I am planning to buy 5 pieces of 3 cm precut , edged, holed, slab granite to build a bathtub. Only one side will be exposed and I plan to support that with a timber that runs lateral. The finished dimensions will be 25" X 60" X 36".
Since only one side is not supported by a wall, I was planning to use a timber mounted laterally midway up the open side.
We just finished doing a granite counter top and used epoxy for the joints. I would think that may be enough but I would also use a silicone joint compound as well.
Any more ideas?