If you’re cleaning an RV awning, you may only need a step ladder instead.
Leaving debris on your awning can cause damage and make it more likely for mosses and mildew to form. Mildew looks like gray or black powder that sticks on your awning even after you brush it. [4] X Research source Green or brown splotches on your awning are either moss or lichens. You can still get rid of both the same way you’d remove mildew.
The water will make it easier for you to spread the cleaning solution so the mildew comes off quicker.
Since bleach can irritate your skin, put on a pair of rubber gloves before you start cleaning. For a natural alternative, use white vinegar. [7] X Expert Source Mike KapurCertified Mold Assessor & Home Inspector, Sonic Home Inspections Expert Interview. 19 August 2020. You can instead use a commercial mold and mildew remover if you don’t want to mix your own. Test your cleaning solution on an inconspicuous spot of your awning to make sure it doesn’t make the colors bleed. Let the solution sit for 20 minutes before rinsing and checking for discoloration. Never mix bleach or other cleaning solutions with soap, as it can create toxic gas. [8] X Research source
Your ladder could be slippery if you spill any of your cleaning solution on it, so keep both feet planted so you don’t lose your balance. If you aren’t able to reach parts of your awning, use a long-handled sponge mop instead. [10] X Research source
Avoid letting the cleaner sit for 20 minutes or longer, since it may discolor your awning.
If the cleaning solution starts to dry anywhere, re-soak the area before you scrub. Avoid using brushes with stiff bristles since they could damage the finish or fabric.
Cleaner residue left on your awning could cause fabric discoloration when it’s left out in the sun.
Rolling up or putting your awning away while it’s still wet makes it easier for mold or moss to grow back. If there’s any mildew left on the awning, soak it in your cleaning solution and gently scrub it again. It may take a few cleanings to completely remove stubborn mildew or mold.
If you forget to reproof your awning, mold and mildew will grow faster since there isn’t a waterproof barrier over the fabric.
Hosing down the awning removes dirt, organic matter, and other things that could lead to mildew growth.
You only need to use bleach if you notice mildew or mold growing on your canvas.
