How do you remove algae from fabric awnings?
How do you remove algae from fabric awnings? Mix together in a bucket 1 part hydrogen peroxide and 6 parts water, then pour some of this mixture into a spray bottle. Step 2: Spray the awning with the solution and leave to sit for 30 minutes. Then, spray some water onto the fabric to wash away the grime. You may need to repeat this process to completely clean it.