Door Replacement in Key Biscayne - Free In-Home Measure, Written Price

Fast, Reliable Door Replacement Across Key Biscayne

Door replacement in Key Biscayne runs $1,800 to $5,500 for a standard exterior unit and $450 to $1,400 for a quality interior door, installed. If the opening needs frame repair, which is common on the island, add $300 to $900. Since 2001, we’ve scoped and priced this work the same way: a written quote before anything starts, a live arrival time you can track, and a 365-Day Done Right Promise in writing. Call (682) 281-2168 and you will talk to a person, not a phone tree.

Call (682) 281-2168

Why Juniper Windows & Doors Is Key Biscayne’s Preferred Door Replacement Company

Key Biscayne homes are not like mainland Miami homes. The salt air, the wind exposure, the older 1970s and 1980s builds around Crandon Boulevard and Island Drive, the condos along Ocean Lane Drive that were framed before current HVHZ code. We know what those openings look like before we ever show up, because we have been replacing doors on the island long enough to see the same failure modes repeat.

Our Door Replacement team is led by Sean Mackey, who has built the Juniper operation inside Relay Home Co. around one standard: a written price before a single screw turns. Key Biscayne customers get the same thing every mainland customer gets. A background-checked, uniformed technician. A locked quote. Photo updates. A digital invoice. No estimate that morphs into a surprise at the door.

And because we answer our phones 24/7, a Key Biscayne homeowner who finds a salt-corroded threshold on a Sunday morning can reach a live person at (682) 281-2168 right then.

Door Frame Repair in Key Biscayne

Door frame repair in Key Biscayne means fixing the jamb, threshold, and sill assembly that holds a door in place, and on this island it is usually driven by salt-air corrosion and wind-driven rain intrusion. A typical frame repair runs $300 to $900 depending on how much of the original wood or metal has rotted or rusted. We see it most often on older single-family homes off Crandon Boulevard where original jambs from the 1980s and 1990s were never properly flashed.

Jamb, Threshold, and Sill Work

When the bottom of a door frame has gone soft or the threshold is letting water through, the repair is not cosmetic. We pull the door, cut out the damaged section, sister in new material where needed, and re-flash the sill so the opening sheds water the way it was supposed to. On Key Biscayne we specify stainless or marine-grade fasteners because standard zinc-coated hardware fails quickly in this salt environment.

Rot behind the frame is the rule, not the exception, on older island homes. If we are already replacing the door, we inspect the jamb condition before quoting. Hiding a bad frame behind a new slab just means a callback in two years.

HVHZ Frame Standards

A frame repair on Key Biscayne is not a handyman-level patch. Because every exterior opening sits in the High-Velocity Hurricane Zone, the repaired assembly has to support a door that meets Miami-Dade NOA or Florida Product Approval design pressures. We treat the frame as part of the impact system, not an afterthought.

Interior Door Replacement in Key Biscayne

Interior door replacement in Key Biscayne typically runs $450 to $1,400 per door installed, depending on whether you want a pre-hung unit or a slab swap on an existing frame. Condo owners in buildings along Crandon Boulevard often face strict HOA rules about door styles and sightlines, and we are used to working within those requirements. A hollow-core bedroom door, a solid-core door for sound, a barn door for a master suite. We supply and hang all of them.

Pre-Hung vs. Slab Replacement

If your existing interior frame is square and solid, we can replace just the slab and save you money, typically $450 to $700. If the frame has shifted or the door binds, a pre-hung unit is the better call, and that runs closer to $900 to $1,400. We always check the frame condition before we quote either way.

Humidity and Interior Doors

Key Biscayne humidity does things to interior doors that inland air does not. Hollow-core doors can swell and stick in summer. Solid cores hold their shape better but weigh more and need properly adjusted hinges. We replace interior doors with the island’s climate in mind, not just the room’s look.

Trusted Brands We Service in Key Biscayne

We carry and service eight product lines, and for Key Biscayne exteriors we lean on the ones built for HVHZ wind loads. CGI and ES Windows both make exterior door systems with Miami-Dade NOA approvals and design pressures matched to island exposure. ECO Window Systems gives us a solid mid-range option for interior doors and lighter-duty openings. We keep local inventory for common Key Biscayne configurations, which means shorter lead times on many replacements. When a unit is custom fabricated, plan on 4 to 6 weeks before install.

