We want to be sure that the product you purchased is, in fact, the product being installed. All Stonhard materials are factory formulated, pre-weighed and packaged utilizing the latest process technology. Also, let the company you're dealing with know that you wish to review coverage information, amounts used, etc. If you buy a 1/4" floor, make sure you get a 1/4" floor! If you still aren't 100% satisfied that you got what you paid for, ask to have a core sample taken so you can see the finished thickness.