When looking to save on OSB (Oriented Strand Board) you may come across some foreign jargon. “Off grade” doesn’t sound good, and neither does “off spec”. Shop grade has a better ring to it, and so does Second Choice. When you think about it, Second Choice is the second place of choices. Not bad. Does that come with a trophy? If it does, Reject grade would get a participation trophy. Trophies aside, when you dig deeper you find out that all of these grades serve a purpose, it just depends on what you are building.
Reject grade typically refers to a panel that may have some air pockets or blows in it. You can get pretty good value out of a Reject panel if you are building large crates. These panels respond well to large cuts, as opposed to small ones. Unlike the rejects in high school, the Reject grade can be aesthetically pleasing and super cost effective if you are buying wholesale. We may need to rethink that participation trophy…
Shop grade is technically a higher grade than Reject grade, but it may not look as nice as a Reject. Weird right? The upside is that a Shop grade panel has more structural integrity. It will typically respond better to smaller cuts from a CNC router than a Reject panel. This panel is great for sheds, industrial applications, or even furniture.
There are other grade names that are useful. Economy is a mix of Shop and Reject, usually heavier on Shop. Non-cert is similar to Shop grade.
Second choice could mean anything really so it’s better to look for grades such as Reject, Shop, or Economy that are more defined. When the grades are further defined, the buyer can learn if the panel they are interested in will work for their next project. If you hear Second choice and the seller can’t tell you what makes it Second choice, RUN! And on that run, tell your robot watch to call Silvaris. We know the grades.