CalFlor’s new BlueZone Perimeter Sealant Tape is here to remove the pain of messy, outdated methods for sealing the perimeter of a floor after installation. Simply unroll and place on the perimeter of any flooring installation for a quick and efficient seal providing long-lasting, reliable protection. BLUEZONE Perimeter Sealing Tape effectively seals the perimeter of a room, protecting the flooring's exposed edge and subfloor. Enough to seal a 12 x 12 room!