Short answer
Laminate cabinet sides can be refinished, but paint sticks poorly to factory-finished laminate without a bonding primer and careful preparation. The steps are straightforward once you know which material you are working with.
Identify the side panel first
Laminate cabinet sides are not all the same material, and the right approach depends on which one you have.
- Melamine: a thin paper or resin layer on particleboard or MDF. Usually smooth and often glossy.
- High-pressure laminate (HPL): a harder laminate sheet bonded to a core.
- Thermofoil: a vinyl wrap over MDF. It is sensitive to heat, and it can peel near ovens and dishwashers.
- Wood veneer: a thin layer of real wood over a core. See can you paint veneer furniture.
Check the edges and the grain. If you are still not sure, ask a cabinet supplier or a local painter to look at it.
If the side is thermofoil and it is lifting, paint will not hold. See how to paint laminate cabinets that are peeling.
What you need
- A degreaser, such as TSP substitute or sugar soap
- Clean cloths and a bucket
- 180 to 220 grit sandpaper or a sanding sponge
- A vacuum and a damp microfiber cloth
- A bonding primer
- Cabinet enamel in the same sheen as the doors
- A fine foam roller and a synthetic brush
- A dust mask
Step by step
- Degrease. Wash the side with TSP substitute or sugar soap. Rinse with clean water and let it dry fully. See how to clean kitchen cabinets before painting.
- Scuff lightly. Use 180 to 220 grit only. The aim is to dull the sheen, not to remove the surface. Do not sand through melamine into the particleboard.
- Remove the dust. Vacuum, then wipe with a damp microfiber cloth. Oil-based tack cloths can leave a residue under water-based paint.
- Prime with a bonding primer. Options include Zinsser B-I-N (shellac), INSL-X Stix, Sherwin-Williams Extreme Bond and Zinsser Cover Stain (oil).
- Let the primer cure. Some waterborne bonding primers take days to reach full adhesion, and some need up to about two weeks. Follow the label.
Regular latex primer does not stick reliably to melamine or laminate.
Check adhesion
Before you topcoat, test a hidden spot. Cut a crosshatch pattern through the primer, press tape firmly over it, then pull it off quickly. If paint lifts, the primer has not bonded and the surface needs more preparation. This follows the approach of the ASTM D3359 tape test.
Paint the side
Apply two thin coats of cabinet enamel in the same sheen as the doors. Work from the top down, using a foam roller on flat panels and keeping a wet edge so each pass blends into the last. Let each coat dry before you recoat.
Repair chips and gaps
- Fill chips with an epoxy wood filler or a two-part filler.
- Sand flush once the filler is dry.
- Prime the repaired area before you topcoat.
Alternatives to painting
If the side is too damaged to paint well, you have other options:
- Skin the side. Fix a 1/4 inch (6 mm) plywood panel, or a matching finished panel, over the side with construction adhesive and brad nails.
- Apply veneer. Iron-on or peel-and-stick wood veneer can work on a sound, smooth surface.
- Apply new laminate. Bond new HPL laminate with contact cement, and press it flat with a J-roller.
Common mistakes
- Using a latex primer. It does not bond reliably to melamine or laminate.
- Sanding heavily. It damages the surface without improving adhesion.
- Painting bubbling thermofoil. Paint will not hold on lifting thermofoil.
- Assuming laminate cannot be painted. It can, with the right primer and enough cure time.
Safety
- Contact cement and shellac primer are flammable. Ventilate the room and keep them away from pilot lights.
- Wear a dust mask when sanding.