If you see ice and water shield being installed you might think it is felt paper.
Roofing felt vs ice and water shield.
What does felt paper do.
Ice and water shield is also installed under shingle roofing when the slope of the roof is 3 in 12 and less.
Roofing ice and water shield may look like traditional felt paper but it s vastly different in performance.
Felt is much safer.
An ice and water shield is a totally impermeable membrane that prevents leakage through the roof in the event of an ice dam.
The rubberized asphalt layer actually seals around roofing nails so they are totally water resistant.
They can be installed over low slope roofing and are installed in plies.
The balance of the roof area is covered with synthetic underlayment that will not wrinkle when exposed to the sun.
Grace ice and water shield fully adhered smooth surface roofing underlayment provides best in class roof leak protection against wind driven rain and ice dams.
Gcp invented fully adhered roofing underlayments more than 35 years ago.
They are also slip resistant which protects our team.
The underlayment creates a secondary water barrier on the roof so leaks and water damage due to rain and storms are eliminated.
Roofing ice and water shield may look like traditional felt paper but it s vastly different in performance.
If the roof slope is below 3 12 pitch see our previous post on how to determine a roof s pitch the entire roof should be covered but only if the roof is conventionally vented cold roof construction.
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.
It s an asphalt saturated paper that increases the water resistance of your roof from wind driven rains or blow offs.
Traditional felt paper does a decent job at stopping most leaks where water gets under shingles tiles metal or slate.
Felt paper or tar paper is also a rolled material you see roofers nailing down under shingles.
Ice and water shield is a far superior product compared to basic roofing felt paper.
The grace ice water shield 36 x 36 roll is another product that is recommend in areas that get more rain and snow.
Ice and water protector is part of a system working together to protect your roof including the shingles and other underlayments.
Such as 1 ply of peel an stick.
Once the high temperature ice and water shield has been laid down you can now add the second underlayment layer.
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.
Peel and stick flat roofing products are both smooth surfaced base sheets and colored granulated cap sheets.
