In general, it is possible to put new laminate over old laminate countertops. However, there are several factors to consider before deciding to do so:
Condition of the old laminate: The old laminate should be in good condition with no major damages, such as cracks, chips, or peeling. If the existing laminate is damaged or warped, it's not advisable to apply new laminate on top.
Smooth surface: The surface of the old laminate should be smooth and free from any irregularities. If there are bumps or imperfections, they may show through the new laminate or cause it not to adhere properly.
Cleanliness: The old laminate must be thoroughly cleaned and degreased before applying the new laminate. Any residue, grease, or dirt left on the surface can hinder proper adhesion.
Adhesive compatibility: Ensure that the adhesive used for the new laminate is compatible with both the old laminate and the material of the new laminate you intend to install.
Edge treatment: If you plan to add new edges or trim, make sure they can be properly attached to the existing countertop and the new laminate.
Thickness: Adding a new layer of laminate will increase the thickness of the countertop. Ensure that there is enough clearance for appliances, such as stoves or dishwashers, to fit properly once the countertop is thicker.
Keep in mind that while adding new laminate over old laminate can be a cost-effective and relatively straightforward solution, it may not provide the same level of durability and longevity as a complete countertop replacement. If the old laminate is in poor condition or if you desire a higher-end look, you might want to consider removing the old laminate and installing a new countertop surface altogether.
If you are unsure about the process or encounter significant issues during the installation, it is recommended to consult with a professional or a qualified contractor to ensure the job is done correctly and safely.