Continue until the mold and mildew are gone.
Rinse the surface off with a hose or clean bucket of water and allow to completely dry in the sun.
If required, follow the above steps for a general clean.
Can I Wash my Umbrella Canopy in a Washing Machine?

If you have a large capacity machine, and are able to remove the canopy from the umbrella frame, you can wash your canopy in your washing machine, Cold water only. Depending on wash load size, use normal amounts of mild laundry detergent and add 8 ounces (1 cup) of bleach.

Air dry only. Do NOT put the canopy in the dryer. Allow the canopy to fully dry in the sun. You can put the cleaned canopy on the frame while still damp to allow it to dry taut.

General Outdoor Umbrella Care Tips

it’s important to clean your outdoor umbrella regularly. Patio and backyard umbrellas

get exposed to rain, sun, dirt, debris and pollutants including bird droppings and tree sap.

When not in use such, as in the off-season, patio umbrellas are best stored away under cover and protected from the elements. If you are storing your umbrella after use, make sure it has completely dried to avoid mold and mildew growth.

To keep your outdoor patio umbrellas looking great and extending their lifespan, regularly brush off dirt, debris and cobwebs. This should be done at least monthly or more if your umbrella is placed is completely exposed and/or under trees.

To avoid staining, don’t allow mildew, sunscreen or oily tree leaves to stay on the umbrella for long periods of time. Rather, follow the above care instructions.

The best way to keep an umbrella clean is by closing them when they are not in use and using an outdoor umbrella cover.
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