Install the ice barrier membrane according to the manufacturer s instructions with the drip edge installed on top of the membrane.
Roof ice and snow barrier.
Overhang and a 2 6 exterior wall.
Gcp applied technologies grace ice and water shield 36 in.
59 3 8 inches up the roof slope from the drip edge.
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.
Roofing materials that do require an ice barrier are.
12 pitch roof with a 12 in.
Roll self adhered roofing underlayment 225 sq.
6 pitch roof with a 12 in.
Then install regular roofing underlayment tar paper over the top of the drip edge and over the ice barrier and continuing all the way up the roof.
A couple of examples of how far up the slope of the roof the ice barrier membrane must be installed.
Ice and water shield is a great product that can be used in spots to protect the most vulnerable areas of your roof or as a whole roof underlayment to protect from ice dams water dams storms and leaking in any area of the country and any weather.
Overhang and a 2 6 exterior wall.
8 pitch roof with a 12 in.
By creating a barrier at the most vulnerable areas of your roof at the eaves and rakes in valleys around chimneys etc weatherwatch leak barrier will help prevent leaks due to water backing up in your gutters wind driven rain and in the north damaging ice dams.
47 inches up the roof slope from the drip edge.
Comes in black color family.
50 1 2 inches up the roof slope from the drip edge.
Find roof ice water barriers at lowe s today.
Ft 5003002 the home depot.
Protect your roof from harsh weather conditions by using this grace ice and water shield roll roofing underlayment.
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.
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.