Does wooden flooring need to be raised to resist moisture?

Modern wooden flooring is already very moisture-resistant, so there is no special need to raise it. The advantage of raising the floor is that it allows for leveling, not moisture resistance. Once the wooden joists are raised, an enclosed space is created beneath the subfloor, which actually tends to trap moisture more easily. Raising the floor to resist moisture is only a temporary solution. Even if charcoal is placed underneath, the charcoal will eventually become saturated after absorbing moisture. It is therefore recommended to drill ventilation holes in the raised space to allow air circulation.