Ice And Water Shield Code
In most areas you install ice and water shield 18 to 24 inches past the interior wall line.
Ice and water shield code. Even if someone can confirm what it says in the code i will go buy a copy. The 2020 indiana residential code adopts and amends the first printing of the 2018 international residential code. Ice water shield is a thick sticky back underlayment also known as felt paper that will adhere to your roof deck and prevent water from seeping into your home if it gets under your shingles. A good rule of thumb is 1 overhang 3 ice shield.
Received 0 votes on 0 posts call your local building inspector and they will tell you the code for your area. Or scan and send a hard copy. Ice and water protector sometimes also referred to as ice and water shield is a waterproof roof underlayment membrane developed to protect vulnerable areas on a roof from ice and water damage. 2 over hang 6 ice shield.
In the video it s been installed on the entire roof. There are more considerations such as pitch and other factors but over all that s a good rule of thumb for a quality roof. The video shows you exactly what ice water shield looks like and where it s installed. In retrospect yes i should have looked into this further with the builder and put drip edges with ice and water shield.
Eaves flashing is required to prevent ice formation at the eaves and gutter to back up beneath the roof covering. Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates. If an ice dam occurs on your roof and water backs up under the shingles it will seep down into your home through the nail holes holding the shingles on and into your attic. Tar paper roofing felt thermoplastic polyolefin etc or cheaper.
Massachusetts building codes require roofers to install ice water shield beginning at the edge of the overhang eave and extending at least 2 feet past the inside of the interior wall. Anything less than 3 12 shouldn t be shingles imo but if it is we ice shield the whole thing first. The guy also talks about how the ice water shield seals itself around roofing nails which helps to distinguish it from a traditional underlayment product e g. Code 675 iac 14 4 4.
Note that r903 r904 and r905 1 and their respective subsections apply to all roofing types unless indicated otherwise. Was hoping someone had an electronic version of the building code and could send me the relevant sections. The minimum we install is 6 feet up from the eaves and sometimes further depending on the overhang. 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 regulates ice water shield and drip edge as follows. Ice and water protectors sometimes called ice and snow shields in cold climates are made with polymer modified bitumen. Ice and water shield.