There is no maximum slope installation.
Minimum roof pitch for smart vent.
Internal baffles drainage system and weather filter provide 3 levels of weather protection integrated end plug on both ends of vent provide a finished appearance and weather protection each vent has 9 sq.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
Built up roofs require a minimum roof pitch of 1 4 12 or greater.
Smartvent should be installed on shingled roofs with a minimum 4 12 pitch.
Use smartvent tapered end caps when terminating smartvent within the shingled area of the roof.
Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.
The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.
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.
Look at our fasciavent which has been designed more specifically for metal roofs and provides the intake ventilation for flat to 16 12 pitches.
Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.
Use of ridge or off ridge exhaust vents is required.
Wood shingles require a minimum roof pitch of 3 12 or greater.
Stop any roof deck 1 cuts about 12 from rake edges dormer walls or valley areas or at ends of the smartvent runs etc.
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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.
However you can only use this pitch with built up roofing or specialized synthetic roofing.
Of net free area per linear foot minimum 3 12 roof pitch with no maximum louver openings are sized to minimize insect infiltration and.
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.
Most houses with ridge vents do not have the proper soffit ventilation required because attic insulation blocks the soffit vents.
The code here is massachusetts allows shingles on roofs with pitches of 2 12 or steeper so i m good there.
Has anyone ever installed a ridge vent on a low slope 2 12 roof.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
