Impact-rated window installed on a Florida coastal home
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Residential · 6 min read · Published February 18, 2026 · Updated June 5, 2026

Florida Impact Windows: What to Buy, What to Skip, and What Insurance Actually Discounts

TL;DR

Buy laminated impact glass with an aluminum or vinyl frame rated for your county's design pressure. Skip shutters as a long-term solution. Most Florida carriers discount premiums 20 to 45 percent for full impact-window homes, which usually pays back the install in 7 to 12 years.

01

What makes a window 'impact rated' in Florida?

Impact-rated windows pass ASTM E1886 and E1996 testing: a 9-pound 2x4 fired at 34 mph at the glass, followed by 9,000 cycles of pressure to simulate hurricane wind. Florida Building Code requires impact glazing in HVHZ (Miami-Dade and Broward) and design pressure ratings appropriate to the county everywhere else.

02

What brands do you recommend?

PGT WinGuard and CGI Sentinel are the workhorses, well-priced, widely stocked, and proven in storms. ES Windows and Andersen Stormwatch fit higher-end aesthetic budgets. The brand matters less than the design pressure rating and the installer.

03

Aluminum frame or vinyl frame?

Aluminum is stronger, thinner sightlines, and slightly higher U-value (less efficient). Vinyl is more energy efficient but bulkier frames and limited dark color options because they warp in direct Florida sun. For coastal homes within five miles of saltwater, choose aluminum with a marine-grade finish.

04

How much do insurance carriers actually discount for impact windows?

Florida carriers typically discount wind premium 20 to 45 percent for a full impact-window installation, documented on a wind mitigation inspection (form OIR-B1-1802). Partial installations get partial credit. The discount usually pays back the install in 7 to 12 years depending on home size and exposure.

05

Do shutters work as well as impact windows?

For storm protection only, accordion or roll-down shutters meet code. Long term, no. Shutters require deployment before every storm, store nothing when the power is out, do not improve daily security or noise, and earn smaller insurance discounts. Impact windows are the install-once-and-forget option.

Key takeaways
  • Impact glass beats shutters for long-term value.
  • Aluminum frames for coastal, vinyl for inland efficiency.
  • Full installs get the maximum wind mitigation discount.
  • Brand matters less than design pressure rating and installer.
  • Payback period is typically 7 to 12 years.
Written by
SunSmart Building Services
FL CCC1333286 · CBC1267462 · CVC57165
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