Plywood vs. MDF vs. Particleboard: Interior Sheet Goods Guide
ComparisonA three-way comparison of plywood, MDF, and particleboard for interior applications — cabinets, shelving, furniture, and trim. Covers strength, moisture sensitivity, cost, machinability, and best uses for each material.
Quick Comparison
| Criterion | CDX Plywood | Material 2 | |
|---|---|---|---|
| Material Type | Cross-laminated wood veneers | Wood fiber + resin, hot-pressed | Wood particles + resin, hot-pressed |
| Density (3/4") | ~34 lbs/sheet | ~96 lbs/sheet | ~68 lbs/sheet |
| Screw Holding (face) | Excellent | Good | Fair |
| Screw Holding (edge) | Good | Poor — splits easily | Poor — crumbles |
| Moisture Resistance | Good (exterior grades) | Very poor — swells and disintegrates | Poor — swells permanently |
| Surface Smoothness | Shows grain through paint | Extremely smooth — ideal for paint | Smooth — good for laminate |
| Machinability (CNC/Router) | Good — may chip at veneer edges | Excellent — clean, consistent cuts | Fair — may chip or crumble |
| Cost (3/4" per 4×8 sheet) | $45–75 (hardwood ply) | $35–55 | $22–38 |
| Paint Finish Quality | Good — grain may telegraph | Excellent — smooth, no grain | Good — must be laminated or sealed |
| Structural Strength | Highest — resists bending and shear | Moderate — sags under load over span | Lowest — sags and creeps |
| Best Use | Structural, exposed edges, wet areas | Painted doors, trim, CNC work | Underlayment, core for laminate |
Our Recommendation
When to Choose Each Material
Choose plywood for structural applications (cabinet boxes, shelving with heavy loads, drawer bottoms), any application near moisture, and projects where exposed edges are part of the design. Plywood is the strongest, most versatile, and most moisture-tolerant option.
Choose MDF for painted doors, painted trim, CNC-routed components, and any flat panel that will receive an opaque paint finish. MDF's smooth, grain-free surface produces the best paint results. Keep it away from water.
Choose particleboard when budget is the primary driver and the panel will be covered with laminate, veneer, or another finish material. It is the standard core material for laminate countertops and economy-grade cabinets. Never use it in wet areas.
Detailed Analysis
Overview
Plywood, MDF (medium density fiberboard), and particleboard are the three main sheet goods used in interior construction, cabinetry, and furniture. They all come in 4×8 sheets, they all cut with the same tools, and they all serve as substrates for finished surfaces. But their internal composition creates dramatically different performance characteristics.
Understanding these differences prevents costly mistakes — like using MDF for a bathroom vanity (it will swell and disintegrate) or particleboard for loaded shelving (it will sag permanently).
Plywood
Plywood is made from thin wood veneers peeled from logs and cross-laminated with adhesive. The alternating grain direction gives plywood excellent strength-to-weight ratio, dimensional stability, and resistance to splitting. It is the only one of these three materials that is available in exterior grades suitable for wet environments.
For cabinetry, hardwood plywood (birch, maple, or oak face veneers over a multi-ply core) is the standard choice for cabinet boxes, drawer sides, and backs. Plywood edges can be left exposed and finished, or edge-banded for a cleaner look.
MDF (Medium Density Fiberboard)
MDF is manufactured by breaking down wood into individual fibers, mixing with resin, and pressing into panels under heat. The result is an extremely dense, perfectly smooth panel with no grain, no voids, and consistent density throughout. This makes MDF the ideal substrate for paint finishes and CNC routing.
The fatal flaw of MDF is moisture. When MDF absorbs water — even from high humidity — it swells irreversibly and the fibers separate. Bathroom cabinets, laundry room shelving, and under-sink panels made from MDF are a guaranteed failure. "Moisture-resistant MDF" (green-core MDF) is available but only marginally better — it is NOT waterproof.
Particleboard
Particleboard is the economy option. Made from wood chips, shavings, and sawmill waste bonded with resin under pressure, it is the least expensive sheet good available. It serves as the core material for laminate countertops, economy cabinets (particularly imports), and underlayment.
Particleboard has the weakest structural properties of the three — it sags under sustained load, crumbles when screwed near edges, and swells permanently when wet. It should always be covered with a finish material (laminate, veneer, or paint) and never used in structural or moisture-prone applications.
Key Decision Factors
- Will it get wet? → Plywood only. MDF and particleboard are not options.
- Will it be painted? → MDF produces the best paint finish. Plywood shows grain through paint.
- Will it carry heavy loads? → Plywood. MDF sags over long spans. Particleboard creeps under sustained load.
- Does budget dominate? → Particleboard with laminate is the lowest-cost option for hidden substrates.
- Will edges be visible? → Plywood edges can be finished. MDF edges are rough. Particleboard edges are unusable.