Heavy mildew & mold build up on North side of home in NH. Professionally removing it doesn't mean just pressure washing only. Safe, environment friendly detergent to eradicate the mold or mildew and good old fashioned elbow grease soft brush scrubbing will ensure that it keeps that unsightly stuff from coming right back within a few months. A surface sealant that we can apply also protects the clean surface from mildew/mold regrowth for a significantly longer time than without, keeping your home looking great longer!