Both the cabinet floor and the supports underneath needed to be restored to prevent further damage or mold issues.
Bad cabinet floor under sink.
Then trace a cutting line about 3 in.
Damp rotten particleboard holds water.
Plywood to the interior size of the sink base.
Remove the old swollen floor.
Here s a way to prevent that.
The floor of the sink base cabinet was warped rotted and cracked and in bad need of repair.
How to replace the bottom piece of wood under my kitchen sink.
If you have a particle board floor underneath your sink that is showing signs of water damage you can tear it out and replace it to prevent the growth of mold.
In from all four edges.
Next cut a piece of 1 2 in.
Moisture destroys the particleboard most cabinets use for the floor below a kitchen sink.
The space beneath the kitchen sink is exposed to high levels of humidity and may even be exposed to water through leaky plumbing.
Theoretically the inside of your kitchen sink cabinet shouldn t get wet but in the real world that s just not the case.
Over time this can cause the wood under the sink to rot.
The water damage was extensive enough that it also rotted the framing below and affected the floor underneath the cabinet.
If left unrepaired the leaks can cause significant damage to the cabinet floor by promoting wood rot warping and mold or mildew growth.
Water leaks are a common occurrence under kitchen sinks.