I saw this at Lowes. It claims to be exterior grade and for outdoor projects. Comes in 15/32" and 23/32" A-C grade. I bought a sheet to make a center console. Mostly to examine its qualities. I have some epoxy I got cheap at the Boater's World sell off so not much lost if it doesn't work well. This sheet was about $25, 3/4" runs about $35 I think. It is supposed to be made using Radiata pine. This type of wood is not rot resistant but not any worse than some other wood commonly used. In the past, I used Radiata pine boards for a project. It was some of the nicest wood I have found in a long time. Straight grain, no twisting and saws nicely.
Here is a description. It is 5 almost equal plies. The top ply, A side, is a little thinner but not much. I looked at the whole stack they had and about 1 in 10 sheets has voids on the edge. Voids on the edge means voids in the middle. The A side is really nice. The C side is really C minus. There are splits, knots and a lot of filled knot holes. The sheet rode around in the back of my pickup for two weeks. It was covered but a little water gets in when raining and it rained a lot the last two weeks. After this, it was not perfectly flat but definitely better off than the twisted, warped piece of CDX that has been my bed protector for the last year. I don't know if the top ply will check if bent but it seems to be bendy springy stuff, more so than fir or pine plywood. I read one review of this stuff and a guy commented that some scraps have been in the back of his truck for several months. The pieces have not delaminated and are fairly straight
So far, I have cut about 8 pieces, using about half of the sheet. I have not hit any voids, but that doesn't mean there are none there. I picked out a piece that didn't have any voids on the edge. My saw blade isn't the best but it cuts this stuff well with minimal splintering, more like fuzz on the cut edge. I drilled about 10 pocket holes to attach the pieces. The Kreg type screws seem to hold well.
Next up is to epoxy and tape the joints. I dripped some water on the wood to see if it is waterproofed, it does not appear to be treated in any way. It soaks up water fine so I'm hoping it takes up epoxy. I will report back when this is done.
So far, I have concluded that I would not build a boat using this stuff. I would not build a structural part of a boat with this because of the voids. For non structural parts it is fine if you can hide the C side. It is easy to work and we will see how it holds up as a center console.