"Here’s what we did to solve the noise and vibration problem. I can’t take credit for this solution as we read this solution in another review and tried it and it worked for us. I am VERY grateful I found the solution on the Internet. We have a weak floor that vibrated & the washer on spin cycle would travel around the floor due to the vibration. Leveling the washer was NOT enough to stop this problem. We had a local lumberyard cut us three 1"x12" solid oak boards to place on the floor as a solid base for our washer and dryer. We also put a stall mat on top of these boards. A stall mat comes in 4’x6’ dimensions and is ¾ inches thick. It’s made of an extremely dense rubber material (one of these mats will weigh 100 pounds or more). The stall mats are available anywhere farm materials are sold. Sometimes they are called cow mats, or horse mats or even barn mats. They are made to cushion the floor for a horse or cow (and can withstand the wear and tear of 1400+ pounds of animal and their hooves and waste each day so they’re VERY durable). I bought ours for less than $40 so it’s NOT an expensive solution. You can cut the mat to size with a common utility knife. Just lift the edge of the mat and cut the proper width. It’s not difficult. Once the washer and dryer are placed on this solid base, you won’t have ANY problems with vibration or noise. Even an apartment installation would be adequate to dampen vibration to those below the apartment. It works great. The base looks professional too if you make it to the exact size of the washer/dryer combo".

I will post the results after installation.

I'm interested to hear how you like it. Thanks!

Glad to hear it's working out so well!

Think of it this way, you will be sorry if you change your mind after the units are placed. It cost us $125 to have a carpenter do it, but it's pretty straight forward for a do-it-your-selfer.
That being said, I could be wrong and it might be fine without reinforcement.

As far as the good vibrations pads go,....there still is a chance that your washer will vibrate off of them with an unbalanced load. That might cause damage to your appliances and laundry room. You don't need those pads if you get a stall mat.

My washer manual tells me not to install on second floor without reinforcing the floor. These are powerful machines! Anyway I'm sure glad I took the extra steps....quiet as can be!

I wouldn't think you'd need the extra inch.. I think your 1.5 with mat will be fine. That probably brings you close to the thickness that I have (3/4") over my hardwood.
I don't know how thick a subfloor is but that gives you at least probably close to 2-1/2 inches of wood under 3/4 inches of rubber!
If you go higher than that the weight of the extra wood might get too heavy for the floor....you'd have to ask an expert on that one! We decided to stick with 3/4 because our machine weighs I think around 400 lbs. and we already had hard wood base.

Ask if you have any more questions!

Please do come back and post when you get it all installed and let us know how it's working for you!

they will be insulating and putting up sheetrock soon. we're expecting more snow here so can't be sure when we'll finish but i'll post my results ...some day (hopefully) soon. thanks again!

Well one thing's for sure, if your washer does fall off those pads, at least it won't walk across the floor! :)
Good luck on your new home!

i also ordered the hockey puck type rubber feet thinking i would use these as well, but couldn't due to height restrictions (upper cabinetry in the way). i was concerned my seemingly foil proof method had to be abandoned, but i quickly learned there was no need for concern.

seriously. call the feed store and get a barn mat! it's quite possible both units would have been fine without it, but i didn't feel like finding out. a very simple and wonderfully inexpensive solution to what can be a very big problem. i'm also thinking the mats help to absorb sound as well. just so thankful not to have any issues for once!