I would recommend setting all the base cabs unattached just clamped together then draw a line on the floor around them and remove the flooring giving yourself a good 1 4 inch clearance margin.
Install island on floating floor.
Floating floors lay flat thanks to their weight if laid in a single sheet or tight puzzle like connections according to flooring america.
I understand that you can t put a floating vinyl floor under kitchen cabinets but what about a floating island in the center of the kitchen.
Installing the floating floor 1 roll out the foam underlayment in a single layer across the floor.
Size the foam underlayment and cut it with a utility knife.
Be sure to cut the floor to allow for your 1 4 inch expansion joint.
Unless there are severe changes in the relative humidity the floor will not move very much and kitchen cabinets can be installed directly on the flooring.
This method can also be used around walls that separate rooms that will be.
If it were my house i would cut the floor where the island is going to sit.
Place the cabinets on the concrete using some 2x4s glued to the concrete with construction adhesive as anchors.
I have installed dozens of floating floors and cabinets.
This give will stress the miter joint of the counter top and potentially cause a gap to open.
Since a floating floor is usually installed over a thin foam pad there is a bit of give to the floor.
This makes a floating floor much easier to install and remove than a nonfloating floor but it also allows the floor to expand move shift and bubble in certain circumstances.
A floating floor is one that is not screwed or nail or fixed to the sub floor instead the floor covering usually chipboard gypsum or cement fibre boards floats on top of the insulation layer.
Then trim the base of the cabinet to cover your expansion joint.
In this video i show you how to install laminate or vinyl plank around an island.
Mark the perimeter or outline of the base of the island on the tile floor with painter s tape.
2 lift and turn the island cabinets on their sides to.
What i mean by floating island is that it will be free standing on legs underneath ikea leg stands and not bolted to the floor like a permanent island would be so it could be moved if needed.