How to Seal Treated Wood So it Doesn't Smell


Treated wood put in place before 2003 was treated with chromated copper arsenate, and wood pressure treated after 2003 is treated with amine copper quat and copper azone or other chemical combinations. The smell they leave in the wood is not pleasant. Sealing pressure-treated wood adds a protective barrier over the toxic chemical preservatives that make the wood smell bad. It also protects the wood from cracks, twisting, warping, cupping and discoloration by blocking the sunlight and slowing the evaporation of water and chemicals from the wood.

Things You'll Need

  • Oxygen bleach cleanser
  • Scrub brush
  • Sealer formulated for pressure-treated wood
  • Clean the wood thoroughly with a scrub brush that has been dipped in an oxygen bleach cleaner. Oxygen bleach will penetrate the wood's surface without damaging the wood surface color. Do not use chlorine bleach; it will bleach the wood to an unnatural color.

  • Spray the wood with a garden hose and allow it to dry for 48 to 72 hours.

  • Seal the wood by applying a treated wood penetrating water-repellent formulated with synthetic oils and resins. Large hardware stores will have the specific sealers that have mildeweides (mildew preventives), algaecides (algae preventatives) and ultraviolet blockers. By locating a sealer that has these three items, you seal the smell of the chemicals in the wood and protect the wood from the elements that cause the smell to be released into the air. Follow the application directions on the sealant that you purchase. Multiple coats may be necessary.

Tips & Warnings

  • Wear protective equipment like gloves and a respirator if you have to cut or sand treated wood.
  • Newly installed pressure-treated wood needs to cure before stain can be applied, but it can be sealed immediately after installation.

Related Searches


Promoted By Zergnet


You May Also Like

  • About Wood Sealer

    Wood is a common material used for many things. Wood can be quickly and easily damaged if it is exposed to moisture,...

  • How to Seal Wood

    How to Seal Wood. Sealing wood protects it from the elements, slows sun and water damage, and keeps the wood from deteriorating.

  • How to Seal Pet Odor on Floors

    Pet urine is difficult to clean, and is rarely ever removed entirely from floors. The pet's age, diet, health and gender can...

  • DIY Natural Wood Sealant

    Sealant is beneficial for any type of wood item, especially for outdoor wood and wood furniture indoors that may come in contact...

  • What Are the Dangers of Pressure-Treated Wood?

    Pressure-treated wood once contained chromated copper arsenate as a preservative. This substance protects the wood so that the wood can resist damage...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!