The failure pattern on cabinets painted without sanding
Factory cabinet finishes are designed to shrug off stains and wipe clean. That slick surface shrugs off new paint too. Benjamin Moore states in its cabinet instructions that most cabinet finishes are too smooth or glossy to reprime and repaint unless they are roughed up first.
With the sanding skipped, damage usually arrives in this sequence:
- Scratches down to the old colour. A ring, a fingernail, or a pot handle peels the new coat away and exposes the original finish.
- Chipped door edges and drawer fronts. Edges catch knees, chair backs, and vacuum heads, so a weak bond fails there first.
- Worn patches at the pulls. Skin oils and constant touching wear through paint that never locked on.
- Sheets of peeling paint. Once one edge lets go, long strips can follow, sometimes pulled off by a piece of tape or a sticky note.
- Early trouble by the range and dishwasher. These doors take the most heat, steam, and grease, so they often fail before the rest.
Cabinets that were sanded but never degreased show the same symptoms. Grease removal and abrasion both count, which is why professional painting prep begins with TSP degreasing before any sandpaper touches a door.
Painting cabinets without sanding: limits of no-sand products
Liquid deglossers and bonding primers are marketed as a way to reduce sanding. They help in the right conditions, and they carry conditions.
- The label beats the product name. The prep instructions printed on the can decide which surfaces it bonds to. Many still require a clean, dull surface and a light scuff.
- Grease always has to go. No primer on the shelf bonds to cooking grease.
- Slick laminate and melamine surfaces. On these, a bonding primer is a requirement rather than a shortcut.
- Lifting thermofoil needs another route. Thermofoil fronts that bubble, peel, or yellow beside stoves and dishwashers are usually refaced, because paint cannot pin down a skin that is already separating. New doors through cabinet refacing handle that case.
Do you have to prime cabinets if you sand them?
Primer remains necessary on sanded cabinets, because sanding and priming do separate work. Sanding makes texture. Primer attaches to that texture, seals the surface, and evens out the base for paint, which counts most on bare wood spots, filled dents, and dark colours going light.
The Benjamin Moore method sands, primes with Fresh Start High-Hiding All-Purpose Primer, then sands lightly with 220 grit ahead of the first coat. That page also cautions that a lacquer-based primer can interfere with how Advance adheres. Primer and topcoat must suit each other, so read both labels before buying either one.