Hi All I'm in need of some butyl to install on the bottom of some feet for a metal roof. I've found the following at Grainger http://www.grainger.com/Grainger/items/6JD51?cm_mmc=Google%20Base-_-Adhesives,%20Sealants%20and%20Tape-_-Tapes-_-6JD51 Anybody have something they like better? thanks, jay peltz power