Dry out the patio. Be sure all the bricks are dry before laying down sand. Leftover water trapped between bricks will only encourage future moss to move in. Doing this on a sunny, warm day is the best choice for quick drying. Once the patio is dry, fill in cracks between bricks with...
you must ensure that roof shingles and tiles are not broken, chipped, or damaged, as water applied at high pressure will likely amplify the damage and seep through any cracks. Also, when using apower washer, you'll need to stand on the roof above the ...