What is Gunite?

Gunite is a dry mixture of cement and aggregate that is combined with water at the nozzle, as it is sprayed through a gun at high pressure. To give it strength and durability and so it has a place to adhere, gunite is usually applied over steel mesh or steel rebar. In foundation repairs, gunite can be shot directly over damaged, cracked concrete and crumbling rubble walls, leaving a smooth, even surface. Shotcrete is not quite the same thing as gunite. Like gunite, it is sprayed with a gun, but shotcrete uses wet, ready-mixed concrete, which sags when applied to vertical or overhead surfaces (1 – 3+ slump). Gunite does not sag or slump (0 slump), making it perfect for carving, stamping and sculpting.

Click here to see a movie clip of gunite application to a small water garden.