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I would first want to know what is causing the sagging. Possible causes could be undersized support beams or floor joists. Could this problem be caused by some type of leak?
I know how ice maker was leaking at one point and we took it out so there was no permanent damage.
Whatever the cause this could be serious and needs to be checked out.
Val
You may have a leak under your fridge (possibly the ice maker or water line) I would get someone to check that out first. Then you will have to see if the floor is rotted or molded because of this and it will need to be reinforced here are some ideas to help you out
https://www.youtube.com/watch?v=o0F-GQaBcVU
https://homeguides.sfgate.com/repair-floors-damaged-refrigerator-leak-82331.html
I think you need to add supports under the house. Like stacked cinderblocks and some wood
I agree, you're going to need to add supports under the house and potentionally have to replace the sub floor as well.
Have a professional come in and take a look. Something is very wrong if the weight of your fridge is causing the floor to buckle and sink.
Definitely call a carpenter to properly stabilize the structure.
Hope this Helps! Jeremy - https://pahjodesigns.com
Lack of floor support strength or rot due to a water leak could be the problem. A properly built floor should hold a fridge.
You should go underneath and check for rot. If you are trying to fix without replacing, it's only a matter of time. You can brace from underneath and jack it very slowly.
i would add more support - like an extra sheet of plywood underneath the fridge.
I would check to see if there is a water leak coming from the refrigerator. Once you have figured out if that is causing the floor to sag, a piece of plywood may help!