Washer is out of balance in the dpin cycle since we installed a new floating floor in our laundry room. Have tried rubber feet for levelers and sticky pads to floor, nothing seems to help.

A vibration problem is about the hardest thing to diagnose long distance but I will give you the most common things to look for.
Shipping brackets and materials not removed from the machine. You should be able to move the basket around easily by hand. Go over the installation instructions and make sure everything has been removed.
Leveling legs and lock nuts misadjusted or loose. You want the legs adjusted as low to the floor as possible. The higher it sits, the more movement it has.
Weak floor. If you can stomp the floor and have pictures rattle on the wall, you will have vibration problems with the washer. If it is on a laminate hardwood floor, you will have vibration problems. These floors have too much bounce for a washing machine.
The tub support to stiff causing too much vibration to be transferred to the cabinet or not allowing the tub/basket to return to the upright position so that it starts an out of balance spin. Put the washer into a cycle and let it agitate. Before it goes into a spin, open the lid and see if it is leaning awkwardly to one side. If the washer has some years on it, this may be your problem. If you remove the front panel you will see the thick washer the whole unit sits on. If it seems the unit is stiff , you may try spraying a LITTLE wd40 on the base it sits on so it slides easier, but just a little.
Check these things out and you should find your problem.
Thanks/Mike

Wood laminate flooring is never a good idea in areas that can get wet often. But, that being said, there should be leveling feet on the washer which should allow you to get it stable on the floor, if that's what your problem is. If your problem is that the washer tends to walk around the room when in the spin cycle, well that is partially due to the fact that washers often vibrate when they spin, especially when spinning large, bulky objects like quilts and comforters, that the feet on the bottom of washer are smooth plastic, and that smooth plastic feet don't stay in one place to well on wood laminate floors.

is there rubber on the bottom of the feet?also i've seen in laundry rooms at one time or another the vent line on the dryer popped off or had a hole in it and lint got on the floor and under the washer,it finds it's way under the feet,try tilting the washer back and with a steel brush or sand paper clean off the bottom of the feet and see if that helps,also clean the floor under the washer.you may have to replace the rubbers on the feet.good luck

you may need to put some anti vibration shock pads under the legs or some two sided tape to put on the feet to help secure it to the floor it may be slipping on the new floor surface

it probably is either a broken spring or a weak floor in laundry room...doubtful on the rubber feet

Make sure machine is level and all four leveling legs are solidly touching floor at the same time. Make sure leveling leg locking nuts are screwed up to lock legs in place. Check floor for firmness. (try bouncing up and down in front of washer to see if the floor has excessive give.) You may need to re-inforce floor. Wash larger loads. On bulky items, use a lower spin speed. You can re-spin at a higher speed after cycle is complete if you want them spun out better. (some models have a pump and spin only setting, on others, just turn on the power and then only touch the spin speed button to select a 14 minute pump and spin only cycle, then touch the start button.) The only other thing is that the new LG washers use a balance ring now, which makes the machine perform much smoother. (I know because I gave my old LG to my son and replaced it with the newer model, which now runs much quieter, in the exact same location as the old one.)

Q - My washer keeps moving around n the floor, is there any simple things that I can check ?
A - Yes, there is...The legs on the washer are adjustable, the rear legs are often ( not always ) self adjusting, make sure the legs are not stuck and that they can move freely. But the front legs can screw in and out to move the washer depending on the floor the washer is sitting on. Make sure the washer is as low to the floor as possible. When the legs are screwed out too far the washer becomes wobbly. Often on the metal style legs there are lock nuts that can be tightened to secure the legs so they don't move on you. washers where really meant to sit on a cement floor, if your washer is on a wooden floor look carefully at the strength of the floor. If the floor is moving up and down when the washer is running, the floor may not be strong enough to support the washers weight. Most main floor laundry rooms floors are nailed down, the sub-floor is more secure if the sub-floor has been screwed down. Sometimes extra support may have to be added under the flooring to add some strength

Drill small plug holes to let the washer set on the concrete