Owens Corning WeatherLock 36-in x 66.7-ft 200-sq ft Polypropylene Roof Underlayment Item #631343 Model #2731836 Rectangular design measures 34-in H

Rectangular design measures 34-in H x 25-in W

READY-TO-USE FORMULA: This pro grade formula leaves an attractive

It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor sold separately)

Homax pro grade

3-Year limited warranty

Owens Corning WeatherLock 36-in x 66.7-ft 200-sq ft Polypropylene Roof Underlayment Item #631343 Model #2731836 Rectangular design measures 34-in HResists cracking and breaking during installation due to excellent tear resistance Adheres to roof deck to prevent water migration, split backer sheet for easy application and positioning on the roof deck Slip resistant granulated surface allows for better traction Modified asphalt creates dependable, watertight construction that seals around nails and the taped selvedge edge improves the seal between courses