Air Infiltration From Attic Through Ceiling

During the summer standard ceiling insulation reduces the transfer of heat from the attic to the living space.

Air infiltration from attic through ceiling.

It reduces energy consumption because the temperature in the attic is lower. Most of the time houses are insulated with materials that do not stop air leakage. If you have an attic ac unit you should take this opportunity to check the air seals on the duct work. The warm air rises toward the roof where it loses its heat.

This is building science 101. Additionally the air tightness of the attic construction itself the un intentional air infiltration i e. In a cold un insulated attic heat conducted through the ceiling warms the air near the attic floor. A form of un controlled attic ventilation will also have an influence on the moisture balance.

Spray foam also reduces infiltration through the ceiling. During the summer standard ceiling insulation reduces the transfer of heat from the attic to the living space. The two control layers we re concerned about here are. Convection is a natural process that can be controlled through the proper application of attic insulation.

Loose connections should be clamped taped and caulked. In the day temperatures can get up to 140f in the attic. In the day temperatures can get up to 140f in the attic. Spray foam also reduces infiltration through the ceiling.

Any ceiling vents need to be foamed and sealed where they meet the ceiling. Then there are the control layers meant to control the flow of heat air and moisture across the building envelope.