Butyl Joist Tape for Flashing Deck Joists and Beams, UV Resistant, Level Deck...
Butyl Joist Tape for Flashing Deck Joists and Beams, UV Resistant, Level Decking, Protect Your Deck Structure, 1-5/8” x 50’ 2 Rolls Non-Skid. Diverts Water from Joists and Beams. Want to prevent deck rot?.