Next apply a small dot of normal detergent to the mildew stain and use a soft bristled brush such as an old toothbrush to scrub the stain away.
Cleaning mold off fabric awning.
For fixed awnings rollup awnings and retractable awnings made of canvas or outdoor fabrics use a mild laundry detergent and lukewarm water.
Spray the underside of your awning with a soap and water mixture and then roll it up let it sit for an hour.
Use a circular motion to work the solution into the awning fabric.
Use a medium or hard bristled brush to scrub the mold from the hydrogen peroxide soaked area.
Awnings are susceptible to a growth of algae mold and mildew just like anything else exposed to the outside elements for a continuous amount of time.
Store bought solutions you can use a store bought solution like valterra s rv awning cleaner v88542 which is designed to remove dirt mold mildew and tree sap from your awning as well as condition the fabric.
Depending on your awning material you will need to use different cleaning solutions.
To remove mildew from a canvas awning you ll need a cleaning solution made with 1 cup 237 ml bleach cup 59 ml of mild liquid soap and 1 gallon 3 8 l of cool water.
If you use a store bought cleaner be sure that it is designed specifically for awning fabrics.
Once your fabric has had a chance to soak remove it from the solution and gently squeeze it over a sink or drain to remove the excess water.
X research source if you need more cleaning solution simply double or triple all the quantities.
Limit the size of your work area so the soap does not dry on the awning.
You can also use a vinyl or fabric cleaner if you wish.
Fill a bucket with water as hot as you can stand to touch.
Scrub the awning with a stiff brush saturated with the soap solution.
Washing with soap and water is usually not enough to completely remove the green stain of algae so a concentrated solution such as hydrogen peroxide is necessary.
Allow the hydrogen peroxide to work into the mold for 15 minutes.
How to clean sunbrella fabric.
Roll the awning back out rinse it off and let it dry.
Continue to scrub until all mold is removed.
To clean metal awnings use a metal cleaning solvent and water.
You spend about 5 minutes working on it and it comes out like a brand new dust free awni ng.