Roofing 1 Or 2 Rows Ice And Water

In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in table r301 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 the ice barrier shall consist of not fewer than two layers of underlayment cemented together or.

Roofing 1 or 2 rows ice and water.

Ice water shield should be installed anywhere there s a chance of water getting under the shingles. 50 1 2 inches up the roof slope from the drip edge. Some shingle manufacturers require ice and water shield on very. On 4 12 or greater slopes the balance of the roof shall be one layer of 15 felt.

47 inches up the roof slope from the drip edge. An ice and water shield is a great roofing product to create leak free roofs. Overhang and a 2 6 exterior wall. All overhangs should also be covered.

It must be installed the full length of all valleys. While this is an extremely rare necessity it is sometime called for. But with a well insulated and well air sealed attic with good soffit to ridge ventilation and no valleys or dormers to collect snow and block ventilation ice dams should not be a problem. Along every wall chimney or skylight where flashing will be installed.

If installed properly this reliable roofing underlayment can save homeowners 18 000 in reroofing costs. 8 pitch roof with a 12 in. Essentially if you have an overhang more than a foot deep you ll probably ended up putting on 6ft of ice and water. The ice and water shield is an amazing roofing product that was first introduced in the 1980s.

These spots are on the eaves of your home up to 24 inside the exterior wall this usually means at least 2 rows or 6 feet in every valley 1 row or 3 feet around every pipe before the flashing is installed. In colder regions a good practice is to cover the first 3 feet 36 inches or 0 91 m of roof over heated space with ice and water protector. Not all roofing underlayments are the same. Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.

Some codes require a membrane at the eaves extending 2 inside the exterior wall line as an ice dam precaution. Ice and water the entire roof deck. This ice shield seals nail holes better then regular tar paper roofing materials. Peel back 300 600 mm 1 2 ft of release liner align membrane.

A couple of examples of how far up the slope of the roof the ice barrier membrane must be installed. 6 pitch roof with a 12 in. This ice water shield is applied as an underlayment prior to putting the shingles on the roof. Ice water shield acts as an excellent back up protection in case any of these areas has a small leak.

Overhang and a 2 6 exterior wall. All commercially available ice and water shield comes in three foot rolls so if you have a 2ft overhang 1 roll will only get you about a foot inside the heated wall space hence another roll will be required. Here s how proper installation of grace ice water shield the conventional method.