Plywood is generally stronger and more durable than MDF, making it better for high-traffic or moisture-prone areas.
Plywood is generally better for kitchen cabinets due to its strength, durability, and resistance to moisture. It consists of multiple layers of wood veneers, giving it superior stability compared to MDF (Medium-Density Fiberboard), which is made from wood fibers and resin.
MDF is comparatively weaker than wood, and, therefore, has a shorter lifespan compared to wood. MDF sheets can crack or split under extreme stress. MDF absorbs water more quickly than wood. MDF contains VOC (volatile organic compounds), containing urea formaldehyde, that can cause irritation to the lungs and eyes.
Many high-end kitchen manufacturers frequently employ MDF in some applications. MDF has advanced significantly, it no longer warps because it is more dimensionally stable. Since there are several quality levels, MDF is no longer synonymous with low-priced, do-it-yourself kitchen cabinets.
It is vital to ensure you keep your MDF cabinets dry. If exposed to a pronounced amount of liquid or moisture, they could become soggy and begin to disintegrate. At Deslaurier, our MDF comes with a 20 year warranty. But, if cabinets are properly maintained there is no reason they shouldn't last over 25 years.
Offering a sturdy level of thickness, 18mm MDF boards will commonly be used within furniture construction, such as cabinets and shelving.
Which cabinet materials offer the best longevity? Solid wood cabinets, particularly oak and hickory, are highly durable and resist wear, dents, and moisture. Plywood and medium-density fiberboard (MDF) also provide good long-term performance at a more affordable price point.
MDF's softness means that it is likely to sag when used for shelves that will bear heavy weights, so it's best to only use this wood composite for shelves that will not hold heavy things. Plywood is undeniably the best choice for shelves that will hold many books or other heavy items.
Common uses for MDF include kitchen cabinets and furniture such as dressing tables and wardrobes. To answer the question of whether you can paint MDF, the answer is simple, yes you can paint MDF.
Here's what you should know:
MDF and moisture do not get along. If not sealed in a humid environment, it will warp and swell. Most MDF contains urea-formaldehyde, a suspected carcinogen, and other Volatile Organic Chemicals (VOCs).
Moisture and Water Damage:
Plywood is a composite wood material made up of thin layers of wood veneer glued with the core materials together. Over time, moisture can cause the core layers to peel apart, and the cabinets can become warped or uneven.
Affordability and Cost-effectiveness: One of the key advantages of adopting MDF for cabinets is its pricing. MDF is budget-friendly compared to wood or other cabinet material.
Maintenance. MDF cabinets are more susceptible to damage, and their smooth surfaces show scratches prominently. Worst of all, it is difficult to repair MDF doors because of their uniform composition. You would need to fill, sand, and paint the damaged area to make it completely disappear.
Oak is the one of the strongest hardwood you can purchase for cabinetry. The grain of oak wood is defined enough to be seen through a stain and white oak is a great choice for modern kitchens and cabinetry projects.
Characteristics of Plywood:
Resistant to water damage; won't soak up as much water nor swell and warp as easily as MDF. Perfect for minimal staining as a finish. Holds screws tightly. High-quality thick plywood is a good material for subflooring and walls; it can be laminated, veneered, lacquered or micro-cemented.
MDF sealer
If you must seal against high humididity conditions use a penetrating epoxy or a penetrating two part urethane. They aren't cheap but they will seal it. They will also provide a really tough surface.
You can use both oil-based and water-based paints for painting the surface of MDF. But oil-based paints are preferred for painting MDF boards as they offer high durability. Water-based paints are recommended for small DIY projects while oil-based paints can be used for large residential and commercial purposes.
One common issue with MDF is that it can crack or split when subjected to extreme stress. For example, if too much weight is placed on the MDF panelling board, or if the panel is damaged, it can break more easily than solid wood. This is why it's crucial to use high-quality MDF and ensure proper installation.
Overall, plywood is more durable and moisture-resistant, making it suitable for high-traffic areas or spaces prone to moisture exposure. However, MDF can provide a smoother surface finish and is more affordable, making it an excellent choice for budget-friendly projects.
I would use 18 or 22, no need to go higher than that for doors or sides. If you are putting heavy items on shelves then you may want them a bit thicker.
While several varieties of wood may be affordable, softwoods emerge as the most inexpensive choice, particularly types like pine, spruce, and fir.