When repairing the bottom of the cabinet below the kitchen sink, it is generally best to remove the damaged section rather than simply adding plywood on top of it. Here's why:
Structural Integrity: Adding plywood on top of the damaged section may not provide adequate support and stability to the sink and the countertop above it. It's essential to have a solid and level base to support the weight of the sink and its contents.
Proper Water Damage Treatment: If the bottom of the cabinet has been damaged due to water exposure, it's crucial to address the root cause of the problem. Moisture can lead to mold and further deterioration of the cabinet material, so simply covering it up with plywood will not prevent future issues.
Fit and Function: If you leave the damaged section in place and add plywood on top, it could lead to uneven surfaces, making it difficult to open and close cabinet doors and drawers properly. It might also affect the fit of the sink or cause misalignment issues.
Repairing the bottom of the cabinet involves the following steps:
Remove the Sink: Before starting any repairs, empty the cabinet and remove the sink to access the damaged area easily.
Assess the Damage: Check the extent of the damage to determine how much of the cabinet bottom needs to be repaired or replaced.
Remove the Damaged Section: If the damage is extensive, it's best to remove the affected part of the cabinet entirely. Use appropriate tools like a saw, chisel, or pry bar to carefully take out the damaged section.
Replace with New Material: Once the damaged section is removed, replace it with a new piece of suitable material. Plywood or a similar strong and water-resistant material is a good choice.
Secure the New Material: Use screws or nails to securely attach the new piece of material to the cabinet frame. Ensure that it is level and provides a solid base.
Reinstall the Sink: After the repair is complete, reinstall the sink and check for proper fit and functionality.
Remember that if the damage to the cabinet is extensive or you are unsure about how to proceed with the repair, it's best to consult a professional handyman or cabinet repair specialist to ensure a proper and long-lasting fix.