A lot of people ask how much space they need under their deck, or if extra ground clearance is even necessary. At AdvantageLumber.com, we recommend at least 18 inches of open air under the joists. Anything less is risky. But why?
How Much Ventilation Does a Deck Need?
When planning a new deck, it’s easy to get caught up in choosing the right decking, railing, and layout. But there’s another detail worth thinking about before construction begins: how much airflow the deck will have underneath. Without enough ventilation, moisture can linger around the boards and framing, potentially leading to wood movement, decay, and …