Plywood vs. MDF cabinets comes up in nearly every kitchen remodel, usually right after someone hears that one of them is “cheap.” That isn’t really fair to either. Both are engineered wood panels, both show up in good cabinetry, and which one is better depends mostly on what part you’re building.
Plywood is made of thin wood layers glued together, with the grain of each layer running crosswise to the one below it. That’s what gives it strength and stiffness for its weight. It holds screws well, it’s lighter than MDF, and it tends to recover better if it gets wet for a short time. Those traits are why many cabinetmakers use it for boxes and shelves.
MDF, or medium-density fiberboard, is made from fine wood fibers pressed together with resin. The surface is smooth and has no grain at all, which makes it very good for paint. It’s also stable and doesn’t move much with changes in humidity, so it’s a common choice for painted door panels. On the downside, it’s heavy; it can sag across a long shelf, and it swells if water gets into an unsealed edge.
Plenty of well-made kitchens use both. A plywood box gives the structure, and MDF panels give painted doors a smooth face. Edges need attention either way, since raw MDF soaks up moisture and plywood edges usually get banding or a solid wood strip.
In a humid climate, sealing and finish matter at least as much as the panel itself. A homeowner comparing quotes can simply ask which material is used where, and why. A clear, specific answer is usually a good sign.
In Tampa Bay, The French Refinery builds custom cabinetry and explains material choices during every design.
