Replace Your Sliding Door With an Impact Door Built for South Florida Weather

If you’re thinking about replacing sliding doors with impact doors, here’s the short answer. You swap the whole door unit for one approved for impact protection, after a site visit confirms the opening and frame are ready.

This guide walks through each step in order. It covers how an impact door differs from a standard one, the signs an old door is failing, what a site visit checks, what affects cost, and what installation day looks like. Many readers are researching for a parent or family member. Others are living with a door that sticks or leaks. Either way, the steps below will help you plan.

What Makes a Sliding Door an Impact Door?

An impact door is built to resist wind-borne debris, such as flying branches, gravel, or broken roof tiles. It uses impact-resistant glass, usually laminated, set in a reinforced frame with strong tracks and locks.

Florida law controls how these products can be sold. Under Fla. Stat. § 553.842, a product may not be advertised, sold, offered, provided, distributed, or marketed as hurricane, windstorm, or impact protection from wind-borne debris unless it is approved under that section or § 553.8425. A door that claims impact protection should have approval behind that claim.

Look for a certification mark, label, or listing. Under § 553.8425, a product with one from an approved certification agency needs no further documentation to show it complies with the code.

The Florida Building Code sets the rules for how buildings are altered and repaired (§ 553.73). State law also lists adding or strengthening opening protections as a windstorm mitigation measure (§ 553.844).

Signs an Old Sliding Glass Door Needs Replacing

A sliding door needs replacing when it no longer slides, locks, or seals well. Some signs are easy to spot. Others hide in the frame.

• Sticking or dragging. The panel binds on the track or jumps off the rollers.
• Cracked or fogged glass. Fog between the panes usually means the seal has failed.
• Warped frame or loose hardware. A lock that won’t engage or a wobbly handle needs attention.
• Drafts, water, or rot. Air leaks, water stains, or soft wood around the edges point to a failing perimeter.

A door can still open and close and still need replacing. A worn lock, a bent frame, or a gap at the seal may not give the protection an impact door is built to provide. A common mistake is waiting until a storm to find out. Check the door before storm season.

Miami-Dade County’s hurricane guidance for windows and doors notes that openings can be secured with approved shutters or plywood. That guidance is a useful reference, but it doesn’t replace an inspection of your door.

What a Site Visit Measures and Checks

A site visit measures the opening and checks whether the frame and wall can take a new door. This step shapes everything that follows.

First, the team measures the rough opening, which is the space in the wall the door fits into. They also measure the existing door’s width, height, and frame depth. Sliding doors are often built to fit the opening closely. Small measuring errors can cause real problems on installation day.

Next, the team checks the frame, sill, and surrounding wall. Soft wood, cracked stucco, or water staining can mean prep work is needed. Based on what the inspection finds, the existing frame may stay in place or need replacing.

Permits come up here too. The City of Opa-locka notes that installing or replacing exterior impact windows generally requires a permit, subject to the building official’s determination (Opa-locka permit guidance). Exterior doors can also go through Miami-Dade product approval, which is based on testing and technical documentation (Miami-Dade product approval).

What Affects the Cost of an Impact Sliding Door

Four factors drive the price most: opening size, glass and panel setup, frame condition, and hardware. Each one changes the materials and labor.

• Size and panels. Wider doors and more panels mean more glass, more track, and more labor.
• Glass and frame. Impact glass and reinforced frames cost more than standard parts.
• Prep work. Rot repair, wall patching, or frame replacement adds time to the job.
• Hardware and finish. Locks, rollers, handles, and color choices all affect the total.

Shutters are another route to hurricane protection. Pinellas County notes that permanent accordion shutters are a hurricane-protection option for large openings like sliding glass doors (Pinellas County retrofitting guidance). Shutters serve a different need than a door, so they suit some openings and goals better than others.

The final price for your opening is set by its specific facts. An on-site estimate gives you the accurate figure.

How Installation Day Typically Goes

On installation day, the crew protects your floors, removes the old door, sets the new unit, seals it, and tests it. Here is the usual order of work.

1. Protect the area. Floors, walls, and nearby furniture get covered before work starts.
2. Remove the old door. The crew takes out the old unit and checks the opening once it’s clear.
3. Set the new frame. The impact frame is leveled, shimmed, and secured to the wall.
4. Install the glass panels. Sliding panels go onto the track and should roll freely.
5. Seal and test. The perimeter gets sealed, the sliding action gets tested, and the lock gets checked.
6. Clean up and walk through. The crew clears debris and shows you how the door slides, locks, and needs care.

A common mistake is skipping the lock and track check. A door that slides but won’t lock fully is still a problem. Make that check part of the walk-through. How long the job takes varies with the opening and what the inspection finds.

Finish and Color Choices for Your New Door

The frame finish shapes how the door looks from the street. Choose it with the outside of your home in mind.

Pick a color that suits the trim, siding, or stucco around the opening. A color that matches the rest of the home usually looks more finished than one that clashes. Match the hardware, too. A mismatched handle or lock can make a new door look unfinished.

Energy performance matters to some households. ENERGY STAR certifies residential windows, doors, and skylights for energy-efficiency performance (ENERGY STAR residential windows and doors). Look for that certification if energy use is part of your plan. For more on color trends, see our impact door color and finish guide.

Replacing Sliding Doors in Older Florida Homes

Older openings often need more prep work. The framing, wall type, and door size may not match current products.

Older block homes can have frames and sills that have aged under sun, rain, and salt air. That makes the inspection more important, not less. Ask the team to check the sill and frame closely during the site visit.

The Florida Building Code covers the alteration and repair of buildings (§ 553.73). Ask the team how the code applies to your specific opening when you meet.

This guide applies to homes in Miami, Fort Lauderdale, West Palm Beach, Kendall, Boca Raton, Naples, and Fort Myers. For more on older Florida homes, see our guide to retrofitting impact doors, which is a plain-text reference here.

Talk Through Your Sliding Door With Our Team

The next step is a conversation about your specific opening. That conversation starts with measurements, a look at the frame, and your goals for the door.

If you’re handling this for someone else, or you’re dealing with a door that sticks, leaks, or no longer locks, you don’t have to figure it out alone. Our first consultation is free, confidential, and carries no obligation to continue. Reach out through our contact page to book a free estimate or request a quote.