Bakor Eaveguard is a self adhering, asphalt waterproofing underlayment. It is composed of a high tack rubberized asphalt, coated on a non-woven glass fibre mat. Sand on the upper surface provides a non-slip working substrate. The lower surface has a split back release film for ease of application. Eaveguard is installed under shingles over plywood, OSB, and dimensional lumber decks. It is used at eaves, valleys, flashings and on low-slope applications to provide watertight protection against the back-up of water resulting from ice dams or wind driven rain. Coverage: 195 sq ft per roll.