Said It Here

How to tighten a loose faucet on rotted particle board

When water damage rots the underlying MDF or particle board, the mounting hardware loses its grip and has nothing solid to anchor against. This prevents the faucet from staying tight, causing it to wobble continuously every time the handle is used.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    Remove the faucet, glue and screw a new piece of plywood underneath, and drill a new hole.
  2. 2
    Install a small metal plate or tie down plate between the faucet bracket and the damaged counter.

In their words

Unedited, most upvoted first, each linked to the thread it came from.

The kitchen faucet is quite loose. Looking for advice on how I can tighten it up.source ↗

Hafrunt · r/Plumbing · 1 upvotes

It got loose because the countertop underside is some Mickey Mouse shit MDF particle boardsource ↗

the underside of the countertop is rotted.source ↗

supitsgreg · r/Plumbing · 1 upvotes

Where this came up

People with this problem also raised