Comment: I learned about Summit Environmental (SES) from a question posted on FB in our local community. I reached out to SES for an estimate to encapsulate a vented crawlspace. The crawlspace produced musty odors in the living space above the crawlspace during humid months. SES evaluated the crawlspace, provided a detailed explanation of their proposed work, and identified a potential issue that required analysis by a structural engineer. The engineer's recommendations were incorporated into the proposed solution. The cost was reasonable. The work crews were professional and always cleaned up the space before they departed. I would recommend SES for crawlspace encapsulation.