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Fast, Reliable Impact Windows & Doors Across Big Coppitt Key
Impact windows and doors in Big Coppitt Key typically run $850-$2,400 per opening installed, depending on the product line and what we find once the wall is open. Most full-home replacements on the island’s elevated CBS and wood-frame homes land between $18,000 and $45,000. If you’re pulling a permit in Big Coppitt Key, call (813) 320-9346 first. A quick conversation with our Impact Windows & Doors team usually saves homeowners one full permit cycle and a surprise change order.
We work on Big Coppitt Key every week. The island sits nine miles from Key West, with salt air coming off both the Atlantic and Florida Bay sides, and Monroe County’s code enforcement here is not a suggestion. You’ll want a crew that has already stood in front of the building department on this island and knows what the inspector will flag before the first panel comes out.
Why TruePane Windows & Doors Is Big Coppitt Key’s Preferred Impact Windows & Doors Company
We’re the company homeowners on Big Coppitt Key call after someone else’s bid fell apart at inspection. Not because we’re the low bid. Because when Monroe County rejects an accordion shutter approval or flags a jalousie frame that was supposed to be “grandfathered,” we already knew it was coming and wrote it into the contract up front.
Dale Kessler founded TruePane in 2008 on a rule that has not changed: if the pane is not true, the job is not done. Our technicians are background-checked and uniformed, and they measure every opening twice before anything gets ordered. We serve Big Coppitt Key and the surrounding Lower Keys from our South Florida dispatch office, with local crews who know the difference between a 1960s jalousie frame and a 1980s aluminum slider just by looking at the stucco trim.
Every job carries the 90-Day Done Right Promise and The Keystone Standard: both manufacturer warranty layers registered in writing, durations stated, before the truck leaves the driveway. We do not make you chase paperwork if something is wrong. We stand behind it.
We also answer the phone. A live person, 24 hours a day, seven days a week. On Big Coppitt Key, where a storm can move in overnight and a failed window becomes a flooded bedroom by morning, that matters.
Our Impact Windows & Doors Services in Big Coppitt Key
Hurricane Impact Windows
Most of the original windows on Big Coppitt Key are single-pane aluminum jalousies or sliders from the 1960s through 1980s. Monroe County code no longer allows a like-for-like swap on those. Any replacement window must carry a Florida Product Approval for the county’s 150+ mph design wind speeds. We quote impact-rated casement, horizontal roller, and single-hung units side by side on paper so you can see exactly what each manufacturer line costs and what the warranty covers.

Impact Sliding Glass Doors
Sliders facing the water take the worst of it on Big Coppitt Key. Salt spray corrodes the tracks, wind-driven rain finds the weep holes, and after five to seven years even marine-grade aluminum starts showing oxidation at the jambs. We replace those units with fusion-welded frames and impact laminated glass rated for the county’s wind zone, and we check the surrounding framing for rot before we ever quote the door itself.

Impact Entry & French Doors
Entry doors on elevated Big Coppitt Key homes often sit exposed to wind from every compass point. We install impact-rated entry and French door systems that meet Monroe County’s current interpretation of the code, including the hardware and threshold details the inspector will check. If your existing door has an accordion shutter over it, do not assume that satisfies the permit. On Big Coppitt Key, the shutter system needs a current, site-specific approval on file with the building department. If it does not, the door unit itself must be impact-rated.

Impact Garage Doors
Garage doors are the largest single opening on most Big Coppitt Key homes and the first thing to fail in a storm. We install impact-rated garage doors with reinforced tracks and bracing that carry Florida Product Approval for Monroe County’s wind speeds. The door, the track, and the hardware all get checked, because a rated panel on undersized tracks is not a rated door.

