Plaster Over Concrete Wall
If the wall has been painted and the paint is peeling or flaking all of the paint.
Plaster over concrete wall. However avoid saturating the masonry either by excessive spraying or by exposure of uncovered masonry walls or units to rain. The texture of the concrete walls should be sufficiently rough so the plaster will adhere to it. In addition if plastering over an interior smooth surface such a concrete or cinder block wall you can also use a plaster bonder to improve adhesion of the base coat. Cement plaster can and is also also called stucco mud or bement plaster mortar i m sure there are about another 10 different names folks from all over the world call cement plaster but hopefully you get the idea.
Plaster is applied to concrete masonry surfaces in two or three coats consisting of basecoat s and a finish coat. How to repair plaster over concrete walls step 1. Check out our recommended tools right here. Your walls should be free of paint oil and dust so the plaster can bond properly.
Use a wire brush to clean stains left by the mold or mortar joints. In this video keep in mind these same methods also work on how to apply cement plaster over concrete the same system work also on cinder block walls. The mixture can be placed. Before you begin to plaster your concrete walls you need to remove peeling paint and flaking bits of old plaster.
Caulk any cracks. The loose sections should be easy to remove by hand. Apply a thin. Prior to application of the basecoat uniformly pre moisten concrete masonry surfaces to aid in curing of the plaster.
Remove any crumbling or damaged sections of plaster. Use 7 8 inch concrete screws. Prepare the concrete wall. Caulk cracks and kill any mold on the walls.
In this video i am showing one way a person can make their. Blend a bag of plaster mix with water according to the manufacturer s instructions. Cement plaster is usually made up of portland cement sand and lime. To prepare the surface for the plaster of paris you would first need to apply a scratch coat base coat.
Install metal lath over the painted concrete wall if you don t want to sandblast.