Why is it crucial to provide allowance for wood movement in decking?

Providing allowance for wood movement in decking is crucial to maintain the integrity of the decking. Wood is a natural material that expands and contracts with changes in moisture content and temperature. If there is inadequate allowance for this movement, the decking can warp, crack, or split as it reacts to environmental conditions. This not only affects the aesthetic quality of the decking but can also compromise its structural integrity over time, leading to potential safety hazards and the need for costly repairs or replacement.

By ensuring proper allowances are made for wood movement, builders and owners can help ensure that the decking remains stable and functional over its lifespan, thus avoiding issues that could stem from neglecting this important consideration.