Colorado gives siding a rough life, so House Washing is usually needed more often than people expect along the Front Range. Intense high altitude UV bakes dirt and organic film into the finish and fades painted surfaces faster than it does at lower elevation. Summer hail drives grit into the siding and leaves pitted spots that hold dirt. Wildfire smoke haze settles a fine ashy layer over entire neighborhoods that rain alone will not rinse off. Heavy pine and cottonwood debris leaves sap, pollen and cottony fluff packed into corners and gutter runs. Freeze thaw cycles pull moisture and grime deeper into stucco and siding seams through the winter, and road sand and magnesium chloride de icer get thrown up onto the lower walls, foundations and garage surrounds all season long, leaving that chalky white haze along the bottom of the house. Most Parker and Castle Rock homes look their best on a yearly schedule, and spring or early fall is the sweet spot. If you are getting ready to sell, hosting family, painting, or you have noticed dark streaking under the eaves, that is your sign to book house washing now.