Ice And Water Shield Entire Roof

I just recently asked grace about this.

Ice and water shield entire roof.

Old brick firehouse currently used for dead storage by the town i think one small room is heated but not the whole building. Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage. A roofing material can be vapor permeable or the roofing assembly can be vapor open such as any type of shingled roofing which leaves gaps between layers. And they were talking about putting on i guess ice and water shield.

The situation was a slate roof on a 120 yr. Ice and water shield is a great product that can be used in spots to protect the most vulnerable areas of your roof or as a whole roof underlayment to protect from ice dams water dams storms and leaking in any area of the country and any weather. Underlayment typical 15 tarred felt underlayment provides back up protection against water intrusion only as long as the primary roofing material. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen.

The video shows you exactly what ice water shield looks like and where it s installed. Both products have a separate purpose. From hud path best practices guide. 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.

Do you need to put it on the entire roof or and also do you need felt as well in addition to the ice and water shield. In the video it s been installed on the entire roof. And the question was to what extent do you need ice and water shield on the roof. Tar paper roofing felt thermoplastic polyolefin etc or cheaper.