Ice And Snow Roofing Barrier

Asphalt shingles metal roof shingles mineral surfaced roll roofing slate and slate type shingles wood shingles and wood shakes though not called out in r905 1 2 pv roof shingles and building integrated pv roof panels do require an ice barrier and that is noted under the subsections for those materials.

Ice and snow roofing barrier. Ice and water shield offers leak protection to trouble prone spots and can be used as an underlayment to help sloped roofs resist water penetration due to wind driven rain or water back up resulting from ice dams. 12 pitch roof with a 12 in. 8 pitch roof with a 12 in. Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage.

59 3 8 inches up the roof slope from the drip edge. 47 inches up the roof slope from the drip edge. Overhang and a 2 6 exterior wall. Overhang and a 2 6 exterior wall.

In areas where there has been a history of ice forming along the eaves causing a backup of water an ice barrier that consists of at least two layers of underlayment cemented together or of a self adhering polymer modified bitumen sheet shall be used in lieu of normal underlayment and extend from the lowest edges of the roof surfaces to the point at least 24 inches inside the exterior wall line of the building. A couple of examples of how far up the slope of the roof the ice barrier membrane must be installed. Find roof ice water barriers at lowe s today. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen.

The grace 36 in. Install the ice barrier membrane according to the manufacturer s instructions with the drip edge installed on top of the membrane. Overview weatherlock flex flexible self sealing ice water barrier provides excellent roof deck protection against water infiltration resulting from the freeze thaw cycle wind driven rains and normal water flow around eaves rakes valleys vents chimneys and skylights. 50 1 2 inches up the roof slope from the drip edge.

6 pitch roof with a 12 in.