Try the carpet and rug institute. First link has the manuals you can purchase. Second link has a free download. I've hunted all over for comprehensive installation instructions and this is the best I can find. http://www.carpet-rug.com/drill_down_2.cfm?cftoken=73551442&cfid=557974&page=12&sub=3 http://www.carpet-rug.com/drill_down_2.cfm?cftoken=73551442&cfid=557974&page=12&sub=1