CLEASBY MASTIC ROOF GUN Category: Spray Equipment Product Information Cleasby Mastic Roof Gun with 1/2” high pressure Graco pistol grip spray gun. Related Products GMAX II 7900 STANDARD SERIES Read more HIGH PRESSURE SWIVEL Read more HJ4520 COLD PROCESS HYDRAULIC SPRAYER Read more HJ1804 DOUBLE POWER ROLLER SYSTEM Read more