Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen.
How to install ice and water shield on roof.
The video shows you exactly what ice water shield looks like and where it s installed.
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.
Tar paper roofing felt thermoplastic polyolefin etc or cheaper.
In the video it s been installed on the entire roof.
Ice and water shield is perfect to use around skylights chimneys plumbing vents ventilation caps or anything that penetrates up through a roof.
The guy also talks about how the ice water shield seals itself around roofing nails which helps to distinguish it from a traditional underlayment product e g.
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.