaves your driveway in Key Biscayne. Dale Kessler founded this company on a rule that still governs every install: if the pane is not true, the job is not done. Every job carries our Done Right Promise. If something is not right, we come back and make it right. No paperwork fights, no arguing. Key Biscayne homeowners tend to stay in their homes for decades, and we build every window and door installation to match that timeline.
We hire local, we train our own apprentices into journeymen, and we answer the phone like a company that plans to be working on this island in thirty years. That is not a slogan. It is the reason our technicians wear uniforms, carry background checks, and measure every opening twice before ordering a single unit. Key Biscayne’s Key Biscayne homeowners deserve a contractor who treats their property like it is their own mother’s. That is how we work.
Our Impact Windows & Doors Services in Key Biscayne
Here is what we actually do on the island, and why the coastal conditions in Key Biscayne change the spec on each of these jobs.
Hurricane Impact Windows
Most single-family homes in Key Biscayne’s interior neighborhoods, including the blocks off Harbor Drive and Woodcrest Road, were built with single-pane aluminum jalousie windows that predate post-Hurricane Andrew code enforcement. These windows fail wind-borne debris tests on paper, and they fail in real storms. We replace them with NOA-rated impact windows using fusion-welded frames and stainless steel hardware. On Key Biscayne, we specify marine-grade finishes on every frame and every piece of hardware, because the salt that pits standard aluminum in three years does not care whether your lot faces the bay or sits three streets inland.

Impact Sliding Glass Doors
Original sliders from the 1970s and 1980s are common across Key Biscayne, and they have two problems by now. The multi-point locking hardware has seized from airborne salt, and the rollers have worn flat from decades of sand and humidity. We replace entire opening systems with impact-rated sliding glass doors built for Miami-Dade HVHZ. On Key Biscayne, that means marine-grade stainless tracks, sealed weep holes, and weatherstripping that will still seat properly in the sixth year. If your slider binds in August or fails to latch in October, call (754) 238-2201 before the next storm season starts.

Impact Entry & French Doors
Entry doors and French doors on Key Biscayne take salt from two directions. The gaskets, hinges, and kick plates that work fine in Coral Gables will corrode within a few hurricane seasons here. We install impact-rated entry and French door systems with stainless steel hinges and marine-grade thresholds as standard on every Key Biscayne job. Not as an option. As the baseline. The door should still open and lock cleanly in year ten, not year two.

Impact Garage Doors
Garage doors are the largest single opening on most Key Biscayne homes, and the one most often ignored until a wind mitigation inspection flags it. We install impact-rated garage doors with heavy-gauge tracks and stainless hardware that are designed to hold under positive and negative wind pressure. If your current door is a standard non-impact model from the 1990s, a wind mitigation inspector will likely fail it. We handle the replacement and the paperwork that proves compliance.

