With a little time and effort, a Goode cheap water sealer is white cement. You mix the white cement in water, making a wallpaper paste like substance. Brush it on with a wallpaper brush. After a few days, paint the walls with a good latex paint or leave it white. Was taught this by a old cement contractor and did use it in a few rentals I had and did it seven years ago in our new home. My wife did paint the walls and of cement blocks after sealing them with this mixture. RJ
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