Roof Ice And Water Shield Code
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Roof assemblies and rooftop structures 780 cmr 1501 0 general 1501 1 scope.
Roof ice and water shield 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. 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. Rise of the roof to the horizontal run and is expressed as a fraction. 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.
On roofs with slope equal to or greater than eight units vertical in 12 units horizontal 67 percent slope the ice barrier shall also be applied not less than 36 inches 914 mm measured along the roof slope from the eave edge of the building. Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates. Code 675 iac 14 4 4. The eaves flashing shall be installed from the end of the deck to a minimum of 24 inches up the slope.
The 2020 indiana residential code adopts and amends the first printing of the 2018 international residential code. Sps 321 28 4 b b the ice dam protection shall extend at least 30 inches up the roof slope from the roof edge and at least 12 inches up the roof slope beyond the inner face of the exterior wall. Sps 321 28 5 5 other roof coverings. Eaves flashing is required to prevent ice formation at the eaves and gutter to back up beneath the roof covering.
Roof slopes between 2 12 and 4 12 can use shingles but require roof application techniques to take into account a greater potential for ice dam water backup. Note that r903 r904 and r905 1 and their respective subsections apply to all roofing types unless indicated otherwise. 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. The massachusetts state building code 364 780 cmr seventh edition 8 22 08 effective 9 1 08.
The 2020 indiana residential code regulates ice water shield and drip edge as follows. Ice and water shield. 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. A roofing membrane that is field applied using one layer of.
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. A 4 12 roof slope means the roof rises 4 feet for every 12 feet of horizontal roof span.