Use a soft brush to clean off dirt and debris before storing. Gently scrub off any stains or bird droppings with a sponge and water. Use a mild mixture of water and non-lanolin soap if needed.
Treat existing mold and mildew with a mixture of water and non-lanolin soap. Use a soft brush or sponge to scrub the affected area. If possible, avoid using bleach, which can ruin the color and make the canvas less waterproof.
Dry the canvas thoroughly before storing the trailer, to prevent mold and mildew. Place the trailer outside or in a well-ventilated area.
Avoid rips and tears in the canvas by checking for sharp objects inside the trailer and campground. Use sandpaper to dull any sharp metal edges inside the trailer.
Repair any holes as quickly as possible to prevent leaking and forestall rodents from entering. You can purchase a canvas repair kit with patches and glue from your camper manufacturer.
Waterproof the canvas with a waterproofing spray or wax made specifically for pop-up campers, available from your camper manufacturer or camping supply store. Allow the canvas to dry completely before storing the trailer.
