
LapLock PSU (HT) 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.


LapLock PSU (HT) is designed for use under asphalt shingles, concrete tiles, all metal panels, shakes, synthetic shingles and primed cedar shakes. LapLock meets all the code requirements including ASTM D226, ASTM D4869 and AC 48.
Features and Benefits
- Premium protection from Ice Dams, Snow, Storms, Hail & Wind-Driven Water
- Mechanical slip resistant walking surface which provides superior steep slope walkability for roofers
- High temp. self adhered with split release liner
- LapLock dual-locking technology for water tight seals on laps