We are trying to install the joist hangers and the joists, but the 2x10s are slightly different sizes. The problem is that some of the boards are 9.25" and some are 9.5" and some in between. So if all the joists are hung at the same level, then the top of the boards are all at different levels, which would lead to a bumpy deck. How is this best handled?
How to install 2×10 joists of slightly different sizes
deckdeckingjoists
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Best Answer
Use face mount joist hangers and set them so that the tops of the joists are all level.
You could try to return the joists and demand a batch that are the same size. Or shim them, which is less than ideal.
As stated in comments, joists can vary in size based on moisture content. Not only that, but they'll expand and contract a bit with moisture changes in the future, as well.