Not all roofing underlayments are the same.
Water amd ice roof.
Tar paper roofing felt thermoplastic polyolefin etc or cheaper.
By creating a barrier at the most vulnerable areas of your roof at the eaves and rakes in valleys around chimneys etc weatherwatch leak barrier will help prevent leaks due to water backing up in your gutters wind driven rain and in the north damaging ice dams.
The video shows you exactly what ice water shield looks like and where it s installed.
Grace ice water shield 36 in x 75 ft 200 sq ft rubber roof underlayment.
Item 169827 model 5003002.
This ice shield seals nail holes better then regular tar paper roofing materials.
In the video it s been installed on the entire roof.
Ice dams are a serious issue for homeowners and roofing professionals in cold climates or even where occasional snow may fall.
Grace ice water shield roofing membrane is used as an underlayment for sloped roofs to resist water penetration due to water back up behind ice dams or wind driven rain.
If you have a roof that you know to be older than 1980 it won t have this great product under the shingles.
There are several areas of your roof especially susceptible to the water penetration that ice and water barrier will serve.
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 the melted water flows under the snow and freezes as it reaches the unheated soffit area at the eaves thus.
Ice and water barrier is a self adhering rubberized membrane that protects your roof from leaking due to excessive water conditions.
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 ice and water shield is an amazing roofing product that was first introduced in the 1980s.
Grace ice water shield underlayment also offers leak protection in trouble prone spots like valleys skylights protrusions and other flashing areas.
This ice water shield is applied as an underlayment prior to putting the shingles on the roof.
Gcp invented fully adhered roofing underlayments more than 35 years ago.
These conditions occur during wind driven rain and even more so during water back from ice dams our previous post discusses ice damming.