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Best Way to Install Treated Lumber

Treated lumber provides an insect-free and rot-resistant building source that can last many years and provide beauty to any building project. Its durability has led to its use in decks and numerous other projects. Because treated lumber has chemicals added during the preservation process, it is important to handle this lumber with care and follow safety instructions.

Items needed:



  • Breathing mask

  • Sealant

  • Eye goggles

  • Large clothe to place under the wood

  • Work gloves



  1. Put on the goggles, gloves and mask prior to starting this task for protective reasons.

  2. Lay the wood out on a large cloth. The cloth should be large enough to cover the work area. To work with treated lumber, it is best to work outside or in a ventilated area. The lumber has been treated with chemicals and improper inhalation can cause unhealthy reactions.

  3. Sand the wood and assemble the project according to the manufacturer instructions or your blueprint design.

  4. After you have finished assembling the wood, layer with two to three layers of sealant, which protects the wood from cracking or splintering, and seals in the chemicals.

  5. Wash your hands thoroughly with soap and water, when your task is completed.