Darolyn I have done this to about 4 different rooms. You need to get Texture paint. It comes in 1 gallon and 2 gallon cans. You also need a special roller for this it has little ridges in it. It takes a little longer than just painting but it covers up any cracks you may have. I suggest if you are doing a ceiling to get a paint catcher that the roller attaches too as it is very messy to do.