Insulation for Crawl Space Applications
Airflow through cracks and holes in the walls, ceiling, and floor is referred to as air infiltration. Air infiltration is minimized by spray foam, but also by caulking and sealing the building envelope.
A home that is not sealed for air infiltration will be uncomfortable due to drafts and will use about 30% more energy than a well-sealed home. Controlling air infiltration is one of the most cost-effective energy-efficiency measures in modern construction practices.