Looking to buy OSB boards? Houthandel Jan Sok in Meppel stocks OSB in two sizes: 9 mm at 1.22 × 2.44 m and 18 mm at 0.61 × 2.44 m. The 18 mm board is a half sheet, which makes it easier to carry and handle on site. Order online, collect at Celsius 10 or have the boards delivered anywhere in the Netherlands.
Which OSB board do I need?
| Board | Size | Typical use |
|---|---|---|
| OSB 9 mm | 1.22 × 2.44 m | Wall sheathing, ceilings and roof boarding with enough support |
| OSB 18 mm | 0.61 × 2.44 m (half sheet) | Floors and structural work, if the joist spacing is right |
Do not choose on thickness alone: the joist spacing, the span, the expected load and the support along the edges together decide whether a board is suitable.
OSB and underlayment prices
| Board | Thickness and size | Price per sheet |
|---|---|---|
| OSB | 9 mm, 1.22 × 2.44 m | € 20.50 |
| OSB | 18 mm, 0.61 × 2.44 m | € 18.80 |
| Underlayment | 9 mm, 1.22 × 2.44 m | € 22.00 |
| Underlayment | 18 mm, 1.22 × 2.44 m | € 39.95 |
Prices as of 2 November 2026, per piece, including 21% Dutch VAT. The product page always shows the current price and stock. We often use 18 mm underlayment as the base for EPDM on a shed roof, and in our Meppel shop we can also cut boards to size.
Is OSB waterproof?
OSB/3 is bonded to resist moisture, but no OSB board is fully waterproof. A shower during the build is usually fine, whereas constant moisture will damage the board over time. Protect the surface, seal every cut edge and, for work that stays wet, choose film-faced plywood instead.
Honest product details
We do not always sell sheet material under a fixed brand, because the manufacturer can change from batch to batch. Compare the EN 300 class, thickness, size and flatness instead, and always check your joist spacing. We do not keep 12, 15 or 22 mm OSB in stock, so please contact us if your project needs one of those thicknesses.
Delivery and collection
Collect your boards at our yard in Meppel during opening hours, or have them delivered to your address anywhere in the Netherlands. Parcel delivery costs € 12.50 and a scheduled truck delivery costs € 125 including VAT. Delivery within the Netherlands is free for orders from € 2,500, with the exception of the Wadden Islands.
Frequently asked questions
Where can I buy 18 mm OSB in the Netherlands?
Houthandel Jan Sok in Meppel sells 18 mm OSB as a half sheet of 0.61 × 2.44 m. You can order online, collect it at Celsius 10 or have it delivered across the Netherlands, but please check the current stock on the product page before you order.
Which OSB thickness do I need for a floor?
18 mm is the stock size for floors and structural work, but the right thickness still depends on the joist spacing, the load and the building regulations that apply. For load-bearing floors, ask a structural engineer to check your design.
Which OSB brand is reliable?
At Jan Sok the manufacturer can change from batch to batch, so the EN 300 class, thickness, size and technical product details are a more reliable basis for comparison than a brand name alone.
View OSB in 9 and 18 mm or ask for advice.