To create a bond along the underside of the seam where two G-Floor mats meet, the durable and specially-formulated G-Floor Waterproof Garage Seam Tape is an outstanding seaming option. The garage seam tape is a simple-to-use and waterproof seaming tape that's useful in garages, outdoor sheds, utility rooms, laundry rooms, trailers, modular units or any other place you want to extend the life of your flooring. Our unique seam tape is also made from strong fiberglass cloth with an acrylic adhesive that creates a like-permanent and durable bond between multiple mats.