Guide to Closing and Conditioning Ventilated Crawlspaces

This how-to guide explains the issues and concerns with conventional ventilated crawlspaces and provides prescriptive measures for improvements that will create healthier and more durable spaces. The methods described in this guide are not the only acceptable ways to treat a crawlspace but represent a proven strategy that works in many areas of the United States. The designs discussed in thisguide may or may not meet the local building codes and as such will need to be researched before beginning the project.