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.
Roofing felt vs ice and water shield.
It s an asphalt saturated paper that increases the water resistance of your roof from wind driven rains or blow offs.
Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates.
If you see ice and water shield being installed you might think it is felt paper.
Depending on the slope of the roof this product could be installed to cover the bottom 6 feet of the roof or with a very low slope cover the entire roof.
Ice and water protector membrane is a superior choice over roof felt for leak protection when properly installed and paired with the right products.
What does felt paper do.
Many local building codes require ice and water shield and national building code states ice and water shield must start at the roofs eave edge and extend 2 ft inside heated wall space of a structure.
An ice and water shield is a totally impermeable membrane that prevents leakage through the roof in the event of an ice dam.
Roofing ice and water shield may look like traditional felt paper but it s vastly different in performance.
Does the drip edge metal go under the tarpaper ice and water shield or underlayment on the eave.
Ice and water protector is part of a system working together to protect your roof including the shingles and other underlayments.
Felt is much safer.
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.
Get the real story about drip edge placement.
Ice and water shield is a far superior product compared to basic roofing felt paper.
Felt paper or tar paper is also a rolled material you see roofers nailing down under shingles.
Traditional felt paper does a decent job at stopping most leaks where water gets under shingles tiles metal or slate.
Traditional felt paper does a very good job at stopping most leaks where water gets.
From hud path best practices guide.
It can be very dangerous when the new roofer is tearing off the old shingles and looses his or her footing on the ice and water barrier.
Underlayment typical 15 tarred felt underlayment provides back up protection against water intrusion only as long as the primary roofing material remains intact.
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Roofing ice and water shield may look like traditional felt paper but it s vastly different in performance.
