The Winchester, Virginia, manufacturer promises the plumbing boot won't crack or split because it's made from high-grade silicone, and the oval shape makes it adaptable to even steep roof pitches. The Ultimate Pipe Flashing is sized for PVC, ABS and some galvanized pipe in diameters from 1 1/4 inches to 4 inches. The manufacturer also offers an Easy Sleeve adapter for use with cast iron, copper and other pipe with irregular sizes and surfaces.
The boot can be installed on roof pitches of 18-in-12, and is unaffected by temperatures as low as 67 degrees below zero. It's available only in brown. Prices range from $50 to $54, depending on size.
The manufacturer guarantees the boot for the life of the roof when installed on a new roof. In the case of a retrofit, the flashing is guaranteed for the life of the existing roof, or for 50 years, whichever is longer.