OSB 3 Board - TG4 2400mm x 600mm (Tongue & Groove)

Product Overview

The OSB 3 Board – TG4 2400mm x 600mm (18mm) is a durable, high-strength, tongue and groove structural panel designed for use in flooring, roofing, and general construction. Engineered for reliability and ease of installation, this board features a TG4 (tongue and groove on all four sides) profile that ensures a tight, seamless fit between panels — reducing movement, eliminating gaps, and improving overall stability. Manufactured from compressed layers of wood strands bonded with waterproof resin, this 18mm thick OSB 3 board provides excellent load-bearing performance and resistance to moisture, making it ideal for use in humid environments.

Features and Benefits

Precision TG4 Profile – The tongue and groove edges allow for fast, secure installation and a smooth, level surface finish. Moisture-Resistant – Suitable for use in structural applications within humid or damp conditions, such as floors and roofs. High Strength and Stability – The engineered construction ensures consistent density, excellent load distribution, and long-lasting performance. Sustainable Material – Made from responsibly sourced timber, offering an environmentally conscious alternative to traditional plywood. Easy to Work With – Can be sawn, drilled, screwed, or nailed using standard woodworking tools.

Applications

The OSB 3 TG4 18mm board is widely used across both professional and DIY construction projects, including: Flooring and subflooring Loft and attic flooring Roofing decks and sheathing Timber frame construction General structural applications Its robust tongue and groove design ensures stability and strength, even under heavy foot traffic and structural loads.

FAQs

1. What does TG4 mean?

TG4 stands for **Tongue and Groove on all four edges**. This interlocking design helps each board connect securely to the next, creating a tight, stable fit and reducing movement once installed.

2. Can OSB 3 TG4 be used for flooring in humid areas?

Yes. OSB 3 TG4 is specifically engineered for **load-bearing use in humid or damp environments**, making it suitable for floors in kitchens, bathrooms, and loft spaces with proper ventilation.

3. Do I need to leave a gap between boards when fitting?

Because of the **TG4 interlocking design**, the boards naturally maintain the correct spacing when joined. However, it’s recommended to leave a small expansion gap around the perimeter of the room to allow for natural movement.