Ice On Roof Sheathing

In areas where the average daily temperature in january is 25 f 4 c or less solid sheathing is required on that portion of the roof requiring an ice barrier.

Ice on roof sheathing. There it soaks the insulation rendering it much less effective and can leak through the ceiling drywall below and into your living space. R905 8 2 deck slope wood shakes shall only be used on slopes of three units vertical in 12 units horizontal 25 percent slope or greater. After spending a lot of time on gba i believe the best approach is to put exterior foam on the roof sheathing as we are looking to replace the shingles this summer due to the damage that was caused to the shingles to remove the ice dams and the fact that the builder never applied any ice water guard. R905 8 2 deck slope wood shakes shall only be used on slopes of three units vertical in 12 units horizontal 25 percent slope or greater.

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. Installation manual zip system sheathing wall and roof zip system sheathing and tape fact sheet integrated sheathing or housewrap white paper zip system brand brochure house of brands brochure view all. Extend the membrane on the roof deck above the highest expected level of water back up from ice dams and above the highest expected level of snow and ice on the wall sheathing on vertical side walls dormers and vertical front walls for ice dam protection. In areas where the average daily temperature in january is 25 f 4 c or less solid sheathing is required on that portion of the roof requiring an ice barrier.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. The ice begins to back up under the roof shingles where it melts again soaking the roof sheathing and leaking into the attic. Scroll down 01. But ice dams can form in the gutter as well as on the roof.

Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. With the code recommended installation of the ice barrier over the drip edge water can back up at the eaves edge and get behind the vertical leg of the drip edge where it can end up flowing into the joint between the fascia and the roof sheathing.