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 Key Biscayne
TruePane Windows & Doors is an authorized installer for more than a dozen manufacturer lines, and on Key Biscayne we commonly quote PGT and CGI impact products because of their proven performance in Miami-Dade County’s HVHZ. We also work with ply Gem and CWS lines where the project calls for a specific frame profile or glass package. The brand matters less than the build sheet. We quote manufacturer lines side by side on paper so you can see exactly what you are buying, including the glass type, frame finish, hardware grade, and both warranty durations. We register both warranty layers before the truck leaves your driveway. That is the Keystone Standard, and it applies to every Key Biscayne install.
Common Impact Windows & Doors Problems We See in Key Biscayne Homes
- Salt-crusted weep holes and frozen locking hardware. Interior lots on Key Biscayne get the same bidirectional salt spray as waterfront units. The small drainage holes at the bottom of standard aluminum window frames clog with salt and mineral deposits, and water backs up into the frame channel. Multi-point locks seize, and the door stops sealing.
- Single-pane jalousie windows without HVHZ ratings. Many of the original 1950s and 1960s homes off Crandon Boulevard and Harbor Drive still have jalousie and single-pane sliders. During a storm, if one of these openings fails, the home can pressurize from the inside and blow off the roof or a wall section. Replacement is a code issue, not a preference.
- Weatherstripping that disintegrates within a few seasons. Standard EPDM or foam weatherstripping breaks down fast in Key Biscayne’s salt-heavy air. We use marine-rated compression seals and silicone-based weatherstripping on every opening we touch on the island.
- Non-impact garage doors failing wind mitigation inspections. Florida law requires wind mitigation credits tied to the home’s openings, and Key Biscayne insurance carriers are scrutinizing older garage doors closely. A standard two-car garage door without impact reinforcement can cost a homeowner thousands in lost insurance savings.
Pricing for Impact Windows & Doors in Key Biscayne, FL
A single NOA-rated impact window replacement in Key Biscayne typically runs $900 to $1,800 installed, depending on size and the level of marine-grade hardware required. Impact sliding glass doors run $3,500 to $7,500 per opening on the island, with wider multi-panel sliders landing higher. Impact entry doors and French door systems run $2,800 to $6,000 installed. Impact garage doors usually start around $2,500 and run to $5,500 for a double door with full reinforcement and a reinforced track system. These numbers are higher than the same job in mainland Miami neighborhoods, and the reason is the hardware spec. Standard aluminum frames and hardware are not acceptable on Key Biscayne. We quote marine-grade stainless fasteners, corrosion-resistant frames, and sealed weep holes as the base package. The cheap inland-spec window will look fine on the proposal and rot within a decade. Call (754) 238-2201 for a written line-item quote on your specific openings. Estimates are free, and we will quote the correct spec for the island before you spend a dollar.
We Also Serve Cities Near Key Biscayne
TruePane Windows & Doors has crews working throughout South Florida. Beyond this page’s coverage of Impact Windows & Doors on Key Biscayne, we serve homeowners in Miami Beach, Miami, Coral Gables, and Hialeah. The salt and HVHZ requirements differ by neighborhood, but the standard of work does not change.
Serving Key Biscayne, FL - Our Local Coverage Area
We’re based in the Key Biscayne 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 - Impact Windows & Doors in Key Biscayne
Because Key Biscayne is a true oceanic barrier island, and every lot on it, even interior lots far from the beach, receives airborne salt spray from Biscayne Bay to the west and the Atlantic to the east. Standard aluminum frames and standard steel hardware corrode rapidly in that environment. Marine-grade stainless steel hardware and corrosion-resistant frame finishes are not optional here. They are the minimum spec for a window or door that will still open, lock, and seal after ten years. Call (754) 238-2201 and we will show you the difference on paper before we quote.
Most often, yes, if the replacement unit is the same size, the same or better NOA rating, and the building’s existing opening is already code-compliant. The complication on Key Biscayne is the condo association approval process and the need to match the frame finish and glass tint to the existing units, especially in the towers along Crandon Boulevard. We handle the association paperwork, and we can spec a single unit without forcing you into a full opening replacement. Call (754) 238-2201 for a straight answer on your specific building.
Because many of the island’s condominium towers were built in the 1970s with window openings that are not standard modern sizes, and the units cannot be moved through the building interior. Custom-sized NOA-rated impact units for upper floors often must be craned into place from the street side, which requires a Crandon Boulevard lane closure and coordination with village permitting. Mainland contractors routinely underestimate this coordination. We do not, because we have done it. Call (754) 238-2201 and ask about our recent upper-floor work on Crandon.
Plan for roughly 10 to 20 percent more on Key Biscayne than the same-size window in mainland Miami. The price difference is driven by marine-grade stainless hardware, corrosion-resistant frame finishes, and the added labor of sealing and flashing for a bidirectional salt environment. A $1,000 inland window becomes a $1,100 to $1,200 window on Key Biscayne. The cheaper inland spec will corrode at the weep holes and seize at the locks within a few seasons, and you will pay for it twice. Call (754) 238-2201 for an exact quote on your openings.
Not usually the seal. What we see most often on Key Biscayne is salt and mineral buildup in the lower track and the roller assemblies, combined with corrosion in the multi-point locking hardware. The door still seals, but the hardware is grinding against itself. If the door is also letting air or water past the gaskets, then yes, the weatherstripping has failed and needs replacement. Either way, do not force it. A forced door damages the locking points. Call (754) 238-2201 and we will diagnose it over the phone and schedule a repair visit.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Biscayne with impact window and door installation built on the Keystone Standard.
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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