How can I repair an old particle board vanity that is crumbling?

by Brenda hall

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4 answers

William on Sep 07, 2019

Nothing much. Once particle board gets wet and dries it crumbles. Also can swell from the moisture. If it's not too bad you can try a few coats of a water based polyurethane to seal the areas temporarily until you can replace it.

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- Brenda hall on Sep 07, 2019
  
  thanks for the reply, small bathroom with vanity right next to shower, bad placement by previous owner. will give it a try.
  
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Tish on Sep 07, 2019

You need to keep the humidity low and the particle board away from sources of water.
Use a solvent-based polyurethane (exterior grade) on the particle board that is crumbling. This will soak in and hopefully glue it all back together. Think about gluing a thin plastic of some sort over the area so that the particleboard isn't exposed to moisture anymore.
I got this off of Google after checking that my idea was correct... LOL.

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- Brenda hall on Sep 07, 2019
  
  thanks for the info, small bathroom, shower next to vanity, bad placement by previous owner. will give it a try. thanks
  
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Doc Benway on Sep 07, 2019

Get wood glue & sawdust. Apply glue add sawdust. Let dry, prime and paint then cover with Thompsons water seal. Dont forget to use silicone caulking around taps and edge of sink

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- Brenda hall on Sep 07, 2019
  
  thanks for the info, sounds like this might work.
  
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- Tish on Sep 07, 2019
  
  Glad I could help. I made sure I verified the info. I used to be a remodeling and renovation contractor and that was all I could think of that might work. Best of luck to you!
  
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Kelli L. Milligan on Sep 07, 2019

Once it starts to deteriorate it's done. Need to replace. Hopefully you've repaired the water leak that caused it.

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- Brenda hall on Sep 07, 2019
  
  small bathroom, vanity next to the shower, not a good placement by the previous owner. thanks for the reply
  
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