Washing machine cabinet. I’m being dim here, aren’t I?

That is not a good solution. Glad the STW hivemind was able to move things along.

Acoustic matting? Before we got a new wooden floor put in we had our washing machine on top of a paving slab on top of floor boards in the corner of the upstairs ‘laundry’ room.

Wooden floor? Waiting for the backlash on that.

The paving slab raised the machine of course, and it added little to the machine’s mass. But it did steady the machine on the Victorian floorboards.

With the new floor and no paving slab the machine is steady and quiet.

Right, well I think we can close this thread now.  Just popped to the old fella next door to check for noise as had two duvets on a spin cycle.  No noise or resonance to speak of on his side (stood at the top of his stairs so effectively the closest point and could hear it at full chat but it sounded so distant I had to really listen for it.  I’m both surprised and at the same time massively relieved.   The silly cabinet stays.

Edit Never mind 😆

Could you not get a clothes airer that folds up more slimline? it seems quite wide. Is it an electric one hence the bulk?

Then you could lose the cabinate, maybe even use the wood to make another bit of shelving just above the height of the washer.

Equally, does the business end of the hoover fold flat like this:

https://cdn.shopify.com/s/files/1/0409/3208/1821/products/s-l500_004ea62d-9bde-4cb7-8082-0969c3b664a3_500x500.jpg?v=1601998740

Could you hang it from the wall where it currently is to free up a few inches of floor space?

The silly cabinet stays.

Why? What purpose does it serve other than taking up space?

The purpose it serves is to free up FLOOR space.  It’s serving that purpose perfectly and the noise issue does not affect the neighbour in any way shape and form so all is good.

Why? What purpose does it serve other than taking up space?

I’d think the box it is sat upon would also serve as a resonator box, for extra vibration noise!… at least until the vibrations from the washer cause it to collapse.

I just think you are looking at the problem backwards by fixing symptoms rather than causes.

surely the correct solution to remove vibrations and free up floor space is to suspend the machine from the ceiling.

https://www.matousch.com/the-source-periphery

How the **** did you get a washing machine in the loft 😲

How the **** did you get a washing machine in the loft

A more pertinent question would be “why would you want to?”