Ice And Water Shield Roofing Code

Ice and water shield roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates.

Ice and water shield roofing code. 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. In michigan it is code for the ice water shield to go 2 beyond the interior wall line on heated portions of the dwelling. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in table r301 2 1 an ice barrier that consists of at least two layers of underlayment cemented together or a self adhering polymer modified bitumen sheet shall be used in lieu of normal underlayment and extend from the lowest edges of all roof surfaces to a point at least 24 inches 610 mm inside the exterior wall line of the building. Eaves flashing is required to prevent ice formation at the eaves and gutter to back up beneath the roof covering.

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in table r301 2 1 an ice barrier that consists of a least two layers of underlayment cemented together or of a self adhering polymer modified bitumen sheet shall be used in lieu of normal underlayment and extend from the lowest edges of all roof surfaces to a point at least 24.