Surface retarder exposes aggregate color and texture
Spray-applied, water-soluble Top-Stop surface retarder slows setting of surface mortar in concrete to expose natural color and texture of aggregate. Non-flammable formula can be used on floor slabs, sidewalks, and more. Roughens bonding surfaces for subsequent concrete toppings. Available in 1-gal. jugs and 5-gal. pails.