PT Deck splintering

[Pete F.]

Assuming it has low traffic areas maybe with a piece of porch furniture.
Pull a piece from the hidden space and use it to replace the deteriorating piece.
Flip the “bad” piece and install in the somewhat hidden area.
Or just fit a new piece for now.
Posted from my iPhone/Mobile device

[piemma]

Jeff, what Pete said. Personally, one of our decks was like that last year and I demoed it and rebuilt with Azex.

[Guppy]

I say cut them out… I replaced mine when it got like that,,, but worse than what yours sounds like….. splinters suck….