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I don’t think there’s magic to it- the sound comes through air and structure/material, so attack both. You could put the machine on something sound deadening, there are heavy black rubberised matts for the purpose but probably other things would do. Block all the gaps, brushes or foam in the door frame and under the floor. Then I don’t know if egg box/foam for airborne sounds or more weight for structurally-borne sounds would be more useful.
I had fire door blanks put in the double understairs doors I did, and sealed and overlapped as much as possible. You can watch TV or eat dinner in the room with the washing machine going under the stairs.
t.o.-
I like the idea of fire doors. Not sure they sell them for kitchen cupboards though - Masterchef has gone horribly wrong if you need one of those! :D
hippy
Anyone got any hot tips for insulating cupboard door (washing machine) for sound? There's not a lot of room between front of machine and inside of door so I figured just stapling something soft might help or gluing on some foam. Also need to add a strip to cover the bottom of it under the door as that's where most of the sound leakage is coming from.
No, it's not the spin cycle that's noisy so no point suggesting reducing spin RPM.