18mm OSB3 TG4 Sterling Board Tongue & Groove 2400×600 Structural Flooring Board for Subfloor & Construction

The Sterling OSB Zero T&G OSB3 TG4 Board 2400 x 625 x 18mm from West Fraser is a high-quality, hard-wearing structural OSB3 panel designed for load-bearing applications and demanding site conditions.

The tongue & groove (TG4) edge profile makes it ideal for platform floors, helping create a tighter, more stable fit across joints. This board performs well in humid conditions, making it a dependable choice for house building, construction, flooring and roof decking applications.

Sterling OSB Zero is precision engineered to deliver consistent performance with a clean, uniform build. West Fraser state that SterlingOSB Zero contains zero added formaldehyde, and that their products are net carbon negative (more CO₂e locked into the product than emitted during manufacture).

Benefits & Features (bullet list)

OSB3 structural grade – suitable for load-bearing use

TG4 Tongue & Groove edges – ideal for platform floors and strong jointing

Performs well in humid conditions – built for real site environments

Zero added formaldehyde (SterlingOSB Zero)

FSC® certified – responsibly sourced timber

BBA Approved and recognised by NHBC Technical Standards for housing applications (as stated for this product range)

Typical Uses

Structural flooring / platform floors

Roof decking

General construction and house building

Load-bearing sheathing where OSB3 is specified

Specifications (add to “Additional Information”)

Brand / Manufacturer: West Fraser (SterlingOSB)

Product Type: OSB3 TG4 Tongue & Groove Board

Size: 2400mm x 625mm

Thickness: 18mm

Certification: FSC®

Suggested Attributes (WooCommerce):

Thickness: 18mm

Length: 2400mm

Width: 625mm

Edge: TG4 (Tongue & Groove)

Grade: OSB3 Structural

FSC Certified: Yes

Delivery & Collection

Click & Collect: Available from WEL Timber & Building Supplies, Kings Langley (WD4)
Delivery: Delivery available (restrictions may apply). If you need it urgently, call us and we’ll confirm the soonest delivery slot.

Contact: 01923 264880 | sales@welbm.co.uk
| welbm.co.uk

18mm OSB3 TG4 Sterling Board
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