Vaulted Ceiling Insulation Air Gap

To keep fiberglass batts from blocking airflow rafter baffles should be.

Vaulted ceiling insulation air gap.

The component that creates the gap is called a variety of things including a ventilation baffle a ventilation chute a ventilation channel or a product such as proper vent. It provides an open airy look and feel to the room and they are often in demand among home buyers. Ventilation channels maintain an air gap between the insulation and the roof sheathing. The craze for insulated cathedral ceilings and great rooms really took off in the 1970s and 1980s when examples began popping up like mushrooms after a warm rain.

In a vaulted ceiling however the only fresh air route lies between the insulation and the underside of the roof deck. This type of roof assembly is designed so the air can flow up the soffit vent through an insulation baffle pass through the 1 5 gap between the insulation and roof sheathing then exit through a ridge vent. Cathedral ceilings are a feature in many homes that add to value to the house because the high ceiling tends to make rooms look larger. Air sealing and insulating.

A cathedral ceiling is a sloping and pointed ceiling which is usually high and open. In those days most builders stuffed cathedral ceiling rafter bays with fiberglass batts. Cathedral ceilings built using 2 x 12 roof rafters allow enough space for the fiberglass batt insulation and a 1 5 gap for ventilation.