Owens Corning WeatherLock 36-in x 66.7-ft 200-sq ft Polypropylene Roof Underlayment Product Discontinued Ideal for use in pools

Ideal for use in pools or spas

Afterwards

5 cu-in internal free volume

Just add water to mix and apply using a hopper (sold separately)

Owens Corning WeatherLock 36-in x 66.7-ft 200-sq ft Polypropylene Roof Underlayment Product Discontinued Ideal for use in poolsResists 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