Roof Ventilation Channels

Roofs often require ventilation channels directly under the roof sheathing either for a short section of the roof for example near the eaves or for the entire roof from soffit to ridge.

Roof ventilation channels.

The provent attic ventilation channel provides an unobstructed air channel through your insulation. Improper attic ventilation prevents the free flow of air from the soffit to the exhaust vents which reduces insulation efficiencies and accelerates moisture problems. The integrated baffle means that no blocking material is needed between the vent and the top plate. Improper attic ventilation prevents the free flow of air from the soffit to the exhaust vents which reduces insulation efficiencies and accelerates moisture problems.

The 23 1 2 in x 46 in ventilation system features polystyrene construction which is lightweight and moisture resistant. This prevents the warm air from building up and allows the snow and ice to melt evenly on the roof. Provent may be installed prior to the soffit panel without fear of blow out. The flanges are about 1 1 4 in.

The luan plywood stapled to the underside of the tji top flange leaves a clear 1 1 4 in. When the wind is blowing these ventilation channels allow air to move from the soffit vents to the ridge vents. In a well ventilated attic cool air enters through the intake vents and carries warm moist air to the exhaust vents above. Wide air channel for ventilation air.

All the ventilation openings need to be protected to prevent rain or snow infiltration. The provent rafter vent channel provides an unobstructed air channel through your insulation. Deep so we just need panels that span between the webs.