Ice And Water Shield Roof Valley

Roof mastic applied along sides of valley flashing.

Ice and water shield roof valley. Entire width of new metal flashing properly extends over fascia at bottom of roof. This high performance solution provides superior performance at an excellent value. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. 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.

Ice barrier underlayment installed in roof valley. What do ice and water shields do. 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 with your valley metal. Class a roof assemblies also include ferrous or copper shingles or sheets metal sheets and shingles clay or concrete roof tile or slate installed on noncombustible decks.

Class a roof assemblies include those with coverings of brick masonry and exposed concrete roof deck. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. If you have a more complicated roof with valleys skylights dormers vent pipes or chimneys it s a good idea to have ice and water shield installed in and around these areas as well as along the eves. 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.

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. Closed cut valley fully replaced with new metal valley flashing. Grace ice water shield has protected the roofs of over 2 million homes and been installed on marquee projects in 25 countries since its introduction in 1978. 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.

Of course if the above is not the case then you have more freedom to choose what you want o apply in the valley.