| ABOUT | CATEGORIES | Worlds of David Darling | CONTACT |
 |
air retarder / barrier
 |
A material or structural element that inhibits air flow into and out of a building's envelope or shell. This is a continuous sheet composed of polyethylene, polypropylene, or extruded polystyrene. The sheet is wrapped around the outside of a house during construction to reduce air infiltration and exfiltration, yet allow water to easily diffuse through it.
Related category
• INSULATION TOPICS
Also on this site:
Encyclopedia of Science
Transport Concepts & Designs (partner site)