Profile: RTC Supply specializes in providing concrete washout systems and filter bags. Our Vinyl-Con™ concrete washout system is designed to protect the environment from water pollution. It is used by concrete contractors. This washout system is available in three sizes. Concrete washout can be set up anywhere on the construction site. Our Vinyl-Con™ wall washout is used by contractors who wash down the walls. Pressure washers wash down stucco, brick, stone and concrete. This wash water is contaminated with residue of paint and/or wash chemicals or soap. Our wall washout is affixed to the wall.