Pour a mix of 80 white distilled vinegar and 20 water into a spray bottle let the area dry out put on a protective mask goggles and gloves to protect yourself from mould spores spray the vinegar mix onto the whole awning not just the affected area.
Cleaning canvas awnings vinegar.
You can also use a vinyl or fabric cleaner if you wish.
There are awning cleaning supplies you can purchase or you can prepare your own.
Make sure to treat the canvas after it is cleaned.
Mixing your favorite laundry detergent in a bucket of hot water and scrubbing your awning is a safe way to clean the fabric without damaging it.
If you need more cleaning solution simply double or triple all the quantities.
For fixed awnings rollup awnings and retractable awnings made of canvas or outdoor fabrics use a mild laundry detergent and lukewarm water.
Fill a spray bottle with white vinegar.
Use a medium or hard bristled brush to sweep away all dust dirt and debris.
A camper canvas can be cleaned by starting off dry scrubbing using special cleaning products vinegar or even homemade cleaners.
Fill a spray bottle with the mixture from the bucket.
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.
Equal parts will probably work best though you ll want to make sure your mixture will work in a spray bottle.
Scrub it lightly with a soft brush using a mixture of salt lemon and hot water.
To clean metal awnings use a metal cleaning solvent and water.
Avoid using detergent soaps or bleach which is harsh on canvas and tough to rinse out.
Before you clean a canvas awning including acrylic or vinyl always test the awning cleaning solution i n an area that isn t visible to make sure it won t damage the material.
Stir the solution with a soft bristle brush until it s completely combined and sudsy.
Depending on your awning material you will need to use different cleaning solutions.
Alternatively use a shop vacuum to clear away all dust dirt and debris.
Vinegar vinegar will remove dirt and mildew while killing mold spores and other bacteria that may be on the awning.
The best approach and chemical will depend on whether you are cleaning for mildew dirt or simply maintaining the canvas.
Make a cleaning solution of dish soap water and borax.
In a large bucket mix 4 cups 950 ml of warm water 1 teaspoon 4 9 ml of dishwashing soap and 1 tablespoon 15 grams of borax.