Winterizing Your Full Cassette Awning: Essential Cold-Weather Care Tips

I'll never forget the call I got one February from a customer in upstate New York. A wet snowstorm had dumped 14 inches overnight, and his awning — left extended — had collapsed under the weight. The front bar bent, both arms snapped at the elbows, and the motor burned out. Total damage: $2,300. The worst part? It was completely preventable. Winterizing your full cassette awning takes about 30 minutes and can save you thousands. Here's what I do every fall.

The Full Cassette Advantage
This is where full cassette awnings really earn their price tag. When you retract a full cassette unit, the fabric, arms, and front bar all disappear inside a sealed housing. Unlike semi-cassette or open awnings, where fabric stays exposed when retracted, the cassette protects against snow, ice, wind-driven rain, and UV damage during the off-season. If you live anywhere that drops below freezing, a full cassette design is worth the extra 400–600 over a semi-cassette model.

Step-by-Step Winterization
1. Retract Fully

This seems obvious, but you'd be surprised. Extend the awning, check for anything caught in the arms, then retract until the motor clicks off (or the crank hits its stop). The front bar should sit flush against the housing with no gap.

2. Clean Before Storing

Don't store a dirty awning. Bird droppings, pollen, and sap left on the fabric for 4–5 months will stain permanently. Do a full clean (mild soap, lukewarm water, soft sponge) and let it dry completely — at least 3 hours before retracting. Storing a damp awning invites mold.

3. Disconnect Motor Power

For motorized units, turn off the breaker or unplug the transformer. Somfy motors don't draw power when idle, but disconnecting prevents accidental activation during storms and protects against winter power surges.

4. Inspect Hardware

Check all mounting brackets, bolts, and arm pivots. Tighten anything loose — winter wind vibration makes it worse. I carry a 13mm socket and 10mm Allen key for most brackets. Replace any rusty mounting bolts; they're about $3 each at any hardware store.

Snow Load Warning
Let me be clear: never leave your awning extended during a snow event. Even light snow is heavier than you think. A single inch of wet snow on a 13-foot awning adds roughly 65 pounds of load. Six inches adds nearly 400 pounds. No residential awning is engineered for that.

The wind sensor should handle automatic retraction, but don't rely on it. If snow is forecast, retract manually until the storm passes.

Wind Sensor Settings for Winter

Most motorized awnings come with a wind sensor (Somfy Eolis 3D is common). During summer, I set the threshold at 25–30 mph. For winter, I drop it to 15 mph. Winter storms bring gusty winds that can damage fabric even without snow, and cold makes it less flexible and prone to tearing. Lowering the threshold costs nothing and adds real protection.

Manual Models: Don't Forget the Crank
For manual awnings, remove the crank handle and store it indoors. I've seen too many cranks left outside all winter — they rust, gears seize, and you're looking at a 35–50 replacement come spring. Takes 10 seconds.

Regional Differences
Where you live shapes your winterization routine:

Florida and the Gulf Coast: No freeze cycles, but hurricane season runs through November. Keep the awning retracted during named storms and verify your wind sensor before October.

 
Mid-Atlantic (Virginia to New York): Full winterization as described above. The freeze-thaw cycles are what crack brackets and seize pivots.
Minnesota and the Upper Midwest: Do everything above, plus consider a winter cassette cover if your awning is mounted high and exposed to driving snow. A custom cover runs 60–90.

 
Spring Reactivation Checklist
When temperatures stay consistently above 40°F, it's time to reactivate:

Reconnect power and test the motor.
Extend fully and inspect the fabric for any winter damage.
Clean the fabric (a light wash is usually enough).
Lubricate pivot points with dry silicone spray.
Reset the wind sensor to 25–30 mph.
Test full extension and retraction three times.

 
FAQ
Q: Can I leave my awning extended during a light snowfall?

No. Even an inch of wet snow can add 60+ pounds to a standard awning, and you can't predict when light snow turns heavy. Retract at the first sign of precipitation when temperatures are below 40°F.

Q: Do I need to remove the motor for winter storage?

No. Somfy and other modern motors are sealed units designed to stay in place. Just disconnect power. Removing the motor risks damaging the wiring harness.

Q: My awning iced over while retracted. What should I do?

Leave it closed until ice melts naturally. Don't chip ice off the cassette — you'll dent the housing. Once thawed, inspect the cassette seals for gaps that let moisture in.