MS 300 is an SBS modified, glass fiber reinforced, self-adhesive modified bituminous roofing underlayment for use under tile, slate, and asphalt shingles. Mineral granules on the upper surface provide enhanced skid resistant properties.
Skid resistant surface provides improved footing
Release film peels off for easy installation and handling
30 day exposure limit
Adheres directly to concrete, plywood, wood composition board and gypsum sheathing
Self-sealing around nails, preventing moisture penetration