Ice And Water Shield Whole Roof

Asphalt shingles are a little bit permeable in windy conditions but not very.

Ice and water shield whole roof. Covering the entire roof with ice water is no different for the wood breathing than covering the entire roof with metal roofing. 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. Now ice and water shield is designed to stop ice damming or water that backs up say from your gutters and getting into the roof surface. More and on the secondary and less on the surface material.

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. 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. More and more ice and water is really being used for a lack of correct installation. Neither one is going to pass water vapor.

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. You should seriously consider using ice water shield if you live in ice dam country. In addition ice and water shield does not breath and has been known to cause serious deck degradation. 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.

Many types of roofing including epdm and standing seam steel roofing are virtually impermeable to water vapor. 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. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. 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.

The zip system sheating that you see on a lot of new houses now has an impermeable layer applied to it so that water will not get thru. Other types of roofing including cedar shingles and concrete tile roofing are fairly permeable.