12/09/2019
We use pressure-treated 4x4s quite frequently in our business. They can be expected to last for years in all sorts of weather. We try to pick the highest quality materials for our clients. It may cost a bit more, however, the results are what matters.
The 8 foot pieces of lumber are typically manufactured from “peeler cores.” This is the byproduct of plywood production. When a log is turned on a lathe to produce plywood veneer, the center that remains, called the peeler core, is used as a 4×4 post. These cores often contain the pith, or center of the log, which doesn’t accept pressure treatment as well. Peeler-core posts are more likely to warp and twist than posts cut farther away from a tree’s center.
When we go shopping for 4×4 pressure treated posts, we look at the ends. If growth rings start near the center of the post and expand outward, it’s almost certainly made from a peeler core. If the rings are off center, it’s not the log’s center. Our suggestion is to buy 10-ft. posts instead of peeler-core 8-footers and trim them to fit.