Products / Henry WIP 100 Granular-Surface Self-Adhering Roofing Underlayment

55-mil self-adhering rubberized asphalt underlayment reinforced with fiberglass and surfaced with granules, used under shingles at eaves, ridges, valleys, dormers and skylights or over the full deck. It seals around nails, staples and screws and has a split-release film. Henry lists Florida Product Approval 16724 and Miami-Dade NOA 25-0606.03. A summer-grade version, WIP 100SG, is formulated to keep its consistency at high ambient temperature.