How Impact Doors Protect Your Home During Hurricane Season

Hurricane season in Florida runs from June 1 to November 30. That’s six months of watching the forecast and hoping the next storm turns away. Most homeowners think about the roof first. But doors are one of the weakest points on a house. A front door, a sliding glass door, or a garage door can fail when wind pushes and debris flies. Once a door gives way, wind and rain rush inside. That pressure can lift the roof and damage everything in its path. Impact doors are built to stop that from happening. They use laminated glass, reinforced frames, and strong locking hardware that hold up under high winds and flying objects. 

This article explains how impact doors work, what tests they pass, and what to look for before you buy. It also covers insurance savings, upkeep, and common mistakes homeowners make. Here’s what to know before the next storm.

Why Doors Are the Weak Spot in a Storm

A house is built to keep wind out. When it works, the pressure inside and outside stays balanced. When a door breaks, that balance is gone.

Wind enters through the opening and pushes up on the roof from inside. At the same time, wind passing over the roof pulls up from outside. That combination is how roofs get torn off during strong storms. One failed door can lead to damage across the whole house.

Doors are at risk for a few reasons:

• Large surface area. Sliding glass doors and garage doors cover a lot of space, so wind has more to push against.
• Glass panels. Standard glass shatters when hit by a branch, a roof tile, or patio furniture.
• Weak hardware. Basic locks and hinges aren’t made to resist hours of strong gusts.
• Gaps and seals. Older doors often let in water even when they don’t break.

Garage doors deserve extra attention. They’re often the largest opening on a home and one of the first things to fail in high winds.

What Makes an Impact Door Different

An impact door looks like a regular door from the street. The difference is in how it’s built.

Laminated Glass

Impact glass is made of two or more layers of glass bonded to a tough plastic interlayer. When something hits it, the glass may crack, but the pieces stick to that layer. The panel stays in the frame and keeps the opening sealed.

This is the same basic idea as a car windshield. It can take a hit without falling apart.

Reinforced Frames and Panels

Strong glass doesn’t help much if the frame bends. Impact doors use heavy aluminum, steel, or reinforced fiberglass frames. The panels are thicker, and the frame is anchored to the wall with more fasteners than a standard door.

Multi-Point Locks and Heavy Hinges

Most impact doors use locks that secure the door at several points along the frame, not just at the handle. This keeps the door from flexing or popping open under pressure. Hinges are also heavier and better anchored.

The Tests Impact Doors Have to Pass

Impact doors sold in Florida have to meet the Florida Building Code. Miami-Dade and Broward counties fall in the High Velocity Hurricane Zone (HVHZ), which has the strictest rules in the state.

Products are tested in a lab before they’re approved. The main tests include:

• Large missile impact test. A 9-pound 2×4 is fired at the door at about 50 feet per second (roughly 34 mph). This copies what happens when wind throws lumber or debris at a house.
• Small missile impact test. Small steel balls are fired at the door to mimic gravel and roof material flying in the wind. This applies to doors placed higher on a building.
• Cyclic pressure test. After the impact, the door goes through thousands of cycles of pushing and pulling pressure. This shows whether it can hold up for the length of a real storm, not just one gust.

Doors that pass get a Florida Product Approval number. In the HVHZ, many builders and inspectors also look for a Miami-Dade Notice of Acceptance (NOA), which is one of the toughest approvals to earn.

Each door also has a design pressure (DP) rating. This number shows how much wind pressure the door can handle. Higher numbers mean more protection. The rating you need depends on your home’s location, height, and how exposed it is to open wind.

Protection That Goes Beyond Storm Season

Impact doors are bought for hurricanes, but they help the rest of the year too.

• Security. Laminated glass is hard to break through. Burglars who try to smash a sliding door often give up.
• Noise control. The thick glass and tight seals cut down street noise, traffic, and neighbors.
• UV protection. The interlayer blocks most UV rays, which helps keep floors, furniture, and rugs from fading.
• Energy savings. Better seals and insulated glass options can reduce how hard your AC has to work in the Florida heat.

So the door is doing its job every day, not just when a storm is on the way.

Impact Doors vs. Hurricane Shutters

Shutters are the other common option. They work, but they come with trade-offs.

