Minimum Roof Pitch For Smart Vent

I will install grace over the entire dormer and shingle as usual.

Minimum roof pitch for smart vent.

Built up roofs require a minimum roof pitch of 1 4 12 or greater. However you can only use this pitch with built up roofing or specialized synthetic roofing. Use of ridge or off ridge exhaust vents is required. Use the enclosed fabric at the open ends of smartvent to seal for weather.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Stop any roof deck 1 cuts about 12 from rake edges dormer walls or valley areas or at ends of the smartvent runs etc. Click here for an expanding list of smartvent dealers. Asphalt shingles continue to be the most widely installed roof covering option in north america.

Of net free area per linear foot minimum 3 12 roof pitch with no maximum louver openings are sized to minimize insect infiltration and. Has anyone ever installed a ridge vent on a low slope 2 12 roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The code here is massachusetts allows shingles on roofs with pitches of 2 12 or steeper so i m good there.

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. Wood shakes require a minimum roof pitch of 3 12 or greater. 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. Smartvent should be installed on shingled roofs with a minimum 4 12 pitch.

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. 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. Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches.

I am planning on building a dormer that will come off the ridge with a 2 12 roof. There is no maximum slope installation. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. 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.