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After years of living with a low countertop in the master bath I started to fix the problem. First removed the 3'X5' mirror. used the trick mentioned here about using shims around the edges. Slow but surely it popped from the mastic.
The real problem is raising the vanity to block underneath it. One edge is tight to the corner and the other edge butted against the tub cabinet (2' tall) The kickplate has 1" of concrete then tile up against it. I removed the kickplate and had to cut all the screws on the ledger board and removed screws on the sides of the cabinet. Removed all the chalking around it and cut between the DW and backsplash. This vanity will move only 1/4" at a time but BINDS up on the opposite end. I'm levering it with 2X4's and can't believe the fight.
Any ideas how to raise it all at once (it's 6' long)
What is the standard height of a bath counter. I heard 32-34", is that what people are doing.