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18mm OSB3 Tongue & Groove Flooring Board 2400mm x 625mm TG4

SKU: OSBTG18
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£13.01 Ex VAT
£15.61 Inc VAT
£8.67 / m2
£10.40 / m2

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Specifications

Thickness: 18mm

Dimensions: 2400mm x 625mm

Length: 2400mm

Width: 625mm

Material: OSB3

Structural: Yes

Lumber/Wood type: OSB

Moisture Resistance: Yes - suitable for humid conditions

Certifications: CE, EN 300 (OSB/3), EN 13501-1 (D-s2,d0)

Description

OSB3 Grade for structural use Tongued and grooved on all four sides - Ideal for flooring and roofing applications.

  • 18mm x 2400mm x 625mm.
  • For structural use in accordance with EN13986.
  • Tongued and grooved on 4 edges.
  • Versatile panel which is easy to saw, drill, nail, plane and sand.
  • The panel is manufactured to EN300 and meets E1 low emissions regulations.

These tongued and grooved boards feature a moisture-resistant design, making them ideal for load-bearing applications such as flooring, roofing, and wall sheathing in both residential and commercial projects. Crafted from high-quality oriented strands for enhanced strength and stability, they offer easy interlocking installation, reducing labour time and ensuring a seamless fit.

Frequently asked questions
What does "TG4" mean for these boards?

TG4 stands for Tongue & Groove on all four sides. This allows the boards to slot together seamlessly on both the long and short edges, creating a tight, continuous surface that significantly increases the structural integrity of the floor compared to square-edged boards.

When should I choose Tongue & Groove (T&G) OSB?

You should opt for T&G edges if you are installing flooring or flat roof decking. The interlocking edges allow the boards to slot together tightly, distributing weight evenly across the joints and eliminating the need for noggings (extra support timber) under every single edge, which saves time and material.

Why is the board width 625mm instead of the standard 1220mm?

This "handy" width is specifically designed for easier handling and installation in tight spaces like lofts or upstairs rooms. The 625mm width is much easier to move through joists and doorways while still being wide enough to cover a large area quickly.

Can these boards be used as a flat roof deck?

Yes, absolutely. Because these are OSB3 (Moisture Resistant) and T&G, they are the industry standard for flat roof decking. The interlocking edges provide a flat, stable base for felt, EPDM rubber, or GRP fiberglass systems, and the OSB3 rating ensures they can handle the humidity levels found in roofing applications.

Need a specific size?

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Why The Good Sheet?

  • Extensive Stock: We hold a vast inventory of sheets in various colours, finishes, and sizes.
  • Quick Delivery: We can deliver what you need quickly and efficiently.
  • Unmatched Quality: You’re investing in the best - sheets that offer superior quality and durability.
  • Precision Cutting: Our advanced cutting technology ensures accurate and repeatable cuts with a tolerance of +/- 1-2mm
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