My husband and I just bought a concrete block house. I've lived in them before and really like the low maintenance. There aren't any moisture problems with the blocks, we'd just like to make them smooth without putting up drywall or wallboard. The windows have a lovely curved shape around them where the block meets the window and we don't want to lose that by putting up sheet rock or board. What can you use to resurface the prison-style block pattern? The kitchen looks like it has something on it that makes the wall smooth. It's all painted and I don't think I can remove the paint. HELP!!