Roofing Water Ice Barrier

Roll self adhered roofing underlayment 225 sq.

Roofing water ice barrier.

Even if you don t live in an ice dam region like minnesota colorado and wisconsin you may still consider ice barrier membrane for your home. Ice and water barrier is a self adhering rubberized membrane that protects your roof from leaking due to excessive water conditions. Valleys that carry a lot of water or that face north that hold ice can gain extra protection with water and ice barrier. 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.

Rolled roofing is usually installed below asphalt shingles in the valleys. It is smart to install water and ice barrier. They are the low points that carry the most water. 905 1 2 ice barriers in areas where there has been a history of ice forming along the eaves causing a backup of water as designated in table 301 2 1 an ice barrier shall be installed for asphalt shingles metal roof shingles mineral surfaced roll roofing slate and slate type shingles wood shingles and wood shakes.

Ice barrier roof material is used to protect vulnerable areas of the roof as an added layer of protection against ice and water damage. Valleys are the rivers of the roof structure. These conditions occur during wind driven rain and even more so during water backfrom ice dams our previous post discusses ice damming. Gcp applied technologies grace ice and water shield 36 in.

1 inch 25 4 mm 1 mile per hour 0 447 m s. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. 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. Find roof ice water barriers at lowe s today.

Grace ice and water shield roofing underlayment a registered trademark of gcp applied technologies is the name that contractors trust the most to protect their reputations.