dave1949
Super Star Member
Well, the good news is that the heat pump was replaced this afternoon giving me a reprieve and now we have a cool environment in which to work.
The culprit is a beam from front to back on the right 3rd of the space. I've started grinding the plywood down but even if its 3/4 that hardly leaves me much, making up for a 9/16 ridge.
What a mess..
The beam hump can happen with different wood species or materials like a laminated beam. It was probably flat at one time until different shrinkage rates changed it. Be glad it wasn't tiled already.
With care and some skill, leveling cement or compound, you can feather that out over a distance. If it's done reasonably well, you will be the only person who knows or notices it, unless ray66v visits. :laughing:
Or, it would make a great place for an interior wall.