Roofing 1 Or 2 Rows Ice And Water

Ice water shield acts as an excellent back up protection in case any of these areas has a small leak.

Roofing 1 or 2 rows ice and water.

If you have a roof that you know to be older than 1980 it won t have this great product under the shingles. The ice and water shield is an amazing roofing product that was first introduced in the 1980s. Overhang and a 2 6 exterior wall. 50 1 2 inches up the roof slope from the drip edge.

Ice water shield should be installed anywhere there s a chance of water getting under the shingles. 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. This ice water shield is applied as an underlayment prior to putting the shingles on the roof. While this is an extremely rare necessity it is sometime called for.

An ice and water shield is a great roofing product to create leak free roofs. It must be installed the full length of all valleys. 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. Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.

If installed properly this reliable roofing underlayment can save homeowners 18 000 in reroofing costs. Some shingle manufacturers require ice and water shield on very. 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. On 4 12 or greater slopes the balance of the roof shall be one layer of 15 felt.

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. This ice shield seals nail holes better then regular tar paper roofing materials. 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.

47 inches up the roof slope from the drip edge. Peel back 300 600 mm 1 2 ft of release liner align membrane. 8 pitch roof with a 12 in. Here s how proper installation of grace ice water shield the conventional method.

Overhang and a 2 6 exterior wall. Along every wall chimney or skylight where flashing will be installed. Essentially if you have an overhang more than a foot deep you ll probably ended up putting on 6ft of ice and water. The minimum is typically 2 feet 24 inches or 0 60 m above the vertical projection of the inside of the exterior wall.

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. 6 pitch roof with a 12 in. Not all roofing underlayments are the same.