Ice and water shield roofing paper 15.
Ice dam roofing paper.
If you are not using the elastomeric membrane i would put roofing paper over the entire 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.
The melted water flows under the snow and freezes as it reaches the unheated soffit area at the eaves thus creating an ice dam.
Ice dams are a serious issue for homeowners and roofing professionals in cold climates or even where occasional snow may fall.
What does felt paper do.
In the video it s been installed on the entire roof.
Ft to the compare list.
Ice dams are formed by the continuous melting and freezing of snow due to heat escaping from the house or from a backup of frozen slush from the rain gutters.
It does this by using gravity.
Ice and water shield is a far superior product compared to basic roofing felt paper.
Many shingle guarantees require roofing felt because it makes the shingles last longer.
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 video shows you exactly what ice water shield looks like and where it s installed.
Both products have a separate purpose.
Paper mat 5 polymer modified asphalt 2.
Click to add item 15 asphalt felt 3 x 144 roofing underlayment 432 sq.
Weatherwatch protects against ice dams is required at eaves by many building codes wherever the january average temperature is 25 f or lower or where there is a possibility of ice forming in the eaves check local building codes for specifications in your area.
It must be installed the full length of all valleys.
Traditional felt paper does a decent job at stopping most leaks where water gets under shingles tiles metal or slate.
Fourth you need to put a drip edge on the remaining sloped sides of the roof over the building paper and over the ice and water shield.
Gcp invented fully adhered roofing underlayments more than 35 years ago.
Tar paper roofing felt thermoplastic polyolefin etc or cheaper.
Click to add item leakbarrier ps200 high temperature 36 x 66 8 ice water barrier 200 sq.
This barrier shall consist of at least two layers of underlayment cemented together or be a self adhering polymer modified bitumen sheet many times referred to as ice dam protection or ice and water shield.
Grace ice water shield 36 in x 75 ft 200 sq ft rubber roof underlayment.
Item 169827 model 5003002.
Gravity allows the water to flow over the tar paper down to the edge of the roof.
