Is Ice And Water Shield Required Under Metal Roofing

If you have a roof that you know to be older than 1980 it won t have this great product under the shingles.

Is ice and water shield required under metal roofing.

And so what happens is the water hits that ice dam and then backs up under the roof shingles and causes leaks. Many local building codes require ice and water shield and national building code states ice and water shield must start at the roofs eave edge and extend 2 ft inside heated wall space of a structure. These categories are regular and what s known as high temp. Hence it s name is ice and water shield.

Code interpretation this code implies that ice and water shield eaves flashing is required for installation on all heated steep slope structures exception is unheated structures in colder climates. The short answer is probably not. Most manufacturers of fully adhered roofing underlayment or ice and water shield offer their product in two major categories. Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates.

And also in southern climates it s put on the entire roof because even if the shingles blow off it keeps the water out. The product should be a premium high temperature ice and water shield for use with tile metal and other roofs with scrim reinforced top surface. It self seals around nails and provides protection for roof areas prone to ice and water intrusion. If you have a metal roof you generally don t have that problem because even if you do get ice it s going to build up at the edge.

The eaves flashing shall be installed from the end of the deck to a minimum of 24 inches up the slope. Protects under all standard sloped roof coverings grace ice water shield roofing underlayment protects under slate tile cedar shakes or metal as well as under conventional asphalt shingles. Not all roofing underlayments are the same the ice and water shield is an amazing roofing product that was first introduced in the 1980s. Gcp invented fully adhered roofing underlayments more than 35 years ago.