Thanks to everyone that replied to my post back at the beginning of April regarding using cultured stone around my fireplace (interior). I found that they sell it at Menards and it came with a pamphlet including hard to understand instructions. How would you go about installing it over drywall? I have heard that I should nail durarock over the drywall (nail it good!). Is this right? Do you know of a website with this information or can anyone assist?