[robvander]

I want to parge my exterior walls. However, the previous owners painted the concrete blocks with numerous layers of paint. Unfortunately, nothing I do will fully take the paint off. Do I have to remove the paint before parging and if so any ideas on how to get rid of the paint.

[ballengerb1]

You might want to read this just to help brush up on your technique. Parge the ugly out of your concrete wall by Bill Leonard Issue #57 If you have used paint remover and a pressure washer the remaining paint is well adhered and you can parge over it. Wire brush it well and rub the wall with a small piece of broken concrete block or a very coarse sand paper on a block of wood. Rinse this dust off and then parge, or parjay.

[jimmckenney]

Look at this product http://www.larsenproducts.com/weldcrete.htm

Expect to pay about $40/gal