Roof Insulation Air Flow

Plastic cardboard and styrofoam baffles are available at home stores which can be installed between the roof sheathing and insulation to allow unobstructed air flow from the eaves to the unheated space.

Roof insulation air flow.

To counter these problems baffles are installed to keep a small space between the insulation and the roof deck. These openings are often a space hidden from view where a wall and the roof deck interface. As the air in the baffles heats up it can flow to the peak and out the roof vent. Without high levels of attic or roof assembly insulation warm air will flow through the ceiling and roof to the outdoors in the winter.

It is important to block these spaces. Concrete block with mortar joints can support diffuse air flow two ways. Similarly in hot weather conditions warm air will infiltrate into the living are attic temperatures may reach 140ºf 60ºc and more. Traditionally insulation materials that are placed inside of an attic will require air circulation within the attic space to assist in drying excess moisture in this indoor space.

Insulation is used in an attic for cross ventilation to minimize potential for moisture accumulation and condensation to help energy savings and moisture control. Through the block and through cracks that form in the mortar joints. Air should be tunneled from the eaves behind the insulation that is installed between the roof rafters and allowed to exit at the peak or at gable vents. The soffit vents allow convective air movement from the soffits of the residence to the ridge vent.