Let us face it, pressure cleaning your roof has not been satisfactory to you in the past as in some cases the roof was damaged and worst of all it did not even last a year before the roof needed cleaning again! Cleaning alone is not enough that is why ABLE Pressure Cleaning uses a special process to ensure that your roof stays clean for more than a year! ABLE Pressure Cleaning has developed a special formulation of cleaning agents and algae preventatives that controls the growth of algae and the resulting mold, mildew, and fungus for 2 years with just one application!Forget about 6 or 12 month treatment plans, every 2 years is all you need!