Joe. Hi. all you have to do is 3 of sand. i of cement and water, the trick is the water, count how much water you use on each mix, if its to dry, then add a little water, if its too wet then less. If you use a sharp sand ( gritty) then I use 4 sand or if its a clay type sand then 3. but I'm not a bricky, so try it first ( and see if its ok for you,) John 2000.