Guardian Roof Cleaner™ Approved Contractors The following approved and trusted contractors have a combined experience of over 50 years using Guardian Roof Cleaner. And they represent over 150 years of expertise in the Roofing and Roof cleaning industry. Dr. Roof 503-642-7690 www.RoofRepairBeaverton.com Fisher Roofing 503-227-ROOF (7663) www.FisherRoof.com Northwest RC Coatings, Inc. 360-977-3160 NW Surface Cleaner, Inc 503-598-0724 http://nwsurfacecleaner.com/ Home