Cobra Attic Ventilation

Calculate of linear feet of cobra exhaust vent.

Cobra attic ventilation.

Insulation at least r 38 or more is there for heating and. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. It can do both. When installed as part of a properly balanced attic ventilation system gaf cobra rigid vent 3 is a rigid style shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic while resisting wind driven rain infiltration.

The original cobra ridge vent protecting millions of homes comes on a mesh roll for fast and easy installation with no complicated fitting wrapping nail gun adapters connectors or end plugs needed. Step 4 cap shingle installation install the cap shingles directly to the vent using included 3 ring shank nails provided only with cobra snow country advanced ª and cobra rigid vent 3 ª for cobra snow country ª and c obra rigid vent 2 ª nails must be of sufficient length to penetrate through plywood decks or at least 3 4 into wood planks a nail line is inscribed on the top. It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters. Divide the square inches of nfa needed at the ridge by the nfa of the cobra exhaust vent cobra exhaust vent has 16 9 sq.

Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. When installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic. Available in both hand nail and nail gun versions its shingle over design helps it blend into the ridge line. This attic requires 17 linear feet of cobra exhaust vent to meet fha minimum requirement.

Inches of nfa per linear foot 288 sq. See the benefits of attic ventilation a new roof is more than just shingles. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. 16 9 17 linear feet.

Best ventilation is open soffit venting to a open vented ridge vent.