Water damage on sub floors! What to do?

Olena Beloous
by Olena Beloous
We are renovating our new home (it was built 1981), The other day we have discovered one more surprise from previous owners. When we lifted old laminate floors in the kitchen we found out that sub floors have had water damage. Kitchen cabinets stand on ripped linoleum flooring. Between sub floors and linoleum I can see another underpayment board which was totally destroyed by water.That board and linoleum was removed and new laminate floors were installed over the water stains on sub floors.
We do not see any mold, even under the sink cabinet the sub floors look dry.
What do we do in this situation?
Replace sub flooring? Or put new plywood on top?
Thank you all!
  3 answers
  • Rishia O'Neill Rishia O'Neill on Dec 18, 2014
    Always replace ALL rot wherever you find it.THEN figure out HOW it got that waY...and FIX IT FIRST.
  • Sue Myers Case Sue Myers Case on Dec 19, 2014
    replace anything rotted as Rishia said, water stains are ok. best to rip up and just replace the subfloors. If there is water stains there could also be swelling of the wood which will make it harder to level out.
  • Diana Deiley Diana Deiley on Mar 26, 2016
    Better safe than sorry. Replace it. You'll be happy that you did it right the first time, and you'll save yourself heartache and money at the same time. Best of luck. p.s. Great question.