Once you have the seams looking just right you are now ready to affix the seam(s). The material of choice is a "tar paper" and it is something that you can find at your local roofing or home supply store. Having already double checked your seam to make sure it is just right…Roll back the seam edges to expose the needed area and unroll the tar material. Center it the length of the seam. Tear back the sticky-back and lay that turf down on the exposed material. Once you have gone the length of your seam, we recommend running a seam roller along it and pull up fibers that get matted down into the seam. Eventually you will want to walk over the seams several times to ensure the seams are set. (TIP: It is a good idea to lay something heavy on the seam, i.e. bagged sand, to "set" the seam into place. An hour or two should suffice in hot weather.)