Hurricane Prep Checklist for Impact Window Homes

Impact-rated windows and doors protect every glazed opening from wind-borne debris. That protection holds up to the design pressure rating of the product. They must be properly installed under a Florida Building Code permit to qualify. Impact windows cover the single biggest structural failure mode in residential hurricanes. That failure mode is a breach in the building envelope — the outer shell — that lets storm pressure enter. Once pressure enters, it can blow out walls or roofs. In Miami-Dade and Broward counties, all glazed openings must meet High-Velocity Hurricane Zone (HVHZ) standards. Those standards are among the toughest in the world. Impact glass must pass a large-missile impact test, a cyclic pressure test, and a water infiltration test. Only then does it earn a Miami-Dade Notice of Acceptance. Those tests include 2-inch-by-4-inch lumber projectiles fired at 50 feet per second — your windows handle that. What they do not handle: water in your pantry or carbon monoxide from a generator. They also do not stop a 200-pound oak limb on your roof or a garage door that folds inward at 110 mph.

FEMA's official hurricane preparedness framework calls for 7 days of water at 1 gallon per person per day. It also calls for a 7-day non-perishable food supply and a battery-powered weather radio. Add flashlights, a first-aid kit, and a 30-day supply of medications. Keep cash in small bills and store all critical documents in a waterproof container. None of those 8 items have anything to do with your windows. Beyond FEMA's basics, South Florida homeowners face specific regional risks. Hurricane deductibles here run 2–5% of insured home value. On a $400,000 home, that is $8,000–$20,000 out of pocket before your insurer cuts a single check. Pre-storm documentation — photos of every room and every exterior wall — is the single fastest way to accelerate that claim. The National Hurricane Center recommends taking those photos no later than 48 hours before a storm makes landfall. Cloud-back them immediately. If you received a My Safe Florida Home grant, keep your grant approval letter with those photos. It proves your protection improvements were completed and eligible.

Roughly 1 in 5 homeowners still believe they should crack a window to 'equalize pressure' during a hurricane. FEMA, NOAA, and the National Hurricane Center all confirm this is a dangerous myth. Opening a window does not balance interior and exterior pressure. It breaches your building envelope and allows storm wind to enter. That wind then pressurizes your interior and can blow out walls or the roof deck from inside. With impact windows, your building envelope stays intact as long as every opening stays closed and locked. That sealed envelope delivers an estimated 30–40% reduction in structural uplift during a major storm. Structural uplift is the upward force on the roof. That figure comes from building science research cited by the Insurance Institute for Business & Home Safety. The rule is simple: before the storm, close every window and lock every door. Engage every secondary lock on sliders. Do not open anything until authorities issue the all-clear. Your impact window installation was engineered for exactly this scenario. Let it work.

SafeGuard pulls 1,500+ building permits each year. Every single project the company touches is on permit. There is no off-permit work and no shortcuts. That matters more than most homeowners realize at claims time. When an adjuster walks your property after a hurricane, the first thing they check is permit history. Unpermitted window or door work voids the wind mitigation credit. It can also delay or reduce your claim payout by tens of thousands of dollars. A permitted impact window installation is documented in the county's system. That record is corroborating evidence that your opening protection was code-compliant before the storm. You can verify any Florida contractor's license status through the Florida DBPR contractor lookup. Do that step before signing any contract. If you are still researching whether impact windows are the right fit before the season, the best impact window buying guide walks through ratings, brands, and what to look for in a South Florida installation.

South Florida's hurricane season runs June 1 through November 30 — 6 full months. Most major storms strike between August and October. The statistical peak falls on September 10. That gives homeowners a meaningful preparation window if they start early. By April 30, schedule your wind mitigation inspection. Check whether your OIR-B1-1802 form is within 12 months of expiration. By May 15, complete tree trimming, gutter clearing, and garage door assessment. By June 1, assemble your FEMA supply kit and test your generator. Also review your hurricane deductible with your insurer by June 1. Once a named storm enters the Gulf or Atlantic within 5 days of your location, the preparation window closes fast. Tree crews, generator fuel, and plywood all sell out within 48 hours of a watch posting. Homeowners in Broward County, Miami-Dade, and Palm Beach County know this cycle well. The neighbors who prepared in May are calm. The ones who waited are in line at Home Depot at 2 a.m.

Impact windows installed more than 10 years ago may have frame seals, glazing compound, or hardware that has degraded. South Florida's UV exposure and salt air speed up that breakdown. A visual inspection takes about 30 minutes per home. Look for fogging between glass panes — that indicates a failed seal. Also look for frame paint or coating that is peeling away from the substrate. Check weep holes, which are small drainage slots at the bottom of the frame, for debris clogs. Hardware — especially multipoint locks on casements and sliders — should operate smoothly without force. If any lock requires more than moderate hand pressure to engage, the mechanism may be worn. A worn lock may not hold rated design pressure. A licensed impact door and window contractor can assess frame condition, re-glaze failing seals, and replace worn hardware before the season starts. Do not wait for a storm warning to discover a compromised frame. Repairs completed under permit before the season give you documented, corroborated opening protection going into any claim.