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