Lumber Should Be Tempered When Used For Outdoor Projects

When it comes to using wood for outdoor projects, it's crucial to understand the importance of proper tempering. Tempering is the process of gradually exposing wood to changing temperatures and humidity levels to reduce stress and prevent it from warping, cracking, or twisting.

Wood is a hygroscopic material, which means it absorbs and releases moisture from the surrounding environment. Untempered wood exposed to outdoor conditions undergoes constant expansion and contraction. This can weaken the wood and lead to structural problems.

Temper the lumber properly before starting your project by following these steps:

Bring the wood inside: Several days before you plan to use the wood, bring it inside and let it acclimate to the indoor temperature and humidity.
Store it flat: Place the wood on a flat surface with spacers to allow air circulation and prevent warping.
Shrink-wrap it: Cover the wood with shrink-wrap to protect it from moisture absorption.
Monitor the moisture content: Use a moisture meter to check the wood's moisture content. Aim for a moisture content of 12-15% for most outdoor projects.

Once the wood has reached the desired moisture content, it is ready to be used for your project. Proper tempering will significantly increase the longevity and durability of your outdoor wood structures.

Remember, the acclimation and tempering process can take several days or even weeks, depending on the species of wood and the initial moisture content. Plan accordingly and allow ample time for the wood to adjust before you begin your project.