Buy Pipe Boots and ship them directly to your roof project address. Pipe Boots are also known as roof boots. Traditionally, the pipe boot was a lead product, but now top roofing companies are switching to Bullet Boots because they are lead-free and have a 35 year warranty. You might need to order different sizes within the same roof project. Bullet California Boots are 3″ taller and have a 2″ larger flange than the Bullet Boot. The Bullet California Boot is intended for roof projects where wider flanges are used.