Ice Barrier Roofing Code

Eaves flashing is required to prevent ice formation at the eaves and gutter to back up beneath the roof covering.

Ice barrier roofing code.

With the code recommended installation of the ice barrier over the drip edge water can back up at the. 905 1 2 ice barriers in areas where there has been a history of ice forming along the eaves causing a backup of water as designated in table 301 2 1 an ice barrier shall be installed for asphalt shingles metal roof shingles mineral surfaced roll roofing slate and slate type shingles wood shingles and wood shakes. Ice water barrier codes the roofing codes that mandate how much water ice barrier should be used on roofing projects will be different from region to region. The roofing codes in minnesota for example require that two layers of an ice water shield be adhered to the roof before the felt or finished roofing product can be added.

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. Because the ice barrier membrane in this situation is taking the place of the underlayment along the eaves edge it should be installed over the drip edge according to the code. 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.

The minimum net free ventilating. The eaves flashing shall be installed from the end of the deck to a minimum of 24 inches up the slope. Jump to full code chapter 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 shall be installed for asphalt shingles metal roof shingles mineral surfaced roll roofing slate and slate type shingles wood shingles and wood shakes. Building codes questions ray boosinger phone.

In addition an ice barrier that consists of at least two layers of underlayment cemented together or of a self adhering polymer modified minimum vent area. 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 place 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. Building codes regulations 401 south spring street 3rd floor stratton building springfield il 62706. Building codes reporting phone.

But ice dams can form in the gutter as well as on the roof.