Our soft-washing method uses a 2-step process where the siding is first treated with a detergent that contains a hint of bleach. The mold will die off and dissolve before any rinsing happens. This act of full sterilization will allow the siding to stay clean 4-6 times longer than traditional high pressure washing. All surfaces can be cleaned using soft-wash such as vinyl siding, stucco, dryvit, aluminum, and even painted surfaces. Cement and pool decks are cleaned similarly. Most of what stains siding and cement is organic such as mold or mildew. By first pretreating the surface with an anti-microbial detergent we can more likely achieve a 100% kill ratio on the mold and mildew.