Clean the fabric before applying the sun-proof spray. Wipe the fabric with a damp cloth to remove soil stains and allow the fabric to dry thoroughly afterward.
Lay the fabric on a clean, flat surface in a well-ventilated area. Spray the sun-proof product onto the fabric. Continue spraying until the fabric feels evenly wet. Overlapping during spraying is acceptable.
Check the fabric after spraying for excess drips and droplets of sun-proof spray. Dampen a sponge with a small amount of sun-proof spray and wipe these areas, gently.
Allow the fabric to air-dry completely. Sprinkle a few drops of water onto the fabric after drying. If the water beads, the sun-proof coating is working. If not, spray a second even coat and allow it to dry.