Air sealing is the process of closing gaps, cracks, and leaks in a building's envelope to prevent the uncontrolled movement of air between the interior and exterior. It is an important step in improving energy efficiency, indoor comfort, and reducing utility costs.
The process of air sealing typically involves the following steps:
Inspection: A thorough inspection is conducted to identify areas of air leakage, such as around windows, doors, electrical outlets, vents, and pipes.
Caulking and Weatherstripping: Gaps and cracks in building materials are sealed using caulk, while weatherstripping is applied to create a tight seal around movable components like doors and windows.
Air Barrier Installation: Additional measures, such as installing vapor barriers, air barriers, or membranes, may be taken to create a continuous barrier against air leakage.
Duct Sealing: Ductwork is inspected for leaks and sealed using appropriate materials to prevent conditioned air from escaping or unconditioned air from entering.
Testing and Verification: After air sealing, a blower door test may be performed to measure the effectiveness of the sealing and identify any remaining leaks.
Air sealing helps to enhance indoor comfort, reduce energy waste, and improve the overall performance of the building's heating and cooling systems. Consulting with professionals in the field, such as energy auditors or insulation contractors, can ensure effective air sealing practices are implemented for maximum benefit.