Common Door Replacement Problems We See in Key Biscayne Homes

• Salt-air corrosion on frames and hardware. Stainless or marine-grade fasteners are not optional here. Standard hardware fails within a few years, and we replace it on nearly every exterior job we touch on the island.
• Non-HVHZ doors that passed a mainland inspection. A door that lacks a Miami-Dade NOA or Florida Product Approval will fail permit review in Key Biscayne, even if it fits the rough opening perfectly.
• Rot behind the existing jamb. Older homes off Ocean Lane Drive and around the village often have water damage hidden behind the frame. Swapping the slab without repairing the jamb leads to water intrusion and callbacks.
• Wind-driven rain through thresholds. Wind exposure on Key Biscayne pushes rain sideways. A properly flashed sill and a threshold rated for the opening’s design pressure are the difference between a dry floor and a repeat repair.

Pricing for Door Replacement in Key Biscayne, FL

What Door Replacement Costs in Key Biscayne

For context beyond doors: impact windows in Key Biscayne generally run $800 to $1,500 per window installed. An impact single-hung runs $900 to $1,800. Large or custom openings, the kind you see on waterfront homes, run $2,500 to $5,000. Whole-home packages land between $8,000 and $25,000 or more. What moves the price on the island: opening count, wind-zone design pressure, floor height, and frame material. Aluminum frames cost less than impact-rated fiberglass or clad wood. We measure every opening, check the existing jamb and threshold condition, and give you a written quote that holds. No “it depends” without numbers attached.

Florida Pays You Back

Key Biscayne homeowners can stack several incentives on a door replacement, particularly when the new unit is impact-rated. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades. Florida also exempts impact-resistant windows and doors from sales tax. The federal 25C energy credit can return 30% of the product cost, up to $600 per year, on qualifying units. And after a wind-mitigation inspection, which runs $75 to $150, windstorm-premium credits average around 25% on the windstorm portion of your policy. We cannot guarantee what your insurer or the state will approve; those numbers are set by the programs and the carriers, not by us.

Every exterior door we quote for Key Biscayne carries a Miami-Dade NOA or Florida Product Approval with design pressures matched to the opening. We never specify a unit above a +/-100 PSF rating because the engineering does not work that way. HVHZ compliance applies across the island, and if your building is east of Crandon Boulevard, the wind exposure is as serious as it gets in Florida. One comparison worth making: impact doors versus hurricane shutters. Shutters require someone to hang them before a storm and take them down after. An impact door is always there, always protecting the opening, no panels to store or lug around. We do not sell or install shutters, but the comparison is worth understanding before you spend.

We Also Serve Cities Near Key Biscayne

Our scheduling is coordinated from the brand’s Miami South FL office, with crews serving Key Biscayne locally and surrounding areas. We work in Miami Beach, Miami, Coral Gables, and Hialeah as well, with the same written pricing standard and the same 365-Day Done Right Promise on every job.

FAQs About Door Replacement in Key Biscayne

Key Takeaways

• Exterior door replacement in Key Biscayne runs $1,800 to $5,500 installed, plus $300 to $900 for frame repair when the jamb or threshold is compromised.
• Every exterior unit must carry a Miami-Dade NOA or Florida Product Approval with HVHZ design pressures; a non-rated door will not pass permit or insurance review.
• Salt-air corrosion is a fact of life on the island. We specify stainless or marine-grade fasteners and properly flashed sills on every exterior job.
• We replaced a failed 1990s sliding glass door on Island Drive where the original jamb had rotted from salt-air intrusion; the upgraded PGT impact-rated unit qualified the homeowner for windstorm-loss-reducing feature credits under Florida Statute 627.0629.
• Sean Mackey and our Key Biscayne crew give you a written price before work starts, a live arrival time, and a 365-Day Done Right Promise in writing.

Call (682) 281-2168 today to schedule your free in-home measure and written estimate. You will talk to a live person, get a real price range, and know exactly when we will arrive.

Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Key Biscayne since 2001.