How wide is the 50 ft. Butyl Sealant Tape Roof Accessory?

The Butyl sealant is 1/2 inch wide

The Butyl sealant is 1/2" wide and is recommended for use on all metal-to-metal connections. Conveniently sold in a 50 ft. roll that can easily be cut to length. The sealant adheres to most clean and dry surfaces and does not harden or crack over time providing an effective moisture barrier. Recommended for roof slope of 3/12 pitch or greater.