Wolman pressure treated wood is lumber and plywood which has been pressure-impregnated with Wolman wood preservative chemicals to protect it against wood destroying organisms.
Untreated wood is subject to rot and decay caused by fungi and wood eating insects such as termites.
Certain strains of fungi utilize wood fiber as their food supply, causing the wood to decay and lose strength. Termites, the most common type of wood eating insect, subsist on the cellulose content of wood. In the treatment process, however, preservative chemicals are pressure impregnated and chemically fixed into the wood cells. They react with wood sugars to form highly insoluble precipitates which render the wood useless as a food substance for fungi, termites and other wood destroying agents. This preservative treatment results in lumber and plywood that retains its structural integrity 10 -20 times longer than untreated wood.