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 Big Coppitt Key
We’re an authorized installer for more than a dozen manufacturer lines, including Andersen, Pella, Marvin, PGT, and CGI. In Big Coppitt Key specifically, we recommend products that hold up under continuous salt exposure: PGT’s WinGuard line and CGI’s Sentinel series are two we quote often for oceanfront and bayfront properties. We stock common replacement parts locally for Big Coppitt Key customers, which means a failed latch or torn weatherstripping gets handled faster than waiting on a mainland parts run.
Common Impact Windows & Doors Problems We See in Big Coppitt Key Homes
- Original jalousie windows with rotted sashes. On a 1970s wood-frame elevated home off Avenue I near the bay, our tech opened the wall during an impact window retrofit and found the original jalousie frames had rotted sashes and no structural jamb support. We wrote an allowance into the contract for full reframing, got a signed change order for the additional flashing tape and pressure-treated lumber, and installed fusion-welded impact casement units with low-E glass that passed Monroe County’s 150 mph design pressure review without the homeowner losing another permit cycle.
- Accordion shutters rejected at inspection. Homeowners who installed accordion shutters years ago often assume that covers the window requirement under current code. Monroe County’s building interpretation now requires either the window unit itself be impact-rated or the shutter system carry a current, site-specific approval on file. If that paperwork does not exist, the permit stalls until we replace the window with an impact-rated product.
- Salt-air corrosion hidden behind the stucco. Big Coppitt Key’s lack of any landmass buffer means salt spray hits frames from all sides. We routinely find jambs and sash hardware crumbling behind intact-looking stucco within five years of installation. Our inspector checks for oxidation before quoting any impact door or window swap.
- Failed seals and constant fogging. Original single-pane units on Big Coppitt Key trap humidity between glass layers once seals fail. Replacing them with impact-rated insulated glass solves the fogging and the code problem in one job. You are not spending money on a stopgap that gets flagged at the next permit review.
Pricing for Impact Windows & Doors in Big Coppitt Key, FL
Impact windows in Big Coppitt Key run $850-$1,900 per opening for standard-size single-hung or casement units installed, including the permit-ready glazing and framing inspection. Impact sliding glass doors start around $2,800 and run to $7,500 depending on width and whether the track needs reframing. Entry doors with impact glass run $2,200-$5,500. Garage doors rated for Monroe County wind speeds run $3,500-$9,000 installed.
These are real numbers from jobs we have done on Big Coppitt Key, not mainland pricing with a “remote island” note added. What moves a quote here is not the glass. It is what we find when the wall opens: rotted jamb support, undersized framing, failed waterproofing, and the shutter approval trap. We write allowances into the contract for those conditions, and any additional work gets priced and approved in writing before we touch it. You will not get a surprise change order from us.
Key Takeaways for Big Coppitt Key Homeowners
- Monroe County requires impact-rated glazing or a current, site-specific shutter approval on file. No like-for-like jalousie swaps anymore.
- Salt air on Big Coppitt Key corrodes even marine-grade aluminum frames within five to seven years. Get an oxidation check before quoting.
- Opening a 1970s wall often exposes rotted framing and requires an electrical or framing permit. We write allowances for this up front.
- Most Big Coppitt Key homes need full window replacement, not repairs, to satisfy code. Budget $18,000-$45,000 for a full home.
- Call (813) 320-9346 for a free estimate and a contract that survives Monroe County inspection without a surprise change order.
We Also Serve Cities Near Big Coppitt Key
Our Big Coppitt Key crews also cover nearby Lower Keys and South Florida communities, including Acacia Villas, Alafaya, Altamonte Springs, and Altoona. If you are in one of those areas and need impact windows or doors that pass Monroe County or local code, call (813) 320-9346 and we will send the right crew.
Serving Big Coppitt Key, FL - Our Local Coverage Area
We’re based in the Big Coppitt Key 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 Big Coppitt Key
No, not under Monroe County’s current interpretation. Your shutter system must carry a current, site-specific approval on file with the building department, or the window unit itself must be impact-rated. We see this exact situation stall Big Coppitt Key permits every month. Homeowners who installed accordion shutters in the 1990s or early 2000s often have no such approval on file, and the permit does not move until the window is replaced with an impact-rated product. Call (813) 320-9346 if you are unsure about your shutter paperwork, and we will tell you before you pull the permit.
Because Monroe County code treats a window replacement as a structural change once the rough opening is exposed, and on 1970s elevated wood-frame homes, inspectors routinely flag undersized jamb support, failed waterproofing, and outdated wiring inside the wall cavity. The electrical permit usually comes from old aluminum wiring or junction boxes that sit too close to the new opening. The framing permit comes from rotted sashes and missing structural headers. We write allowances for these into every Big Coppitt Key contract and price any additional work in writing before we open the wall further.
Replacement windows on Big Coppitt Key must carry a Florida Product Approval for design wind speeds of 150 mph or higher, depending on the exact wind zone and exposure category of your home. Monroe County’s mapping puts much of the Lower Keys, including Big Coppitt Key, in the highest wind design category in the continental U.S. Products rated for 140 mph in Miami-Dade may not pass here. We verify the product approval number against Monroe County’s current list before we order anything.
On Big Coppitt Key, even high-quality marine-grade aluminum frames commonly show significant oxidation on hidden jambs and sash hardware within five to seven years without proper anodizing and routine freshwater rinsing. Frames on the bay side and ocean side fail faster than on the road side. We recommend an annual rinse of all frames and tracks, and we check for internal corrosion during every service call. Catching it early means cleaning and re-anodizing instead of replacing the frame.
Yes. Original single-pane jalousie and slider windows on Big Coppitt Key let warm, humid air meet cool glass, which is why you get condensation and fogging. Impact-rated insulated glass units with low-E coating reduce that condensation and lower your cooling load, while also meeting the county’s impact requirements. You are solving both problems with one job, not paying for a dehumidifier bandage and still failing code. Call (813) 320-9346 for a free estimate on what your specific openings will cost.
Contact TruePane Windows & Doors in Big Coppitt Key
Call (813) 320-9346 for a free estimate on impact windows and doors in Big Coppitt Key. A live person answers, 24/7. We will schedule an inspection, measure every opening twice, and bring side-by-side quotes on manufacturer lines so you can see exactly what you are buying. No pressure. No surprise change orders. We’ll be there when we say, and we’ll stand behind the work.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Big Coppitt Key and the Lower Florida Keys.
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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