Ice Dam Shiekld On Roof

An ice dam forms when the roof over the attic gets warm enough to melt the underside of the layer of snow on the roof.

Ice dam shiekld on roof.

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. 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. Ice water shield is a thick sticky back underlayment also known as felt paper that will adhere to your roof deck and prevent water from seeping into your home if it gets under your shingles. But ice dams can form in the gutter as well as on the roof.

With the code recommended installation of the ice barrier over the drip edge water can back up at the eaves edge and get behind the vertical leg of the drip edge where it can end up flowing into the joint between the fascia and the roof sheathing. And so what happens is the water hits that ice dam and then backs up under the roof shingles and causes leaks. 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. Don t let your roofing budget go over board by hidden surprises understand what the 2020 average installed costs for ice dam shield is in your zip code by using our handy calculator.

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. As an experienced licensed roofing contractor i know first hand what it should cost for various levels from basic better and of course the best. The water trickles down between the layer of snow and the shingles until it reaches the eave of the roof which stays cold because it extends beyond the side of the house. This creates a sealed joint that prevent any water that got past the shingles from sitting on the edge of the wooden sheathing or dripping behind the wooden facia board.

The minimum is typically 2 feet 24 inches or 0 60 m above the vertical projection of the inside of the exterior wall. If an ice dam occurs on your roof and water backs up under the shingles it will seep down into your home through the nail holes holding the shingles on and into your attic. You should seriously consider using ice water shield if you live in ice dam country. Ice and water shield is a thin rubberized asphalt membrane that goes beneath the shingles of your roof typically only along the overhangs and in the valleys.

The ice and water shield must stick firmly over the top of the drip edge on the soffit edge of the roof.