Bob's Tip of the Day: Vinyl siding is pretty low maintenance, but snow, rain, and wind can soil its surface. To keep your siding free of grime and dirt, wash with a solution of 70 percent water and 30 percent vinegar, then rinse clean.
Clean Vinyl Siding A simple, twice-a-year rinse with your garden hose should keep vinyl siding looking spiffy. If the siding has been neglected for years, rub it down with a mixture of 3 parts water to 1 part bleach (cover your plants before you apply it). Don't use a power sprayer; the force of the water can bend the pliable material just enough to let water behind it.