Ice And Water Shield Roof Valley

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.

Ice and water shield roof valley.

Roof slopes between 2 12 and 4 12 can use shingles but require roof application techniques to take into account a greater potential for ice dam water backup. A 4 12 roof slope means the roof rises 4 feet for every 12 feet of horizontal roof span. See the benefits of leak barriers. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.

All shingles removed from closed cut valley. 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. If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof. If the manufacturer requires the use of ice water i w in the valley because of the shingle type pitch of roof harsh climate area etc then i would use it.

Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. November 19 2014 10 37pm 5. 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. I have used it for years.

Ice barrier underlayment installed in roof valley. Entire width of new metal flashing properly extends over fascia at bottom of roof. Get automatic lifetime protection on your entire gaf roofing system when you install any gaf lifetime shingle and at least 3 qualifying gaf accessories you ll automatically get a lifetime limited warranty on your shingles and. 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.

Grace ice water shield roofing membrane is used as an underlayment for sloped roofs to resist water penetration due to water back up behind ice dams or wind driven rain. This grace ice and water shield self adhered roofing under layment covers 225 sq ft of roofing deck 36 in. Rise of the roof to the horizontal run and is expressed as a fraction. The following photos illustrate removal and replacement of a closed cut valley with new open metal valley shingles being removed in closed cut valley.

A shingled valley should last the life of your roof if done properly regardless if you have ice water shield under it or just 30 felt.