How To Clean Sunbrella Fabric Umbrella. Also, use the mild detergent for a mild wash. Allow fabric to air dry.
Prepare a cleaning solution of water and mild soap such as woolite ® or dawn ® dishwashing liquid. To clean sunbrella while still on an awning frame: How to clean your sunbrella patio umbrella while it's on the frame.
The soap you use depends on the size of your cover.
Sunbrella can also be machine washed in cold water with a mild detergent. Allow mixture to soak for up to 20 minutes. Rinse again thoroughly to take off all soap residues. Use a sponge or soft bristled brush to agitate fabric if necessary and rinse thoroughly to remove all soap residue.