The Florida Homeowner’s Guide to Impact Windows.

What impact windows actually are (and what they aren’t).

An "impact window" in Florida is a window engineered to meet specific debris-impact and pressure-cycling tests under Florida Building Code — with state-issued certification documentation. The actual product isn’t a single thing: it’s a frame system (aluminum or vinyl) carrying a laminated glass pack (usually two panes with a polymer interlayer) tested to specific Design Pressure (DP) ratings for the wind zone where it’ll be installed.

An impact window is not the same as a "hurricane window" sold at a big-box store with a vague hurricane label. The legal test is documentation: every window we install at Access Impact carries either a Florida Product Approval (FL-#####-R# format) or a Miami-Dade Notice of Acceptance (NOA) — numbers we cite on every quote before you sign anything.

Florida building code + certifications, in plain English.

Florida divides the state into wind zones. Inland zones require lower-rated impact products. Coastal and HVHZ (High-Velocity Hurricane Zone) areas — including most of Miami-Dade and Broward — require the highest ratings. Your county building department will require a specific test category for your address.

The two certification paths

• Florida Product Approval (FL-#####-R#) — statewide certification managed by the FL Department of Business and Professional Regulation. Required for most Florida counties outside HVHZ.
• Miami-Dade NOA (Notice of Acceptance) — the stricter Miami-Dade County certification, recognized as the gold standard. Required for HVHZ counties (Miami-Dade, Broward) and often spec’d by HOAs and architects elsewhere.

Design Pressure (DP) ratings

Every certified impact window has a DP rating — e.g., DP50, DP65, DP70. Higher DP = handles higher wind pressure. Your wind zone determines the minimum DP your installer must use. We pull the wind-zone map for your address before quoting and match products to that requirement, citing the specific DP rating on the quote.

Impact window styles we install.

Florida homes use several distinct window styles, each with engineering trade-offs. Here’s how we describe the most common to homeowners:

Style	Best for	Operates
Single-Hung	Bedrooms, baths, low-traffic walls	Vertical slide (bottom sash)
Casement	Kitchens, hard-to-reach openings	Crank-out (full-aperture ventilation)
Picture	Living rooms, view-walls	Fixed (no operation)
Horizontal Roller	Wide openings, modern designs	Side-to-side slide
Architectural	Distinctive elevations, transoms	Custom shapes (fixed)

For most Florida homes, a mix of styles makes sense: single-hung in bedrooms, casement at the kitchen sink, picture for view windows, architectural at transoms. We don’t up-sell one style across the whole home; we match each opening to its function.

Cost ranges by style + size.

Impact window installation cost in Florida varies considerably by wind zone, product certification, glass spec, frame material, opening size, and install complexity. Rather than quote ranges that can mislead, we provide written project quotes after a free in-home consult. Here’s what drives the price up or down:

• Wind zone. HVHZ-rated products (Miami-Dade NOA) cost 15-25% more than statewide FL Product Approval products.
• Glass spec. Clear vs. tinted vs. low-e vs. acoustic-rated — each upgrade adds material cost.
• Frame material. Aluminum frames cost more than vinyl but last 30+ years in coastal salt air.
• Opening size. Larger custom sizes cost more per window than standard sizes.
• Install complexity. Stucco walls, second-story, custom flashing — each adds labor hours.

Insurance savings: 15-40% wind credit, every year.

Most Florida homeowner’s insurance policies separate the premium into a "wind portion" (covering wind/storm damage) and a "non-wind portion" (everything else). Installing impact-rated windows triggers a wind mitigation credit on the wind portion of your premium — typically 15-40% off, depending on the inspector’s scoring and your carrier.

On a typical Palm Beach or Broward homeowner’s policy, the wind-portion credit recurs annually for the life of the windows — meaningful savings that compound over a 10-year horizon. We provide the OIR-1802 wind mitigation form your carrier needs to apply the credit.

The OIR-1802 form

Florida insurance carriers require an OIR-1802 Wind Mitigation Inspection Form to apply the credit. We complete and submit it for every install — signed by a licensed inspector, documenting your roof, windows, doors, and code-compliance details. Carriers we’ve worked with on the OIR-1802 process include Citizens, FedNat, Olympus, Tower Hill, and Florida Peninsula, among many others.

The install process, week by week.

1. Week 0: Free in-home consult. We measure every opening, walk the home, listen to your priorities, and explain trade-offs.
2. Week 1: Engineered quote with FL Product Approval / NOA numbers cited per opening, DP ratings, frame finishes, and total all-in price.
3. Weeks 2-3: Contract signed; we pull permits with your municipality (we own this step end-to-end).
4. Weeks 3-10: Custom manufacturing lead time — varies by manufacturer (CWS or ES Windows), spec, and quantity.
5. Week 11: Install: 1-3 days on-site for most residential whole-home installs. In-house crews on payroll, no day-labor.
6. Week 11 + a few days: Final municipal inspection. We’ve passed first-time inspection on 100% of our installs since 2007.
7. Week 12: OIR-1802 form submitted to your insurance carrier. Wind mitigation credit applies on your next bill.

How to hire an installer who will pass inspection.

The single biggest cost overrun in Florida impact window installs is inspection failure. A failed inspection delays your insurance certificate by weeks, costs additional labor, and often reveals deeper installer competency issues. Two-thirds of Florida impact window delays come from inspection failures.

Five questions every Florida homeowner should ask before signing

1. What is the FL Product Approval or Miami-Dade NOA number for the windows on this quote? A real installer will have the number on the quote already.
2. What’s your inspection sign-off rate? If they don’t track this number, they’ll fail.
3. Are your installers W-2 employees, or day-labor subs? The difference shows up in install quality.
4. Will you complete the OIR-1802 form for my insurance? Should be yes, free, included.
5. What’s your Florida contractor license number? Should be cited on every email and quote.

At Access Impact our license number is CGC1525402 (Florida Certified General Contractor), with a secondary FL Roofing Contractor license CCC1337755. We’ve passed first-time inspection on 100% of installs since 2007 — over 2,000 Florida homes.

Frequently asked questions.

How long does an impact window install take?

10-12 weeks total: 4-8 weeks of custom manufacturing lead time, then 1-3 days on-site for residential whole-home installs.

Do impact windows really reduce insurance premiums?

Yes. For most Florida homeowners, impact-rated windows + doors trigger a 15-40% credit on the wind portion of homeowner’s insurance — recurring annually. We file the OIR-1802 form for every install.

Do I need impact windows in every opening, or just some?

Florida code requires the full opening envelope (every window + door) to be either impact-rated OR covered by approved shutters at all times during hurricane season. Most homeowners go full impact to avoid the shutter dance.

What’s the difference between FL Product Approval and Miami-Dade NOA?

Both are valid. FL Product Approval is the statewide certification path. Miami-Dade NOA is the stricter HVHZ-area certification, often spec’d outside HVHZ as a gold-standard upgrade.

Do you serve my area?

We install impact windows + doors across Palm Beach, Broward, Martin, St. Lucie, Lee, and Collier counties from offices in Deerfield Beach and Fort Myers.