SterlingOSB Zero Tongue & Groove is a high-performance structural board designed for flooring and flat roof decking. With a precision-engineered profile and smooth, knot-free surface, it delivers consistent quality across every board. Manufactured in the UK and suitable for humid conditions, it's trusted by housebuilders and contractors for its strength, reliability, and ease of use.
Whether you're laying platform floors or decking out pitched roofs, this board offers a secure fit, reduced waste, and dependable performance - even when the weather turns.
Important note: When using OSB externally, it's crucial to seal all edges and faces with an appropriate sealant. This simple step ensures maximum protection and performance against the elements.
Features & Benefits
- Tongue & Groove Edge Profile: Engineered for a tight, secure fit that speeds up installation and improves load distribution
- Zero Added Formaldehyde: Offers improved environmental consistency and safer indoor air quality
- Smooth, Knot-Free Surface: No sanding required - ideal for GRP roofing and decorative finishes
- Moisture Resistant (OSB/3 Rated): Performs reliably in humid environments, including kitchens, bathrooms, and roof spaces
- Precision Machined Panels: Uniform boards with no voids or delamination issues - reduces waste and improves finish
- Strong and Load-Bearing: Tough enough for structural flooring and roof decking in residential and commercial builds
- Recognised by NHBC Technical Standards: Trusted for housing applications and backed by third-party approvals
- Made in the UK: Locally sourced and manufactured, helping reduce carbon miles and support sustainable building practices
- Certified Performance: BBA, CE, and UKTFA Q-Mark approved for quality and reliability in modern construction
Technical Specifications
| type | OSB Tongue & Groove |
| unit | each |
| grade | OSB/3 |
| width | 590 mm |
| colour | Light Brown |
| length | 2400 mm |
| coverage | 1.42m2 |
| material | OSB |
| thickness | 18 mm |
| brand name | West Fraser |
| structural | Yes - EN 300 OSB/3 rated for load-bearing use |
| application | Flooring, flat/pitched roofs |
| edge detail | Tongue & Groove on 4 Sides (TG4) |
| country origin | UK |
| certifications met | BBA, CE, UKTFA Q-Mark, EN 300 (OSB/3), EN 13501-1 (D-s2,d0) |
| moisture resistant | Yes - suitable for humid conditions (OSB/3 classification) |
| manufacturer model no | 18024000590I3N4 |
| interior or exterior use | Both - sealing required for exterior applications |
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