I often work with Clouse Floors helping them to find and solve moisture issues with wood floors.  In many cases these issues are related to wood floors installed over crawlspaces in older homes or in homes which have been remodeled.  We often find wood floors or sub-flooring rotting, cupping or warping.  It is amazing how little moisture differential is required to cause severe warping of a wood flooring system.

During a recent conversation with Dan Tremble at Clouse Floors he asked if I knew of a vendor selling specific ventilators he could recommend to his clients.  While I often see them fabricated from components I have not seen a system sold as a ready to install unit.  While browsing the Journal of Light Construction this afternoon I saw they had one advertised at Tjernlund.com.

Normally these are installed as part of generally correcting condition as much as possible to reduce humidity at the crawlspace.  This could include improving drainage, installation of ground cover, drain systems, ect…