How To Clean Sunbrella Fabric Mildew. To remove mold and mildew: Spray on entire area and allow to soak into the fabric for 15 minutes.
After cleaning with the below solutions, always rinse fabric thoroughly. To prevent accumulation of mildew, you should clean your sunbrella. While sunbrella does not promote mildew growth, dirt on the fabric can grow its own mildew.
Stain recommended cleaning solutions commercial cleaner.
Prepare a solution of 1 cup of bleach and 1/4 cup mild soap per gallon of clean water. Prepare a solution of 1 cup of bleach and 1/4 cup mild soap per gallon of clean water. Use a soft bristle brush to clean. Rinse thoroughly to remove all soap residue.