If you own a home in South Florida, you already know that windstorm coverage is one of the biggest drivers of your insurance bill. That is exactly why so many homeowners ask about the impact windows insurance discount Florida insurers are required to consider. The short answer: yes, upgrading to impact-rated windows and doors can typically lower your premium, but the savings come through a specific process built around a wind mitigation inspection rather than an automatic price cut.
Below we explain how the credits actually work, what "opening protection" means, and what you need to document so you can claim every credit you qualify for. As always, confirm the specifics with your own insurer or licensed agent, because your result depends on your home, your carrier, and the features you already have.
Why Florida Law Encourages These Discounts
Florida statute requires property insurers to provide premium discounts, credits, or rate differentials for homes built or retrofitted with construction techniques that reduce wind damage. Impact-resistant windows and doors are one of the most recognized of these features because they protect the building envelope during a hurricane. When windows fail, wind and water enter, pressure builds inside, and roofs and walls can be lost. By keeping the envelope sealed, impact-rated openings reduce the catastrophic losses insurers care most about, and the law asks carriers to reflect that reduced risk in your rate.
Keep in mind that the discount is a reduction on your windstorm premium, not a flat rebate. The amount varies widely from one insurer to another and from one home to the next.
The Wind Mitigation Inspection Is the Key
You do not simply tell your insurer you installed impact windows and receive a discount. To claim wind mitigation credits, a licensed inspector must complete the state's Uniform Mitigation Verification Inspection form, OIR-B1-1802. This standardized form documents your roof covering, roof deck attachment, roof-to-wall connections, roof shape, secondary water resistance, and opening protection.
The inspection is typically performed by a licensed contractor, professional engineer, architect, building inspector, or authorized home inspector. Once completed, you submit the form to your insurer, and they apply whatever credits your home qualifies for. The report is generally valid for about five years, so it is worth scheduling one after any major envelope upgrade.
What "Opening Protection" Means and Why All Openings Count
On the OIR-B1-1802 form, "opening protection" refers to how well every glazed and non-glazed opening in your home resists windborne debris. That includes windows, entry doors, sliding glass doors, garage doors, skylights, and any glass block.
Here is the part homeowners often miss: to earn the strongest opening-protection credit, all of your openings generally need to be protected to an impact-rated standard. A single unprotected window, an old sliding door, or an unrated garage door can drop your home into a lower credit tier, even if everything else is new. The inspector rates your home based on its weakest opening, so a partial upgrade may leave savings on the table.
- Windows and fixed glass
- Entry and French doors
- Sliding glass doors
- Garage doors (a common weak point)
- Skylights and glass block
If you are upgrading in phases, it is worth planning toward full coverage so the mitigation inspection can certify the whole envelope. Our team can walk your home and identify which openings still need attention; you can see the full scope on our services page.
How Much Can You Actually Save?
This is the question everyone asks, and the honest answer is that it varies. Your savings depend on your insurer's rating plan, your home's location and construction, the wind-borne debris region you fall in, and which mitigation features you already had before the upgrade. A newer Miami-Dade home that already had a strong roof will see a different result than an older Broward or Palm Beach home getting its first envelope upgrade.
Because of that, be cautious of anyone who promises a specific dollar amount or percentage before an inspection. The reliable path is to complete the OIR-B1-1802 form and let your carrier apply the credits, then compare quotes across insurers, since each one weights these features differently.
The Discount Is Only Part of the Benefit
The insurance credit is real, but it is separate from the other reasons South Florida homeowners choose impact glass. Those benefits are not line items on your policy, yet many owners value them just as much:
- Storm safety: impact-rated glass is designed to keep the envelope intact against windborne debris.
- Year-round security: the laminated glass is far harder to breach than standard windows.
- Noise and UV reduction: laminated units cut outside noise and block most UV that fades furnishings.
- Energy efficiency: tighter, better-insulating units can ease the load on your AC.
- No shutters to deploy: permanent protection means nothing to install when a storm approaches.
Documentation Every Homeowner Should Keep
To claim credits smoothly and protect your investment, hold onto the paperwork from your installation. Insurers, inspectors, and future buyers may all ask for it:
- The product approval numbers for your windows and doors, either a Florida Product Approval or a Miami-Dade Notice of Acceptance (NOA), which prove the products are Florida-approved and impact-rated.
- Your permit and final inspection records showing the work was permitted and passed by your local building department.
- The completed wind mitigation inspection (OIR-B1-1802) report.
- Your installer's invoice and any manufacturer warranty documents.
As a licensed and insured installer (License #SCC131153391), EZ Glazing Corp provides the approval documentation and pulls proper permits so your file is complete when the inspector arrives. If you are ready to start, contact us and we will help you plan an upgrade that supports the strongest mitigation credit.
Key takeaways
- Florida law requires insurers to offer discounts for wind-resistant features like impact windows, but savings vary by home and carrier.
- You must complete a wind mitigation inspection (form OIR-B1-1802) by a licensed inspector to claim the credits.
- Protecting all openings, including garage and entry doors, generally earns the strongest opening-protection credit.
- Keep your product approval/NOA numbers, permit, and inspection report on file, and confirm savings with your insurer.
Help Paying for the Upgrade
If cost is the hurdle, note that a state program exists to help. The My Safe Florida Home grant has offered matching funds to eligible homeowners for wind mitigation improvements, including impact windows and doors. Program funding and availability change over time, so check current status before you count on it, and pair any grant with the insurance credits above for the best overall value.
Frequently Asked Questions
Do I automatically get a discount when I install impact windows?
No. You need a wind mitigation inspection documented on form OIR-B1-1802 and submitted to your insurer. The carrier then applies whatever opening-protection and other credits your home qualifies for.
Do I have to replace every window and door to save money?
To earn the strongest opening-protection credit, all openings generally need impact-rated protection, since your home is rated by its weakest opening. Partial upgrades may still help, but full coverage typically maximizes the credit.
How much will I save on my premium?
It varies by insurer, home, location, and the features you already have, so we never quote a fixed figure. Complete the inspection, let your carrier apply the credits, and compare quotes, since each insurer weights mitigation features differently.
How long is a wind mitigation inspection good for?
A wind mitigation report is generally valid for about five years. It is a good idea to have a fresh inspection after any major envelope upgrade so your file reflects your current protection. Confirm timing with your insurer.