Chook Removal In Sub Floor Vent It is really helpful when installing drywall to depart a 1/four″ hole 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 before panel set up. Sub Floor http://trevortfoyi.imblogs.net/45338866/emerging-answers-for-practical-products-for-sub-floor-ventilation-fan