I moved in to a house with a badly built deck. They used 5/4" treated wood, but it's warping and bowing all over the place. There's 3/4" gap in some places.
Is it a good idea to pull the top boards up, run them through a surface planer, put sealer on them and then use them again, or are they garbage?
Also, I don't know why they started to warp as they are treated wood and they have three screws per joist placed around 16" apart. The wood was never sealed though, maybe that's it? It's only two-three years old according to the neighbors and has been in this bad of shape since I moved in about 18 months ago.