Gutters help disperse water away from the foundation of your home.  When properly installed and maintained, gutter systems prolong the foundation life of your home, as well as assists in directing water away from crawlspaces.  When we direct water away from crawlspaces we are lowering the overall moisture content in the wood flooring support members.  High moisture content in the crawlspace leads to mold, foundation shifting, and also attracts termites!  These repairs are often extremely expensive.  Having gutters is a way to help prevent these scenarios.