Vanity units: MDF vs PVC vs wood
Understanding moisture-resistant materials and why PVC units are gaining popularity.
At a glance
Quick Checklist
Key points at a glance
- 1Avoid standard MDF (swells when wet)
- 2PVC waterproof units are becoming popular
- 3Moisture-resistant MDF is adequate for most
- 4Solid wood needs proper sealing
- 5Check waste and supply positions first
Questions to ask your installer
Take these to your next conversation with your fitter
- 1What material do you recommend for my bathroom humidity level?
- 2Is PVC or moisture-resistant MDF better for my situation?
- 3Where are the waste and water supply positions?
- 4Will the unit fit with the door open and toilet access?
- 5Is the wall strong enough to support a wall-hung unit?
- 6Do we need to move any pipes to accommodate this unit?
💡 Tip: A good installer will welcome these questions. If they dismiss them, that's a red flag.
💡Myth vs Reality
Common Myth
"PVC furniture looks cheap and plastic"
The Reality
Modern PVC units come in sophisticated finishes that rival wood and MDF in appearance.
Common Myth
"All bathroom furniture is moisture-resistant"
The Reality
Standard MDF swells and warps in humid bathrooms. Always check for moisture-resistant materials.
Common Myth
"Solid wood is always the best choice"
The Reality
Wood needs regular maintenance in bathrooms. PVC or moisture-resistant MDF is often more practical.
What to look for
- •PVC/waterproof units: 100% moisture-proof, ideal for humid bathrooms
- •Moisture-resistant MDF: treated core resists swelling
- •Solid wood: beautiful but needs regular maintenance
- •Soft-close hinges and quality runners
Common mistakes
- •Buying standard MDF furniture that swells in humid bathrooms
- •Choosing a unit too deep that blocks the room or door
- •Not checking waste pipe position before ordering
- •Forgetting to account for skirting boards when measuring
Quality considerations
- •PVC units are virtually waterproof and resist humidity damage completely
- •Quality PVC has a premium feel, not the cheap plastic look of old
- •18mm carcasses are sturdier than 15mm
- •Soft-close mechanisms should feel smooth and controlled
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This guide is written to help you make informed decisions, not to sell you anything. Always discuss your specific situation with a qualified installer.