Which Board is Right for Your Project? MDF vs OSB vs Plywood
When it comes to choosing the right sheet material for your job, it’s easy to get overwhelmed by options. MDF, OSB, and Plywood are three of the most commonly used boards in construction, joinery, and DIY — but each one has its own strengths, uses, and price point.
In this guide, we’ll break down the differences between MDF, OSB and Plywood to help you decide which board is best for your project. And as always, if you need a bit of guidance, the team at Wood Green Timber is just a phone call or visit away.
What’s the Difference Between MDF, OSB and Plywood?
| Feature | MDF | OSB | Plywood |
|---|---|---|---|
| Material | Fine wood fibres + resin | Wood strands + adhesive | Thin wood veneers glued together |
| Finish | Smooth, paint-ready | Rougher texture | Grainy, natural wood finish |
| Strength | Good for furniture & fixings | Strong and stable | Strongest overall |
| Moisture Resistance | Available in MR grade | OSB3 = moisture-resistant | Marine ply = high moisture resistance |
| Best Use | Interior joinery, furniture, panelling | Roofing, flooring, sitework | Structural work, joinery, external use |
| Cost | Affordable | Budget-friendly | Generally higher priced |
When to Use MDF
MDF is your go-to if you’re working on anything indoors where a smooth, clean finish matters:
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Shelving, wardrobes, cupboards
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Wall panelling and boxing in
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Furniture making and shopfitting
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Decorative trims and detailing
It machines easily, paints well, and gives a consistent, knot-free surface. Just avoid using it where it could get damp — or go for moisture-resistant MDF if needed.
When to Use OSB
OSB is a great option when you need strength and value, especially in construction and structural work:
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Roof decking and subfloors
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Timber frame wall sheathing
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Shed bases and site hoarding
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Temporary builds and formwork
Choose OSB3 for moisture resistance, and tongue & groove for tight, interlocking joints (especially useful with GRP roofs).
When to Use Plywood
Plywood is the most versatile of the three and comes in many grades and finishes. Use it when you need a strong, reliable board for:
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Flooring and roof decking
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Boxing in, partitions, wall linings
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Furniture and joinery
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External jobs (use marine plywood or seal properly)
Hardwood plywood offers a cleaner finish, while birch ply gives a premium look for furniture and CNC work.
Still Not Sure? Ask the Experts at Wood Green Timber
We’ve been helping customers choose the right sheet materials since 1981. Whether you’re building a roof, panelling a wall, or making bespoke furniture, we’ve got the stock, advice, and cut-to-size service to make the job easier.
Why Buy From Us?
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All three boards in stock (plus more!)
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Huge range of thicknesses and sizes
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Cut-to-size available on all sheet materials
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Next-day delivery across North London and Hertfordshire
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Friendly, experienced staff who actually know what they’re talking about
Get Your Project Moving
Ready to order? Visit us at Wood Green or Potters Bar, or give us a call to chat through your job. We’ll help you pick the right board — and get it to you, fast.
Click & Collect or Local Delivery – same or next day available.
