Here's how they join up the seams between the pieces of fake grass. The roll of stuff you see which we've been told is definitely not tape but "seaming cloth" with very expensive glue is what's used to hold the seams together. They cut, trim, then use this cloth, then special staples to close up their seams. So in the photos you see the seaming cloth, then part of it being pulled back just like double stick tape but it's not tape it's seaming cloth. Then the installers joined the two pieces together.
