Windows & Doors in Key Largo - Written Price Before Anything Is Ordered

Fast, Reliable Windows & Doors Across Key Largo

If you’re searching for Windows & Doors in Key Largo, the short answer is this: window replacement here runs $4,500-$15,000, impact window installation runs $8,000-$25,000, and sliding or patio door replacement runs $4,500-$15,000. Those are real numbers for this island, not mainland pricing. Key Largo throws two things at every opening in your house that most Florida contractors never deal with: salt-air corrosion that eats standard fasteners in under a decade, and Monroe County’s dual flood-and-wind code that turns a simple window swap into an engineered retrofit. We’re Barrett & Sons Construction, and we’ve been getting this right since 1998. Call (877) 610-1318 and Tom will walk you through what your specific home actually needs.

Call (877) 610-1318

Why Barrett & Sons Construction Is Key Largo’s Preferred Windows & Doors Company

We’re not a franchise dispatching strangers from three counties away. Barrett & Sons is owner-operated, and Tom Barrett’s name is on the truck, the contract, and the license you can look up yourself. When a Key Largo homeowner calls, they get a live person on the phone, not a voicemail box. Our crews are Tom’s sons and their teams, background-checked and uniformed on every visit. The 90-Day Done Right Promise is written on every contract: if it’s not done right, one call brings Tom back to make it right. That’s how we’ve operated for over 29 years, and it’s why homeowners in places like Carysfort Cove and Ocean Reef Club keep our number on the fridge.

We also know what Monroe County’s building department expects before the first opening gets touched. The permit inspector works for you, not for me. That’s why we like him. Every job that requires a permit gets one pulled, and every inspection gets signed before we call the job done. You won’t find a surprise invoice at the end, either. Any scope change, any allowance shift, any price movement arrives as a written change order before work proceeds. An allowance that isn’t on paper is a surprise waiting for a date.

Our Windows & Doors Services in Key Largo

Hurricane Impact Windows

This is the job we do most on Key Largo. Monroe County’s High-Velocity Hurricane Zone code requires impact-rated openings on any new construction, and it’s the smart retrofit for any pre-1992 home that still has builder-grade or original aluminum windows. Impact window installation in Key Largo runs $8,000-$25,000 depending on opening count, glass package, and whether we’re re-flashing existing rough openings or rebuilding them. On stilt homes, we spec stainless steel mounting clips as the baseline. Galvanized hardware fails here. We’ve pulled too many corroded clips out of 2000s-era installs to pretend otherwise.

Window Replacement

Plenty of Key Largo homes were built in the 1960s through 1980s, before Andrew changed the codebook. Those jalousie windows and thin aluminum frames weren’t designed for 150 mph wind loads, and most have lost their seal anyway from decades of salt exposure. Window replacement on the island runs $4,500-$15,000. We carry Simonton, Ply Gem, PGT, and CGI lines so you can match the aesthetic your HOA wants without settling for mystery glass. If your home is in the 33037 zip and sits on pilings, we check the rough opening framing before quoting anything. Salt-corroded wood behind a window frame changes the scope, and we’d rather tell you before the job starts than after the old window comes out.

Door Installation

Entry doors, French doors, and interior door packages all have to contend with the same two problems on Key Largo: humidity that swells wood and salt air that corrodes hinges and thresholds. We install doors with marine-grade hardware as the standard, not an upsell. A door that racks in its frame within two years wasn’t installed wrong; it was installed with mainland materials. Our door work is quoted in writing, with no change orders unless you change the scope.

Impact Sliding Glass Doors

Sliding glass doors in elevated Key Largo homes fail in a specific way: the subfloor shifts on the pilings over time, the track loses alignment, and the rollers bind. Shimming a track on a stilt home isn’t a handyman job. We use shims spec’d for high-humidity, high-movement environments and re-bed the track so the door glides instead of grinding. Impact sliding glass doors run $4,500-$15,000 installed, and we coordinate the required Monroe County inspection before the final sign-off.

Trusted Brands We Service in Key Largo

We install and service PGT, CGI, and Simonton lines for Key Largo homeowners, and we stock the replacement hardware and sealants these systems need so you’re not waiting two weeks on a part from the mainland. If your builder put in a brand you can’t pronounce and can’t find parts for, we’ll tell you straight. You want a window or door you can look up, with a warranty the manufacturer actually honors. We handle the warranty paperwork and the follow-up, so you don’t have to fight a call center.

Common Windows & Doors Problems We See in Key Largo Homes

• Salt-air hinge and fastener corrosion. Builder-grade windows in newer communities like Carysfort Cove often came with zinc-plated fasteners and uncoated hinges. Within 5-7 years in this environment, the hinges rust, the seals warp, and the windows stick. The fix is stainless steel or hot-dipped galvanized hardware, which is our standard spec, not an upgrade.
• Non-compliant DIY impact window replacements. We get called after the fact more often than we’d like. A homeowner replaces a few windows themselves, doesn’t pull a permit, and then fails HOA architectural review or gets flagged during an insurance inspection. The dual flood/wind code requirements on Key Largo mean replacing an opening is never just swapping glass. You need the right product approval, the right flashing, and a signed inspection.
• Sliding door track misalignment on stilt homes. Elevated homes move. It’s not dramatic, but it’s constant: the pilings settle, the subfloor shifts, and door tracks rack. Using mainland shims in this humidity causes rollers to bind and frames to twist. We re-bed tracks with materials that handle the movement and the moisture.
• Builder-grade seal failure in master-planned communities. Several newer Key Largo developments were built fast, with windows that met code on paper but were sealed with materials that break down quickly in salt air. We see IG unit failures, fogging between panes, and warped frames in homes less than ten years old.

Pricing for Windows & Doors in Key Largo, FL

The Key Largo Limestone Reality

Every window and door replacement on this island has to work around something you can’t see: the Key Largo Limestone formation. This whole island sits on a fossilized coral reef that surfaces just a few feet below grade. Conventional excavation, trenching, and footing work are physically impossible, which is why Key Largo homes are built on driven concrete pilings anchored into bedrock. What that means for your windows and doors is simple: nobody’s digging new footings to change an opening. The existing piling foundation and elevated stilt structure dictate the scope. If a contractor starts talking about adjusting your foundation to fit a new door, they don’t understand Key Largo. We do.

In a stilt home in the Ocean Reef Club community, our crew replaced seven 1970s-era jalousie and aluminum-frame windows with HVHZ-rated impact windows. The existing rough-in openings were framed in salt-corroded wood that had lost load-bearing capacity. We installed stainless steel mounting clips and re-flashed every penetration, then coordinated the inspection sign-off with Monroe County before the final punch list. That’s the kind of job where a mainland crew would have bolted new windows into rotted frames and called it done. We don’t.

We Also Serve Cities Near Key Largo

Barrett & Sons Construction handles Windows & Doors in Key Largo and the surrounding communities. We serve Florida City, Homestead, Leisure City, and Naranja with the same written-estimate, permit-pulled approach. If you’re on the mainland and need the same straight talk, call (877) 610-1318.

FAQs - Windows & Doors in Key Largo