Shuttering Plywood Class 3
Price range: £18.00 through £26.00Class 3 shuttering plywood used for concrete formwork and temporary construction applications where moisture resistance and structural stability are required.
High-performance structural and decorative sheet materials for construction, agricultural, and DIY projects.
Sheet Materials Products

Class 3 shuttering plywood used for concrete formwork and temporary construction applications where moisture resistance and structural stability are required.


General purpose OSB 3 board is a versatile, low-cost structural building board suitable for load-bearing applications in dry and humid conditions.


18mm tongue and groove OSB panels used for flooring and structural boarding where interlocking edges and stable sheet fixing are required.


Buffalo board is a heavy-duty phenolic-faced plywood used for trailer floors, vehicle bodies, and industrial flooring where strength, durability, and slip resistance are required.
Sheet materials are essential for providing large-scale coverage, structural stability, and smooth finishes in modern building projects. At Ryedale Timber, we stock a comprehensive range of engineered wood panels, including OSB3, structural plywood, and specialist trailer boarding. Every sheet is sourced to meet UKCA and CE marking standards, ensuring compliance with Building Regulations for permanent construction.
Timber sheet materials (also known as wood-based panels) are engineered products manufactured by bonding wood veneers, strands, or fibres with adhesive under high pressure. This process creates stable, versatile sheets that do not warp or shrink like solid timber.
Our range is categorised by performance and intended use case:
OSB3 (Oriented Strand Board): The industry standard for structural use in humid conditions. OSB3 is stronger and more moisture-resistant than standard chipboard. Use it for roof sarking, wall sheathing, and flooring. We stock both square-edge and tongue-and-groove 18mm OSB.
Shuttering Plywood: A cost-effective Class 3 plywood used primarily for concrete formwork and temporary hoarding. While robust, it is not decorative and should be treated if used in permanent exterior applications.
Buffalo Board (Phenolic Plywood): A heavy-duty, anti-slip plywood coated with a hard-wearing phenolic film. Essential for trailer flooring, horseboxes, and high-traffic loading ramps.
For professional trades and building control compliance, our sheet materials meet the following technical standards:
BS EN 13986: The overarching standard for wood-based panels used in construction.
EN 300 (OSB): Our OSB/3 meets these requirements for load-bearing boards in humid environments.
EN 636 (Plywood): We supply plywood graded for specific exposure levels (Class 1 dry, Class 2 humid, Class 3 exterior).
For structural applications, OSB3 is almost always the superior choice over standard chipboard.
| Feature | OSB3 Board | P5 Chipboard |
|---|---|---|
| Structural Strength | High (Engineered strands) | Moderate (Wood particles) |
| Moisture Resistance | Excellent (Humid use) | Good (Moisture resistant) |
| Primary Use | Roofing, wall sheathing, flooring | Internal flooring, shelving |
| Weight | Lighter & easier to handle | Denser & heavier |
Note: While OSB3 is stronger, P5 Chipboard provides a smoother surface for floor finishes.
To ensure structural integrity and safety, please adhere to these professional guidelines:
Do not use OSB2 for structural roofing: Only OSB/3 or higher is graded for load-bearing use in humid conditions. Using lower grades can lead to catastrophic structural failure if exposed to moisture during the build.
Avoid unsealed edges: Even moisture-resistant boards like Phenolic Plywood or OSB3 will absorb water through cut edges. All cut edges must be sealed with a suitable wood preservative or edge-sealant to prevent delamination.
Formaldehyde Emissions: All our boards meet E1 standards, ensuring safe indoor air quality and compliance with health and safety regulations.
Certified Sourcing: We supply FSC and PEFC-certified sheet materials, ensuring your timber is sourced from responsibly managed forests.
Yard Management: Unlike generic retailers, we store our sheet materials flat and undercover at our yard in Pickering to prevent warping, moisture intake, and damage to corners.
Ryedale Timber is the leading supplier of structural sheet materials in North Yorkshire. We manage our own stock in Pickering to ensure every sheet of OSB, Plywood, and Buffalo Board is delivered in pristine condition.
We provide a dedicated delivery service for trade and DIY customers across North Yorkshire and East Yorkshire. Our local fleet offers fixed-price delivery to York, Scarborough, Malton, and Thirsk. We also support large-scale agricultural and coastal projects in Driffield, Bridlington, Whitby, and Filey.
For rural builders and farm maintenance, we offer reliable delivery to Helmsley, Kirkbymoorside, Easingwold, Pocklington, Guisborough, and Robin Hood’s Bay.
We deliver our full range of sheet materials to the following areas. Deliveries typically take 3–5 working days.
| Delivery Area | Postcodes Covered | Flat Rate | Minimum Spend |
|---|---|---|---|
| Pickering | YO18 | £5.00 | £50 |
| Malton | YO17 | £10.00 | £100 |
| Scarborough | YO11, YO12, YO13 | £10.00 | £100 |
| Filey | YO14 | £12.00 | £100 |
| Helmsley | YO62 | £15.00 | £150 |
| Kirkbymoorside | YO62 | £15.00 | £150 |
| Bridlington | YO15, YO16 | £15.00 | £200 |
| Whitby | YO21 | £20.00 | £200 |
| Robin Hood’s Bay | YO22 | £20.00 | £200 |
| Driffield | YO25 | £30.00 | £300 |
| York | YO1, YO10, YO19, YO23, YO24, YO26, YO30, YO31, YO32, YO43, YO44, YO51, YO60 | £30.00 | £300 |
| Easingwold | YO61 | £30.00 | £300 |
| Thirsk | YO7 | £35.00 | £300 |
| Pocklington | YO41, YO42 | £35.00 | £350 |
| Guisborough | TS14 | £40.00 | £500 |
Timber sheeting, often referred to as wood-based panels or sheet materials, is an engineered product made by bonding wood particles, fibres, or veneers together. These products are designed to provide large, flat, and dimensionally stable surfaces that are more efficient and consistent than solid wood planks. They are the backbone of modern construction for flooring, roofing, and wall sheathing.
The most common types include Plywood (layered veneers), OSB (compressed wood strands), MDF (fine wood fibres), and Chipboard (compressed wood chips). Specialist variants like Buffalo Board (phenolic-coated plywood) are used for heavy-duty industrial applications such as trailer boarding, while Hardboard is used for thin backing panels and floor underlay.
For permanent exterior applications, Marine Plywood or Class 3 (Exterior) Plywood are the most reliable options due to their high-quality veneers and water-resistant glues. For structural elements like roofing or sheds, OSB3 is the industry standard for humid or semi-exposed conditions. Regardless of the board type, all exterior sheet materials must be properly sealed on their edges and faces to prevent moisture ingress.
OSB3 is significantly stronger than chipboard for structural applications. Because OSB is made from long, oriented strands of wood, it has superior load-bearing capacity and shear strength. While chipboard is suitable for furniture and internal dry flooring (like P5 grade), OSB3 is the required standard for structural roofing, wall sheathing, and heavy-duty sub-floors.
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