Water leaks are a common occurrence under kitchen sinks.
Bad cabinet floor under sink.
How to replace the bottom piece of wood under my kitchen sink.
Both the cabinet floor and the supports underneath needed to be restored to prevent further damage or mold issues.
Next cut a piece of 1 2 in.
Moisture destroys the particleboard most cabinets use for the floor below a kitchen sink.
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.
Plywood to the interior size of the sink base.
Damp rotten particleboard holds water.
Then cut out the middle section of the swollen sink base with a jigsaw.
In from all four edges.
Remove the old swollen floor.
Remove the drain lines and garbage disposer if there is one to get maneuvering room.
There s often a leak either from the trap or the faucet and if water sits on the plywood floor it will eventually rot it out.
Then trace a cutting line about 3 in.
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.
Theoretically the inside of your kitchen sink cabinet shouldn t get wet but in the real world that s just not the case.