Products / Henry 606 80# Premium SBS Modified Mineral-Surfaced Underlayment

Mineral-surfaced cap sheet for built-up roofing systems, formulated for cold-weather application. It is made on a fiberglass mat coated with a lightly modified rubberized asphalt containing fire retardant fillers and surfaced with color-coated mineral/ceramic granules. Henry describes it as fire-rated without naming a test standard on the product page.