How are pressure-treated woods different from standard lumber?

Pressure-treated woods are distinct from standard lumber primarily because they undergo a specific chemical treatment process designed to enhance their durability and resistance to decay, rot, and insect damage. This process involves placing the wood in a pressure chamber where various preservatives are forced deep into the wood fibers, ensuring that the treatment penetrates thoroughly. As a result, pressure-treated wood is particularly suitable for outdoor projects and environments where moisture and pests are prevalent, such as decks, fences, and landscaping projects.

While it is true that pressure-treated lumber can be heavier than untreated wood due to the added preservatives, this is not the defining characteristic that sets it apart. Similarly, while the manufacturing process for pressure-treated wood may incur additional costs associated with chemical treatments, this does not distinguish its primary utility. The ease of cutting and shaping wood can also vary, but pressure-treated lumber can sometimes be more challenging to work with due to the chemicals, countering the notion that it's easier to manipulate.

Thus, the defining feature of pressure-treated woods is their enhanced resistance to decay and damage, making them a vital choice for specific applications in construction and carpentry.