Titanium 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. It also features a crinkled silicon treated poly split release liner making removal quicker and easier than single sheet competitors. Unlike other brands with multiple roll offerings for different roof types, a single PSU30 product can be used under all types of primary roofing materials including; metal, tile, shake, slate, and both asphalt and synthetic shingles. Used in conjunction with Titanium UDL30 synthetic roofing underlayment, these 2 products (UDL30 & PSU30) offer the sloped roofing category a unique combination of safety, security and simplicity. It's tough, durable, coated woven synthetic facer and rubberized asphalt formulation is engineered to lay flat and not buckle or wrinkle when exposed to temperature and moisture fluctuations on the roof. PSU30 is also a granular free surface. Granular surfaced membranes also deliver inferior seam overlap strengths and integrity; a critical issue for ice damming and wind driven rain protection. For increased protection PSU30 provides a self sealing lap seal system which forms an impervious asphalt to asphalt bond at overlapping seams, delivering superior waterproofing protection.