Awnings and Hail: What Hail Does to Fabric, Metal and Polycarbonate, and What to Do

Most hail does little to an awning: pea- to dime-size stones bounce off tensioned fabric and leave metal untouched. The risk starts at about 1 inch (quarter size), the National Weather Service threshold for severe hail, and rises steeply from there. At that size and above, hail can puncture or abrade older fabric, dent thin aluminum and crack aged polycarbonate, acrylic sheet or plain glass. For a retractable awning, the answer is simple: retract it whenever severe thunderstorms are forecast, because a cassette or hood protects the rolled fabric far better than any fabric can protect itself. For fixed and rigid awnings, material choice decides how much damage you get.

This guide covers hail specifically. For the overall picture of rain, wind, snow and lightning, start with awnings in bad weather.

Why hailstone size matters so much

Hail damage does not grow in proportion to hailstone size; it grows much faster. A hailstone's mass rises with the cube of its diameter, and larger stones also fall faster, so impact energy rises roughly with the fourth power of diameter.

That scaling explains why a fabric that has shrugged off a dozen ordinary storms can be shredded in ten minutes of golf-ball hail. Wind makes it worse: storms that produce large hail often bring strong gusts, which add a sideways component and drive stones into vertical surfaces such as valances, drop shades and side panels.

How each awning material handles hail

Two patterns matter more than the material name. First, age: UV exposure weakens fabric fibers and makes plastics brittle, so a 12-year-old canopy or a yellowed polycarbonate panel fails at hail sizes the new product would have survived. Second, tension and support: taut fabric deflects stones, while a slack or bellied canopy and long unsupported panel spans take the full hit. The materials themselves are compared in more depth in metal and polycarbonate awnings and the awning fabric guide.

Few awnings are tested for hail. Roofing products are rated under impact standards such as UL 2218 (Classes 1 to 4, using steel balls from 1.25 to 2 inches) and FM 4473; if a rigid patio cover cites one of these, it gives you a basis for comparison. Absent a rating, treat marketing words like "hail resistant" as unverified.

Protecting an awning before a hailstorm

Hail falls from thunderstorms that can develop within an hour, and in the Great Plains (from Texas north through Oklahoma, Kansas, Nebraska and eastern Colorado and Wyoming) it peaks in late spring and early summer, exactly when awnings are extended most.

1. Watch for watches. A severe thunderstorm watch from the National Weather Service means conditions favor storms that can produce hail of 1 inch or larger. Retract then; do not wait for a warning.
2. Retract fully. Seat the front bar into the cassette or hood so no fabric is exposed. Retract drop shades and side screens as well.
3. Do not rely on sensors. Wind sensors respond to movement or wind speed, and rain sensors to rain; neither detects hail, and the first stones can arrive before heavy rain.
4. Plan for absence. If you are away during storm season, keep the awning retracted, or use a smart hub to retract it remotely when an alert arrives (see smart home awning control).
5. Stay inside once the storm arrives. Do not go out to crank a manual awning in hail or lightning. A partly extended awning is cheaper to replace than an injury.

Inspecting an awning after hail

• Fabric: hold a light behind the canopy or look up from beneath on a sunny day for pinholes; check seams, hems and the valance edge; look for abraded, fuzzy patches.
• Front bar and cassette: dents in the front bar or housing can stop the awning closing fully. Extend and retract once and watch for rubbing or a front bar that will not seat.
• Arms and brackets: hail itself rarely bends arms, but the wind that comes with it can. Look for an awning that now closes crooked.
• Metal awnings: distinguish cosmetic dimpling from damage that holds water or opens seams. Chipped finish on steel parts will rust if not touched up.
• Polycarbonate and glass: look for starburst cracks, punctured multiwall skins (they fill with water and algae) and cracked edges at fixings.

Small fabric punctures can sometimes be patched, but a canopy with dozens of holes or UV-weakened fabric is usually a re-cover job; residential retractable re-covers typically run about $500 to $2,000. Repair options and costs are covered in awning repair and replacing awning fabric.

Documenting damage and insurance

Homeowners policies commonly cover hail damage to the house and attached structures, which can include a permanently mounted awning, subject to the deductible and policy terms. In many hail-prone states, policies carry a separate wind and hail deductible set as a percentage of the dwelling coverage rather than a flat amount.

To support any claim:

• Photograph the damage the same day, wide and close up, with a coin or ruler for scale. Photograph hailstones next to a ruler if you can safely collect some.
• Note the date and time; storm reports from the National Weather Service and NOAA's Storm Events Database corroborate hail size and location.
• Prevent further damage (retract, remove loose fabric, cover holes) but keep damaged parts until the adjuster has seen them.
• Get a written repair or replacement estimate from an awning company, and ask your agent how your policy treats awnings before assuming coverage. RV awnings fall under the RV policy instead.

Choosing an awning for hail country

• Retractable owners: choose a full cassette and a motor, keep fabric in good condition, and retract on every severe thunderstorm watch.
• Permanent covers: prefer solid polycarbonate, heavier-gauge or ribbed metal, or laminated glass over thin flat aluminum, multiwall panels or acrylic sheet. Ask whether the product cites an impact rating.
• Not a good fit: fixed fabric awnings left out all season in the hail belt, and budget polycarbonate door canopies, which tend to use thin sheet that ages brittle.

Hail usually comes with damaging wind; the retraction rules for that side of the storm are in awning wind ratings and the storm preparation checklist.

Frequently asked questions

Can hail damage an awning?

Yes, once stones reach about 1 inch (quarter size) or larger. Severe hail can puncture or abrade fabric, especially older UV-weakened canopies, dent thin aluminum and crack brittle plastic panels. Small hail rarely causes harm to a taut, sound awning. Impact energy rises roughly with the fourth power of hailstone diameter, so 2 inch hail strikes about 16 times harder than 1 inch hail.

Should I retract my awning when hail is forecast?

Yes. Retract a retractable awning fully when a severe thunderstorm watch is issued, not when the storm arrives, because hail and strong gusts can start before heavy rain. Wind and rain sensors do not detect hail. Once the storm is overhead, stay indoors rather than going out to crank a manual awning.

What awning material is best for hail?

For permanent covers, solid polycarbonate, laminated safety glass and heavier-gauge or ribbed metal resist hail best. Thin flat aluminum dents, multiwall polycarbonate can be punctured, and acrylic sheet cracks. For fabric, vinyl-coated polyester tolerates impact somewhat better than acrylic, but the best protection for any retractable is to be closed in a cassette.

Does homeowners insurance cover hail damage to an awning?

Often, for permanently attached awnings, subject to your deductible and policy terms. Many hail-prone areas use a percentage wind and hail deductible, which can exceed the cost of an awning repair on its own, so include the awning in any claim with roof or siding damage. Photograph damage the same day and keep damaged parts for the adjuster.

Can a hail-damaged awning fabric be repaired?

A few small punctures in otherwise sound fabric can often be patched by an awning shop. Widespread holes, abraded areas or fabric already weakened by years of sun usually mean replacing the canopy, typically about $500 to $2,000 for a residential retractable. Check the frame, front bar and cassette at the same time, since dents can stop the awning closing properly.

Sources and further reading

• NOAA National Severe Storms Laboratory: Severe Weather 101, Hail
• National Weather Service: severe thunderstorm watch and warning criteria (severe hail defined as 1 inch diameter or larger)
• NOAA National Centers for Environmental Information: Storm Events Database
• Insurance Institute for Business and Home Safety (IBHS): hail research and guidance for homeowners
• UL Standards and Engagement: UL 2218, Impact Resistance of Prepared Roof Covering Materials