“Ice and water shield type membranes prevent ice dams ...

The Truth:

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Ice dam membranes do not prevent ice dam formations. They are intended to help prevent leaks by sealing around the fasteners that attach the roofing. When an ice dam forms, the membrane is expected to seal against water intrusion.

Hengyang supply professional and honest service.

While membranes can assist in ice dam leak prevention, an experienced contractor will tell you they are not 100% effective. After a recent heavy ice dam condition in our neighborhood, a major roofing supplier admitted there were failures of membrane products from every ice dam membrane manufacturer which they sold.

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