Peel & Stick Laplock is a high temp. self adhered roofing underlayment for sloped roof applications. LapLock™ provides unmatched protection from storms, hail, ice-dams, wind-driven rain, snow and water. LapLock™ PSU (HT) has a mechanical slip resistant walking surface which provides superior steep slope walkability for roofers. In addition, LapLock's dual-locking lap seal technology creates an outstanding water-tight barrier that keeps your roof dry no matter what Mother Nature throws at it. Peel & Stick Laplock is designed for use under asphalt shingles, concrete tiles, all metal panels, shakes, synthetic shingles and primed cedar shakes. Peel & Stick Laplock not only protects roof decks, it protects Roofers as well.