Measure the size of the hole in the canvas. Add 2 inches to the measurements; this ensures that the hole is completely covered by the patch.
Lay your repair canvas on a flat work surface; draw the dimensions on the patch with a pencil. Use a pair of scissors to cut the patch to the appropriate dimensions.
Make a second, indentical patch. This is used on the inside of the pop-up trailer.
Apply the adhesive -- found in the repair kit -- to the back of one of the patches. Press it firmly over the hole on the camper's exterior.
Apply the second patch over the hole on the interior of the pop-up camper's canvas.
Allow the patches to dry completely before folding down the canvas camper. Cover the camper with a tarp -- if it is in an outdoor location --to prevent rain from ruining the patch before it dries.
