Here's a little progress update! I managed to hang the wave wall! One of the MDF sheets warped a bit too much for my taste so I'm going to have to screw it into the wall afterall. For the time being, however, these panels are installed on Z-clips. I used two 18-inch Z-clips per panel.
First, I painted above and below where the wave would hang. I used the same grey that I used on my soffits so the wall would just disappear. Mouse Ears black gets messed up too easily.

Next I installed the z-clips. Lots of very careful measuring here!


Then, up goes the first panel. The wall isn't exactly straight (the middle of the wall sticks out into the room a little more than the edges) which made installing this panel a little tricky. This is a 16-foot wide wall, by the way.

Up goes the second panel and blammo!




I'm REALLY proud of this. The execution isn't perfect but I'm also not finished with it yet. There's a 1/2" gap between the panels (by design) that I forgot to fill in with the grey paint. It also occurred to me that I should have painted the edges of the piece the same color as the wall. The edges are just covered in sanded drywall compound to minimize warping.
I wound up putting three coats of clear finish on the piece sanding gently between coats. The sanding was a total pain in the butt. I completely understand now why these panels sell for hundreds of dollars each.
Things I wish I'd done differently (already):
- Mount the MDF to 1/2" high quality plywood to minimize warping
- Use higher quality MDF so the finish would be smoother (way too much surface area to sand)