Exostkâ„¢ NW 40mil
EXOSTK-NW 40MIL Peel & Stick Underlayment is a premium-grade, self-adhering underlayment engineered to exceed rigorous industry standards. It features an SBS-modified bitumen compound laminated onto a non-woven polypropylene fabric making it an effective secondary barrier against water and moisture under asphalt shingles, metal roofing, slate, and tile.
- The robust polypropylene fabric offers exceptional anti-slip properties, improving walkability on sloped roofs.
- Acts as a leak barrier beneath asphalt shingles, metal, slate, and tile roofs.
- Self-adheres directly to common decking surfaces like plywood, OSB, and Gypsum sheathing without needing specialized tools.
- Florida Product Approval
- Foam Adhesive Compatibility
- Technical Information and Data Sheets

