What is Green Lumber?

Green lumber is lumber which has not been dried or treated. It is as close to the original tree as it is possible to get. Typically, lumber is dried and treated before it reaches the market, so that it is ready to use. However, it is possible to obtain green lumber, and some individuals actively seek it out for specific projects and needs. When sold, green lumber is usually clearly identified, so that people understand that the lumber is still green. The most important thing to know about green lumber is that it has a very high moisture content. Wood is filled with natural capillaries which are used by the tree to transport water and nutrients, and when it is freshly cut, it is chock-full of water. As it dries, wood shrinks significantly, and it can also warp. If green lumber is used in construction, it may cause problems as it dries, warping the underlying structure and causing structural instability. This type of lumber has also not been treated with any substances which are designed ... more

Often called garden-grade lumber because it is stacked outside in a lumberyard. Has a higher moisture content and is usually less expensive than kiln-dried or air-dried lumber. It is also easier to nail, but it will shrink as it dries, causing nails to loosen and gaps to appear between boards. ... more