If these were a darker color, a shag, or a level loop with much more pile, I probably wouldn't see a single seam. I used a level loop, light colored, cushion backed tile. (This could just be an impression I have and not reality.) Carpet Seaming Tape Roll: Seam Guard 1-7/8 in. I wonder if the tape is "pulling" the tiles back to where they were originally set. Double-Sided Carpet Tape Roll: Indoor Pressure Sensitive 15 ft.
Equipped with our powerful permanent adhesive, this double sided tape defies gravity, holding an item up to 20 pounds. For your toughest jobs, go for our strongest hold-Scotch Extremely Strong Mounting Tape. Use instead of nails or screw for mounting up to 30 lbs. So, you have to do a little finagling to get them to where you want them. Double-sided carpet tape holds the bottom side of carpet or carpet tiles onto the floor. Use on finished/painted surfaces, metal, tile, plastic and more. It's impossible to lay the tiles down without them getting a little stuck. I don't know if I initially set it down wrong or if they moved a bit after the install. There seems to be a few pieces that might not have stayed exactly where they were supposed to. Double Sided Acrylic Adhesive Strip is a non-toxic, heavy-duty adhesive on a convenient, easy-to-use roll. I'm not confident that I did the best job, though. Roberts HOMEeasy Indoor or Outdoor 164 ft. It's very time consuming! But, with the shape of our game room, which leads down halls and stuff, it just didn't seem possible to lay the tape down the way it was recommended at icarpetiles. My method was to install approximately 5 pieces of tape for each square, kind of drawing off of the flor method with dots. We purchased the Duck brand 2-sided carpet tape rolls from Home Depot.
I just finished installing about 1000 sq feet as a DIY'er.