The Answer: Yes, They're Identical
Hurricane windows and impact windows are the same product. The terms are completely interchangeable. There is no difference in materials, testing, certification, performance, code compliance, or insurance eligibility.
If you've been comparing "hurricane windows" and "impact windows" as two different products, you can stop. You're looking at one product with two names.
The rest of this article explains why both names exist, what the product actually is, and which related terms do refer to something different.
Why Two Names for One Product
"Impact windows" is the term used by the industry: manufacturers, contractors, building departments, and product approval databases. It emphasizes the engineering: the window is designed and tested to resist the impact of wind-borne debris. PGT's flagship line is called "WinGuard," but the product category is "impact windows" or "impact-resistant windows" in every technical document, building code reference, and product approval filing.
"Hurricane windows" is the term homeowners use when searching online. It emphasizes the purpose: you're buying them because of hurricanes. Google search data confirms this: "hurricane windows" and its variants ("hurricane impact windows," "hurricane proof windows," "hurricane resistant windows") collectively generate more consumer search volume than "impact windows" alone.
"Impact-resistant windows" is the formal terminology used in the Florida Building Code. FBC Section 1609.2 refers to "impact-resistant coverings" and "impact-resistant glazing." This is the language that appears on product approvals, permit applications, and engineering specifications.
All three terms describe the same product: laminated glass bonded to a polymer interlayer inside reinforced frames, tested to resist a 9-lb 2x4 projectile at 50 fps followed by 9,000 cycles of alternating pressure, and certified under ASTM E1996/E1886 (statewide Florida) or TAS 201/202/203 (HVHZ, with 48x stricter tear tolerance).
The Terminology Guide
Here's every term you'll encounter when shopping for hurricane protection, sorted by whether it means the same thing as "impact windows" or something different:
Same Product, Different Name
| Term | Used By | Notes |
|---|---|---|
| Impact windows | Industry, contractors, codes | Standard professional term |
| Hurricane windows | Homeowners, consumer media | Most common search term |
| Hurricane impact windows | Marketing, some manufacturers | Redundant but widely used |
| Impact-resistant windows | Florida Building Code | Formal code language |
| Hurricane-rated windows | Insurers, real estate agents | Emphasizes the certification |
| Impact-rated windows | Technical specifications | Emphasizes the testing |
| High-impact windows | Some marketing materials | Less common but same meaning |
| Hurricane glass windows | Consumer searches | Emphasizes the glass component |
Different Products (NOT the Same)
| Term | What It Actually Is | Key Difference |
|---|---|---|
| Storm windows | Secondary windows for thermal performance | NOT impact-rated; designed for cold climates; mounted outside or inside existing windows for insulation |
| Hurricane-proof windows | Marketing term for impact windows | No window is truly "proof" against every scenario; accurate term is "hurricane-resistant" |
| Hurricane window film | Adhesive polyester film on existing glass | Does NOT meet Florida Building Code; does NOT stop debris penetration; NOT a substitute |
| Tempered glass | Heat-treated safety glass | Stronger than standard glass but NOT laminated; shatters into small pieces on impact; does NOT maintain building envelope |
| Security glass | Various products for forced-entry resistance | May or may not be impact-rated for hurricanes; verify Florida Product Approval before assuming code compliance |
| Laminated glass (generic) | Glass with interlayer (any application) | Impact windows use laminated glass, but not all laminated glass meets hurricane impact testing standards |
The Storm Windows Confusion
This is the terminology trap that causes the most real-world problems. In northern states, "storm windows" are secondary windows mounted outside (or inside) existing windows to improve thermal insulation and weatherproofing during winter. They have nothing to do with hurricane protection.
If a contractor or salesperson in Florida tells you they're installing "storm windows," clarify immediately. If they mean impact-resistant windows tested to ASTM E1996/E1886 or TAS 201/202/203 with a Florida Product Approval or Miami-Dade NOA, that's the right product. If they mean thermal secondary windows, that product does not meet Florida Building Code requirements for opening protection, will not pass building inspection, and will not qualify for insurance wind mitigation discounts.
The "Hurricane-Proof" Problem
No window is hurricane-proof. The term implies a guarantee against every possible storm scenario, which no building product can deliver. A Category 5 hurricane with 157+ mph sustained winds, EF-3 tornadoes, and 15 feet of storm surge can damage any structure.
What impact windows do provide is hurricane resistance: the ability to maintain the building envelope under tested conditions (debris impact + 9,000 cycles of sustained pressure), preventing the internal pressurization cascade that causes the most catastrophic structural failures. After Hurricanes Helene and Milton (2024), zero homes built to modern Florida Building Code standards were destroyed across 358 assessed structures. The product works. But "proof" overpromises, and you should be skeptical of any company that uses the term as though it's a guarantee.
How Impact/Hurricane Windows Actually Work
Since you now know you're shopping for one product regardless of what it's called, here's what that product does:
The laminated glass consists of two sheets of glass bonded to a polymer interlayer (PVB or ionoplast/SentryGlas) under 280 degrees F and 180 PSI in an autoclave. When debris strikes the glass, the outer pane cracks and the interlayer absorbs the energy through plastic deformation. The cracked-but-intact panel stays sealed in the frame, preventing wind from entering and pressurizing the structure.
The reinforced frame (aluminum or vinyl) holds the glass in place under sustained hurricane wind pressure. Design pressure ratings range from DP +/-50 PSF (standard residential) to +125/-150 PSF (WinDoor 8100 SGD for luxury high-rise applications).
The hardware includes multi-point locks, heavy-duty rollers, and reinforced operators designed to maintain the seal under wind loads that standard window hardware cannot resist.
For the complete technical explanation, see our what are impact windows guide.
What to Look For When Buying
Regardless of whether the product is marketed as "hurricane windows," "impact windows," or anything else, verify these specifications:
Product approval. Every product must have either a Florida Product Approval (for the Wind-Borne Debris Region) or a Miami-Dade NOA (for the HVHZ in Miami-Dade and Broward). Ask for the approval number and verify it at the Florida Product Approval System or Miami-Dade Product Control.
Design pressure (DP) rating. Must meet the requirements for your specific location, building height, and window position. Your installer calculates this. Don't accept a product that doesn't meet the engineering requirement for your opening.
Impact test level. Large missile (9-lb 2x4 at 50 fps) for windows below 30 feet. Small missile (steel ball bearings at 130 fps) for above 30 feet. In the HVHZ, the large missile test is required at all heights below 30 feet with additional structural shots.
Energy performance. U-factor and SHGC ratings determine energy efficiency. ENERGY STAR Version 7.0 for the Southern Climate Zone requires U-factor 0.32 or lower and SHGC 0.23 or lower. Impact windows with insulated glass (IGU) and Low-E coating meet or exceed these thresholds.
Frame material. Aluminum vs. vinyl affects cost (vinyl is 15-30% less), energy performance (vinyl insulates better), structural capacity (aluminum handles higher DP), and HVHZ availability (aluminum has the broadest NOA selection).
For pricing details, see our impact windows cost guide.
Next Steps
- Get a free estimate for impact windows (same product as "hurricane windows") matched to your wind zone and budget.
- Learn whether impact windows are required where you live and what product approval your zone requires.
- See detailed pricing in our impact windows cost guide.
- Compare against hurricane shutters if you're weighing options.
- Check eligibility for the My Safe Florida Home program (grants up to $10,000) and financing options.
