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Question DetailsAsked on 7/24/2013

How do you clean off dirt and mold from a canvass awning.

My awning is a Marygrove awning. It is striped I have tried to clean the valance and haven't been able to get the dirt and mold offf of it.

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2 Answers


If this is a retractable, you may need help from an awning contractor. Either way, it needs to come off to be cleaned. If heavily molded, may not be salvagable.

You need to be able to lay it out flat (driveway) somewhere on a hard surface where the mold and bleach will not discolor the underlying surface (avoid brick and decorative patios and lawn, for instance), then scrub it vigorously on both faces (rinsing awning AND underlying surface after each side) with a stiff scrub brush and a mold killing solution - a chlorine containing detergent, or laundry detergent with chlorine bleach and Borax (NOT Boraxo soap - pure borax, found in laundry powder detergent aisle) added as recommended for jeans or canvas, rinse thoroughly afterwards, then rescrub with a borax solution per instructions on the box, rinse good, MOVE AWAY FROM WHERE YOU WERE CLEANING to dry - the faster the better, preferably on a rope or clothesline.

Some people use rubbing alcohol instead of the bleach - I don't know which works better, never having used that.

Rinse off cleaning surface well - clear off driveway or patio or whereever, to avoid bleaching of surface.

Answered 7 years ago by LCD


I should have mentioned - if you are not removing the awning from the retractor, keep as much of the washing fluids out of the retractor tube and mechanism as possible. Obviously, preferable to remove the fabric from the roller if that can be done reasonably.

I also forgot to say - if you don't want to do this yourself, many RV service and repair companies can do it, as can many tent and tarp companies. You can also get it done by someone like ServiceMaster - make sure they have experience with awnings, not just rugs.

Answered 7 years ago by LCD

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