Sub Ground Ventilation It is really helpful when installing drywall to go away a 1/4″ gap between the concrete flooring and the bottom of the drywall to avoid moisture contamination. Install 1/4″ spacers between the drywall and the DRICORE® Subfloor panels earlier than panel installation. Why Do You Want http://finnplwoa.blogstival.com/20363506/techniques-for-sub-floor-ventilation-cost-helpful-answers