I have an 11' x 17' single car garage. Can I lay down your product without adhesive? I have a similar product on it now, but it is only 7 feet and has laid in place for 10 years with no problem. Now I wish to replace with a wider mat. I plan to buy the commercial-grade.

You can, and we recommend installing our Diamond Nitro Rolls without adhesive. These rolls are heavy enough to lay flat and stay in place when driven over. They are also easily removed to clean, both under the mat and the surface of the mat. If for some reason you wanted to do a more permanent install, you can use our double-sided tape around the edges or a pressure sensitive adhesive around the edges.