Shutters have to be put up before every storm. That means time, effort, and sometimes a ladder. If you’re out of town when a storm forms, your home may stay unprotected. Some shutters also block light and make it hard to leave the house during an emergency.

Impact doors are always in place. There’s nothing to install when a warning is issued. You don’t need to store panels in the garage or hire someone to put them up.

The trade-off is cost. Impact doors usually cost more upfront than shutters. But many homeowners decide the convenience, daily benefits, and possible insurance savings make up the difference over time.

Can Impact Doors Lower Your Insurance Costs?

They can. Florida law requires home insurers to offer discounts for features that reduce wind damage. Opening protection, which includes impact-rated doors and windows, is one of those features.

Here’s how it usually works:

1. A licensed inspector does a wind mitigation inspection on your home.
2. The inspector records the protection on every opening, including doors, windows, and the garage door.
3. You send the report to your insurance company.
4. The insurer reviews it and applies any credits you qualify for.

One thing to keep in mind: to get the full opening protection credit, every opening usually needs to be protected. If you upgrade the front door but leave an old sliding door in place, you may not get the full discount. Talk to your insurance agent before you buy so you know what counts.

How to Choose the Right Impact Door

Not every impact door fits every home. Here’s what to check.

Pick the Right Type

• Entry doors for the front of the house.
• Sliding glass doors for patios and pool areas.
• French doors for wider openings with a classic look.
• Garage doors rated for wind and impact.

Check the Ratings

Ask for the Florida Product Approval number or Miami-Dade NOA. Make sure the DP rating matches what your home needs. Your installer should be able to tell you this based on local code.

Hire a Licensed Installer

A door is only as strong as its installation. The product approval covers the door when it’s installed a specific way, with specific anchors and spacing. A bad install can cancel out the rating.

If you’re searching for impact doors fort lauderdale, ask each company for its license number, proof of insurance, and photos of past work. Confirm that they pull the permit and schedule the final inspection.

Plan Ahead

Don’t wait until a storm is in the forecast. Ordering, permitting, and installing can take weeks. The months before June are the best time to start.

Common Mistakes Homeowners Make

• Choosing by price alone. A cheap door with a low DP rating may not meet code for your home.
• Skipping the permit. Unpermitted work can cause problems with insurance claims and when you sell the house.
• Forgetting the garage door. It’s often the biggest opening on the house and one of the most likely to fail.
• Upgrading only one door. Wind finds the weakest point. One old door leaves your home exposed.
• Ignoring damage after a storm. Cracked impact glass still holds, but it should be replaced before the next storm.

How to Maintain Impact Doors

Impact doors don’t need much care, but a little upkeep helps them last.

• Clean tracks on sliding doors so sand and dirt don’t wear down rollers.
• Check weatherstripping and seals once or twice a year.
• Lubricate locks and hinges with a product made for doors.
• Look for cracks in the glass or gaps around the frame.
• In coastal areas, rinse frames with fresh water to remove salt buildup.

A quick check before June 1 each year is a good habit.

Frequently Asked Questions

Do impact doors ever break?

The glass can crack if something hits it hard enough. But it’s designed to stay in the frame and keep the opening sealed. A cracked panel should be replaced, but it still does its job during the storm.

How long do impact doors last?

With basic care, many last 20 years or more. Frames, seals, and hardware may need small repairs over time.

Do I still need shutters if I have impact doors?

No. Impact-rated doors that meet code don’t need shutters. That’s one of the main reasons people choose them.

Are impact doors required by law in Florida?

New construction and replacement doors in Florida have to meet wind code. In the High Velocity Hurricane Zone, that usually means impact-rated products or approved shutters. Your local building department can tell you what applies to your home.

Can I install impact doors myself?

It’s not a good idea. Installation has to follow the product approval exactly, and most areas require a permit and inspection. A licensed contractor is the safer choice.

Final Thoughts

Doors are easy to overlook when you prepare for a hurricane. But one failed door can let wind into your home and cause damage far beyond the opening. Impact doors keep that opening sealed with laminated glass, strong frames, and multi-point locks. They’ve passed lab tests that copy real storm conditions. And they work all year by improving security, cutting noise, and lowering energy use.

If your home still has standard doors, now is a good time to look at your options. Check the ratings, hire a licensed installer, and get it done before the next season starts.