Infusing preservative intensely in wood products was invented by Dr. Karl Wolman more than 70 years back. Pressure treating is the process of infusing a chemical preservative deep into the wood. The process makes the wood pretty flavorless to all pests, insects, and fungus. Its lifespan is said to be more than 20 years even under the harshest conditions.
The wood product is positioned into a humongous cylindrical holding tank, and the tank is depressurized to get rid of all air. Then the tank is filled with the preservative under high pressure, forcing it deeply into the wood. The tank is then exhausted and the wood is removed from the tank. Residual preservative can be used again.
Hazards of Pressure Treated Wood
The Environmental Protection Agency (EPA) has prohibited arsenic for all uses, except for the treatment of wood as arsenic is a known carcinogen. The most commonly used substance in pressure treated wood is chromated copper arsenate (CCA), which contains the toxic substance in extremely high levels. In addition to arsenic, CCA contains chromium and copper. Pressure treated wood is repeatedly used in the construction of playground equipment and decks. People may be exposed to the hazards of arsenic in pressure treated wood by inhaling dust from the wood. Inhaling fumes when the wood is burned also can be dangerous. One can be exposed to the dangers of arsenic through soil as well, if the arsenic in the pressure treated wood leaches into it.
Exposure to arsenic in the pressure treated wood can also cause many other health risks such as heart disease, kidney failure and diabetes. The EPA has recently classified CCA as a restricted use product, for use only by certified pesticide applicators. Pressure treated wood containing CCA is no longer being manufactured for use in the majority housing settings, including decks and playsets. However, CCA has been employed to pressure treat lumber since the 1940s. And, most of the wood used in outdoor housing settings has been CCA-treated wood since the 1970s.
Free Initial Consultation - If you or a loved one has ever suffered a side effect from Pressure Treated Wood, please fill out the form at the right or contact us today at 1-800-780-2686.