itanium® PSU30 is the only modified rubberized asphalt Peel & Stick underlayment with a patented slip resistant Sure-Foot® nodular walking surface technology that allows for easier steep slope walkability, even in wet or dusty conditions. And it can be applied under most types of roofing shingles, including metal, tile, shake, slate, and both asphalt and synthetic shingles.
Titanium PSU30 Underlayment (3 foot x 72 foot roll)
C$185.39Price
C$0.86 per 1 Square foot

