Range Hood That Goes Through Roof

For the range hood duct vent is it more effective to go straight up to the roof or go up then bend 90 degree to vent out of the exterior wall.

Range hood that goes through roof.

Range hoods are typically vented using a special duct work that runs through a roof and less often through an exterior wall of your house. Measure your range and select a hood that meets or exceeds the width of your current range. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Exhaust hoods over ranges once considered an accessory have become standard equipment in modern kitchens.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. You can buy the proper flashing to install it on a flat roof and a roof cap that has screen around it to prevent insects from entering. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Range is against an exterior wall where the rafters rest on.

The duct work is usually concealed within the walls and it is really important to make everything air and water tight. Be sure to extend the pipe up at least 2 to 3 above the roof to prevent snow buildup from causing problems. Also consider style lighting fan speed and the air movement. Do vertical ducts for range hoods have to go through the roof.

We have 1 floor ranch.