NEVER LET YOUR ROOF BE PRESSURE WASHED! Moss Boss Rinses away dead moss and debris @ 900-1200 psi. Moss Boss specializes in the PROFESSIONAL , NON TOXIC ,SOFT RINSE option for Moss Removal and Prevention on all surfaces . Moss Boss is Alaska ONLY MOSS EXPERTS. Moss Boss was created back in 2017 to give homeowners a SAFE , NON-TOXIC option to extend the life of rooftops. We did over 2 years of research before opening our doors. From new construction Moss Prevention to Moss Removal on a 40 year old roof, Moss Boss has you covered! Previous to Moss Boss , homeowners had to rely on Window Washers and Gutter Cleaning companies that would show up with pressure washers shooting out 2250psi-4400 psi! 1500 psi is the maximum a shingle can handle!