Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Windows & Doors Across Key Largo
Replacing windows or doors in Key Largo is not like doing the same job in Homestead or Kendall. The salt air, the wind codes, the stilts, the limestone: every part of a house here sits in conditions that punish ordinary materials. A window replacement in Key Largo typically runs $4,500-$15,000, and impact-rated work starts closer to $8,000-$25,000 depending on how many openings we’re hardening and what kind of frames your home already has. Our Windows & Doors team works across the entire island, and Tom Barrett’s sons are out here most days, not dialing in from some call center. Call (877) 610-1318 and you get a live person, then a straight answer about what your house actually needs.
Key Largo is where we’ve watched pre-Andrew construction meet post-Andrew reality more times than we can count, and that’s the job we show up ready to do.
Why Barrett & Sons Construction Is Key Largo’s Preferred Windows & Doors Company
Barrett & Sons Construction is owned and operated by Tom Barrett, and Tom’s name, address, and license number are published for anyone to verify. That matters in Key Largo, where county requirements stack on top of each other and a contractor who doesn’t understand the local process won’t find out until the permit sits unapproved for weeks. We’ve built our reputation here on written change orders before any scope changes, permits pulled on every eligible job, and a 90-Day Done Right Promise that’s printed on the contract, not whispered in a sales pitch. If it’s not done right, Tom comes back. One call.
Key Largo homeowners tend to ask their neighbors before they hire anyone, and we like that. Ask around. Or look up the license number yourself. We’ve been serving local communities for over 29 years, founded in 1998, and the crews you’ll see on Key Largo carry the Barrett & Sons name on the truck. Not a franchise dispatching strangers.
Our Windows & Doors Services in Key Largo
Window Installation
New window installation in Key Largo means working with openings that have to perform. We install windows in concrete block and wood-frame stilt homes all over 33037, and the first question is always the same: is this wall bearing wind load from an exposure that has no buffer between you and the Atlantic? In neighborhoods off Card Sound Road or around the bayside off Highway 1, the answer is usually yes. We set frames, flash, and seal to Monroe County’s High-Velocity Hurricane Zone standard, not to a mainland checklist.

Door Installation
Front doors, back doors, and especially exterior doors on stilt homes take a beating here from sun, salt, and sideways rain. A door that looks fine from ten feet away can be rusting out at the threshold where salt water pools after every storm. We install entry doors, French doors, and side doors with stainless or hot-dipped galvanized hardware as the baseline, because anything less is a callback waiting to happen.

Window Replacement
Most of the Key Largo calls we get for window replacement come from owners of 1960s-1980s houses that predate the post-Hurricane Andrew building codes. Those windows were never impact-rated, the frames leak, and the laminate glass practically falls out of the opening if you pry the wrong way. A full-house window replacement in Key Largo ranges $4,500-$15,000, and we’ll give you a written line-item quote before anything goes on the truck. No allowances hidden in fine print.

Impact Windows & Doors
Impact windows and doors are not an upgrade in Key Largo. They’re the code. Monroe County’s HVHZ requirements mandate impact-resistant openings for new construction, and for retrofit work on stilt homes the case is even stronger. We install impact-rated systems engineered for 150+ mph wind loads, with laminated glass that stays in the frame when debris hits it. An impact window installation in Key Largo runs $8,000-$25,000 depending on the number of openings and whether we’re also upgrading the roof-to-wall connections at the same time.

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 Largo
We stock and install windows and doors from manufacturers whose names you can look up before you sign anything. Simonton, PGT, and CGI are the ones we specify most often in Key Largo because their impact-rated lines hold up to the salt-and-surge environment better than off-brands do. Our Windows & Doors team keeps common parts and hardware on hand for local customers, which means fewer dead weeks waiting on a shipment when a latch fails or a screen tears just before hurricane season starts in June.
Common Windows & Doors Problems We See in Key Largo Homes
- Corroded hardware and failing thresholds. The salt air blowing off Florida Bay and the Atlantic eats zinc-plated fasteners in a few years. We see doors that won’t latch and windows that won’t lock because the hardware has rusted shut. Stainless steel and hot-dipped galvanized are the fix, not a luxury.
- Leaky openings on stilt homes. Elevated houses move more than slab homes, and that movement cracks old caulking and breaks flashing seals. Water gets in, and on a wood-frame stilt home, water is rot. We reflash and reseal openings when we replace windows, because a new window in a bad opening still leaks.
- Pre-1992 windows that fail the HVHZ standard. Houses built before Monroe County adopted post-Andrew codes routinely lack impact-rated glass. A storm that glances off a new home can shatter older windows and let wind pressure tear the roof off. Hardening those openings is one of the most common scopes on the island.
- Sliding doors that bind or jam. Salt in the tracks, sand from the yard, and the slight settling of a piling-supported home all make sliding patio doors stick. We replace worn rollers, realign frames, and when it’s time, install new impact sliding glass doors that operate smooth even after a season of storms.
Pricing for Windows & Doors in Key Largo, FL
Window replacement in Key Largo runs $4,500-$15,000 for a typical home. Impact window installation starts at $8,000 and goes up to $25,000 when we’re hardening every opening and tying into the roof-to-wall connections. Door installation is usually $2,000-$8,000 depending on whether it’s a standard entry door or an impact-rated sliding glass door. The big swing factors are the number of openings, whether the home is concrete block or wood frame, and how much structural correction the existing openings need. Every quote we write in Key Largo is a written line-item quote, and every change after that is a written change order before the work happens. Call (877) 610-1318 to schedule a free estimate, and we’ll walk the house with you.
We Also Serve Cities Near Key Largo
Our crews work throughout the Upper Keys and just north into the mainland communities where a lot of Key Largo homeowners shop and visit. We serve Key Largo plus Florida City, Homestead, Leisure City, and Naranja. If you’re on the island or just across the bridge, the same team that handles Fence Installation in Key Largo and Driveway & Pavers in Key Largo can take a look at your windows and doors too.
Serving Key Largo, FL - Our Local Coverage Area
We’re based in the 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 - Windows & Doors in Key Largo
We can typically reach any address in Key Largo within one to two business days for an estimate, and faster when there’s a broken opening or a security issue. Call (877) 610-1318 and a live person answers, day or night. We schedule actual walkthroughs, not phone quotes you can’t hold anyone to.
Yes, we work throughout 33037, including the bayside communities, the ocean-side neighborhoods, and the areas off Card Sound Road. Key Largo is a long island and we know the difference between a house on a canal and a house on a raised fill lot, because the flood elevation and wind exposure requirements differ between them. Call (877) 610-1318 and we’ll tell you which standard applies to your address.
For new construction and major renovations, yes: Monroe County’s High-Velocity Hurricane Zone code requires impact-resistant windows and doors. For existing homes, it’s not automatically required, but most insurers here will not write or renew a policy on an older home without impact-rated openings. We’ll give you a straight answer about what your house needs and what the county will sign off on.
Key Largo pricing runs slightly higher than the mainland, mostly because flood zone and HVHZ compliance add engineering and inspection steps that don’t exist across the bay. A full window replacement in Key Largo is $4,500-$15,000, while the same job in Homestead might be a few thousand less due to simpler code requirements. The difference buys you openings that survive a storm instead of causing one.
Every completed job carries our written 90-Day Done Right Promise: if it’s not done right, Tom comes back and makes it right, one call. Manufacturer warranties on Simonton, PGT, and CGI products apply on top of that, and we register them for you. Call (877) 610-1318 for an exact quote, estimates are free.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Key Largo.







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