Roofing Wind Damage
Tested and Rated for 120 mph Winds
Most roofs don’t fail in a storm because the material is weak — they fail because the wind finds an edge and peels them apart.
That’s the whole story of wind damage. An asphalt shingle is a flap held down by a strip of adhesive and a few exposed nails; once a gust lifts one tab, the wind gets underneath and unzips the roof. The fix isn’t a thicker shingle — it’s a roof with no edge to lift, which is exactly how Interlock is engineered, as we explain in why aluminum roofs are so strong.
Interlock panels lock into one another on all four sides with hidden fasteners, then the whole field is mechanically tied to the deck. The result is a roof rated and warranted to 120 mph and approved for the most demanding hurricane codes in the country — across every profile.
Tested and warranted to 120 mph (193 km/h) — strong enough to survive a Category 2 hurricane.
What wind speed can a metal roof withstand?
Wind destroys roofs by catching an edge and peeling it back, which is why asphalt shingles tear off in storms. Interlock panels lock together on all four sides with concealed fasteners, leaving no edge for wind to grab. The system is tested and warranted to 120 mph (Category 2 hurricane strength) and Florida Building Code approved for High-Velocity Hurricane Zones — the toughest wind standard in the U.S.
Rated and Warranted to 120 MPH
Interlock roofing systems are tested and warranted to resist sustained wind speeds of up to 120 mph (193 km/h) — fast enough to ride out a Category 2 hurricane. That’s not a marketing figure; the system carries Florida Building Code product approval (FL7263) that includes the state’s High-Velocity Hurricane Zones, the most stringent wind-uplift standard in the United States. Wind-resistance testing has even simulated 110 mph winds using an airplane turbine to confirm the panels stay locked under load.
The Four-Way Interlocking Design
Wind resistance is a design problem, not just a material one. Each Interlock panel mechanically locks to its neighbors on all four sides, and the fasteners are concealed beneath the interlocks rather than exposed on the surface. With no lip, tab, or screw head sticking up, the wind has nothing to catch — it simply slides across the roof. Compare that to asphalt, where every course presents an exposed edge and every shingle relies on a thin adhesive strip and exposed nails that loosen over 15–20 years.
Why Metal Beats Shingles in Wind
Asphalt shingles are rated by how well their adhesive resists peeling, and that adhesive degrades with age and UV. Interlock’s strength comes from interlocked geometry that doesn’t depend on glue. The panels are also aircraft-grade aluminum — light but rigid — so they don’t flap or fatigue in repeated gusts. The same logic makes the system a standout in salt-and-storm coastal climates, which we cover in aluminum roofing for coastal homes.
Proven in Real Storms
Lab numbers matter, but field history is the real test. In a January 2000 windstorm with 120 mph gusts, a 1997-installed Interlock roof came through with zero damage — while a neighbor’s conventional shingle roof was destroyed. Stories like that are common wherever Interlock roofs meet serious weather, from Pacific Northwest windstorms to hurricane-exposed coastlines, and they’re the reason the brand was chosen for the most extreme environment on Earth, as told in our Antarctic science base case study.
Wind, Rain, and Everything That Comes With It
A windstorm rarely arrives alone. The same four-way interlock that resists uplift also blocks wind-driven rain from being forced under the panels from any direction, and the panels carry UL 2218 Class 4 impact resistance — the highest rating — against the debris and hail a storm throws. For homes that also face heavy winter weather, the system’s smooth, shedding surface helps with snow load too, as covered in the effects of snow on your roof.
Peace of Mind, Backed for Life
A roof you don’t have to worry about in a storm is worth a great deal. Interlock backs its wind performance with the Guardian Lifetime Limited Warranty — nonprorated for the original owner and transferable to the next — so the protection travels with the home. If you live where the wind blows hard, request a free quote and put a roof on your house that’s engineered to stay there.
Frequently Asked Questions
What wind speed can an Interlock metal roof withstand?
Interlock roofs are tested and warranted to resist winds up to 120 mph (193 km/h) — Category 2 hurricane strength — and are Florida Building Code approved for High-Velocity Hurricane Zones.
Why do metal roofs resist wind better than shingles?
Interlock panels interlock on all four sides with concealed fasteners, so there’s no exposed edge for wind to catch and peel. Asphalt relies on aging adhesive strips and exposed nails that fail over time.
Are there real-world examples?
Yes. In a January 2000 windstorm with 120 mph gusts, a 1997-installed Interlock roof had zero damage while a neighbor’s shingle roof was destroyed.
Is the roof approved for hurricane zones?
Yes. Interlock carries Florida Building Code product approval (FL7263) that includes High-Velocity Hurricane Zones — the most demanding wind-uplift standard in the U.S.
Does wind-driven rain get under the panels?
No. The four-way interlock seals the panels to each other from every direction, so wind-driven rain can’t be forced underneath the way it can with lapped shingles.
Is the wind performance warrantied?
Yes. It’s backed by the Guardian Lifetime Limited Warranty, which is nonprorated for the original owner and transferable to a second owner.
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Last updated June 8, 2026 · Reviewed for accuracy by the Interlock SEO Desk.