Minimum Roof Pitch For Smart Vent

Smartvent allows cooler air to enter under the shingle through the 1 roof slit and out the ridge vent providing superior air flow and attic cooling.

Minimum roof pitch for smart vent.

Stop any roof deck 1 cuts about 12 from rake edges dormer walls or valley areas or at ends of the smartvent runs etc. Smartvent should be installed on shingled roofs with a minimum 4 12 pitch. I am planning on building a dormer that will come off the ridge with a 2 12 roof. Asphalt shingles continue to be the most widely installed roof covering option in north america.

Use the enclosed fabric at the open ends of smartvent to seal for weather. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Of net free area per linear foot minimum 3 12 roof pitch with no maximum louver openings are sized to minimize insect infiltration and. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.

Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Wood shakes require a minimum roof pitch of 3 12 or greater. If you have any questions or comments on installation please call 1 800 622 4455 and ask for a roof ventilation technician to assist you. I will install grace over the entire dormer and shingle as usual.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Most houses with ridge vents do not have the proper soffit ventilation required because attic insulation blocks the soffit vents. Wood shingles require a minimum roof pitch of 3 12 or greater. The code here is massachusetts allows shingles on roofs with pitches of 2 12 or steeper so i m good there.

Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches. Use of ridge or off ridge exhaust vents is required. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Smartvent can be modified to provide intake ventilation for new roofs or re roofs through the fascia board for low slope roof with less than a 4 12 pitch.

Has anyone ever installed a ridge vent on a low slope 2 12 roof. There is no maximum slope installation. However you can only use this pitch with built up roofing or specialized synthetic roofing. Use smartvent tapered end caps when terminating smartvent within the shingled area of the roof.