As for cracks in drywall, you ought to utilize a scraper to widen the crack and area drywall tape in excess of it. Apply a joint or drywall compound and thrust throughout the crack. Smooth over with a sponge. Then just sand, key, and simply paint it around. Sign on http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=2474320