Is Ice And Water Shield Required Under Metal Roofing

The eaves flashing shall be installed from the end of the deck to a minimum of 24 inches up the slope.

Is ice and water shield required under metal roofing.

Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates. 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. These categories are regular and what s known as high temp. Most manufacturers of fully adhered roofing underlayment or ice and water shield offer their product in two major categories.

So in our area of the country we typically only put this up to the first three feet. Hence it s name is ice and water shield. I recently had 2900 sf of standing seam metal roof standing seam metal roof and ice and water shield 1 2 2010 within the general discussion discussion of the residential metal roofing forum. It self seals around nails and provides protection for roof areas prone to ice and water intrusion.

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 product should be a premium high temperature ice and water shield for use with tile metal and other roofs with scrim reinforced top surface. 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. And also in southern climates it s put on the entire roof because even if the shingles blow off it keeps the water out.

If you have a roof that you know to be older than 1980 it won t have this great product under the shingles. 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. Gcp invented fully adhered roofing underlayments more than 35 years ago. 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.