When it comes to the age old question of whether to use solid flooring or whether to use engineered flooring, there is the question of thin solid flooring. With solid hardwood flooring available in widths such as 3/8 of an inch, the question becomes more complicated. Solid 3/8″ flooring can be glued down, which is one benefit over usual 3/4″ solid flooring, which is pretty much nail down only. (Depending on who you talk to, naturally, but this is the safest bet.)
Additionally, these thin solids are handy when it comes to tight spaces that can come into play during a renovation. However, the solids will still undergo the same heightened expansions and contractions because it is a solid, natural product. (Expansion and contraction is usually measured by tangential shrinkage/expansion and radial shrinkage/expansion) Engineered flooring is not subject to as a result of its construction of perpendicular plies.
Despite the smaller width, the same balance of pros and cons still applies to these formats: With engineered flooring, you’re getting a wear layer that is probably thinner than the total width of the solid flooring, and therefore cannot be sanded and refinished as many times. However, the engineered flooring will be more dimensionally stable than its prefinished counterpart, and while the smaller width may lesson the effects a bit, the solid flooring will still move in service.