Roofing Water Ice Barrier

Rolled roofing is usually installed below asphalt shingles in the valleys.

Roofing water ice barrier.

It is smart to install water and ice barrier. Valleys that carry a lot of water or that face north that hold ice can gain extra protection with water and ice barrier. Ice and water barrier is a self adhering rubberized membrane that protects your roof from leaking due to excessive water conditions. Grace ice and water shield fully adhered smooth surface roofing underlayment provides best in class roof leak protection against wind driven rain and ice dams.

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. 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. They are the low points that carry the most water. These conditions occur during wind driven rain and even more so during water backfrom ice dams our previous post discusses ice damming.

Valleys are the rivers of the roof structure. 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. Gcp applied technologies grace ice and water shield 36 in. 1 inch 25 4 mm 1 mile per hour 0 447 m s.

Roll self adhered roofing underlayment 225 sq. 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. 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.

There are several areas of your roof especially susceptible to the water penetration that ice and water barrier will serve to prevent.