First of all, is my terminology correct? These are brands of synthetic wood alternatives:
Is “construction board” the generic name for this stuff? I think some people call them “building panels”. I ask because my search for Invidious (Youtube) vids came up short. I would rather not have a brand-dependent search query because I have to try many queries as it is to try to get this answer.
Qboard offers a factory made corner piece (called Qorner; attached to this post). I was trying to work out how I could do that myself. I’ve never worked with #constructionBoard, nor have I used a router, but I suspect they use a router to cut a “V” in the board without competely bottoming out (but nearly), so the outer skin does not get cut. Has anyone done this?
Does the shutoff valve have to be in the shower? Could it be moved to the other side of a wall outside of the shower? The seems like the best long term solution, especially since you have to deconstruct the concrete block it's embedded in anyway.
From what I know of all of the "wet area" products you mentioned, you can cut the materials quite easily and put pieces together to build whatever you want. Once you have the walls and other structures put together, you have to tape and seal all of the joints to prevent water leaks. All of these products have tape/sealant specific to the product line.
The valve joins a steel pipe to PEX. Both pipes are still bedded in concrete even though I cleared away the concrete that the valve was embedded in. The valve could be moved but the pipe joints remain in place because it would be too big of a project to unbury all of it, cut the steel pipe & thread it, etc. So if I move the valve the box would still need to be accessible in case the joints fail.
I need to update that other thread. I’ve already drilled a 14mm hole in the wall and ran a shaft through it which is now attached to a right angle gearbox mounted on the new valve, which has a replaceable cartridge. So what’s left to do is getting a custom handle on the shaft that goes through the wall and I need to build the box.