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18mm OSB 3 Tongue & Groove Flooring Board 2400mm x 590mm (8' x 2')

URN: 4003005
Core
£10.95ex. VAT £7.71 per m2
£10.95ex. VAT
£7.71 per m2
Coverage required
m
m
Based on your total area of m2 (inc. 10% wastage) - of these are required (actual coverage of m2)

We recommend purchasing at least 10% extra product to allow for errors, damages or obstacles

18mm OSB 3 Tongue & Groove Flooring Board is a premium roofing and flooring panel specified for load-bearing applications as well as sheathing materials on walls, floors and ceilings.

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Product Overview

18mm OSB 3 Tongue & Groove Flooring Board is a premium roofing and flooring panel specified for load-bearing applications as well as sheathing materials on walls, floors and ceilings.

URN: 4003005
£10.95ex. VAT

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1 to 2 £35 ex. VAT
3 to 4 £45 ex. VAT
5+ £60 ex. VAT

* Deliveries of Doors and Panels to Scotland may incur additional costs and may have an extended delivery time of an additional 3 working days. Delivery to the postcodes below will be charged an additional delivery fee. Our customer service team will reach out to you if you order requires an additional delivery charge. This will be calculated based on the difference between the standard cost charged and the total cost outlined below:

Postcodes: KA1-29, IV1-39, AB, PH1-41, DD, PA1-19, KY, FK, FK15-21 - £90 ex VAT (total delivery cost)
Postcodes: KW 1-14 - £120 ex VAT (total delivery cost)
Highlands and Islands: £280 ex VAT (total delivery cost)

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Express Delivery - Insulation and Plasterboard & Drylining
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Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 ex. VAT £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

This charge is based on delivery to mainland UK excluding the Scottish Highlands. If your delivery address is in the Scottish Highlands a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.

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Returns

We offer a 30 day returns policy on any faulty products.

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Key Features

  • {{foundation}} Use in a variety of structural applications
  • {{water_drop}} Versatile and moisture resistant
  • {{construction}} Used extensively in renovation work and new projects
  • {{keyboard_arrow_right}} Stronger than chipboard products and non-structural plywoods
  • {{workspace_premium}} The boards are manufactured to EN 300 performance standards
  • {{verified_user}} BBA approved

Technical Specification

Technical Specification
Bond Class:BS EN300
Thickness:18mm
Width:590mm
Length:2400mm
Sales Unit:Sheet
Sales Unit Coverage:1.42m2
Weight:15.28kg
Application:Floors & roofs
Edge:Tongue & Groove
Country of Origin:Latvia
Grade:OSB3
Wood Species:Pine / Spruce
Formaldehyde Level:E1 (low)

Colour and finish are representative only and may vary slightly as this is a natural product.

What Is 18mm OSB3 Tongue and Groove? 

Engineered for demanding environments, 18mm OSB3 Tongue and Groove (T&G) offers exceptional durability and performance compared to traditional interior laminate sheets.

Crafted to excel in humid conditions, this versatile wood sheet material, also known as sterling board, is composed of oriented strands compressed with adhesives, resulting in superior load-bearing capabilities.

OSB T&G 18mm exhibits performance characteristics similar to those of softwood plywood building materials, including comparable flexibility and strength. 

A notable attribute of OSB T&G 18mm is its durable tongue and groove profile. Precision-engineered edges allow the boards to interlock seamlessly, ensuring a perfect alignment with adjacent panels. This design feature renders 18mm OSB T&G particularly suitable for use in platform floors, load-bearing roofs, flooring, wall applications, and ceilings.

Furthermore, the inherent water resistance of 18mm OSB T&G makes it an excellent choice for use in areas prone to humidity.


Where Is 18mm OSB3 Tongue and Groove Flooring Board Used? 

  • Wall sheathing
  • Roofing and flooring applications
  • Signboards
  • Furniture and concealment applications


18mm OSB3 Tongue and Groove Flooring Board Benefits

  • Relatively easily sealed against the elements - suitable for interior or exterior structural applications
  • Precision engineered tongued and grooved board
  • Edges machined to the finest tolerance for a snug and secure fit
  • A reliable structural panel for house building and structural roofing
  • Suitable for humid conditions - (Service Class 1 & 2)
  • Superb load-bearing properties
  • Durable building board
  • BBA approved
  • Standard finished thickness of 18mm
  • Cost-effective alternative to plywood


OSB T&G 18mm - Tongue & Groove Explained

OSB T&G 18mm boards comprise a ‘tongue’ edge with a precisely engineered gap ‘groove’. 

When installing the boards, this tongue edge slots perfectly into the groove, streamlining the installation process. 

For additional security, the boards can also be glued or bound with screws or nails ( a method often referred to as ‘secret nailing’).


18mm OSB3 Tongue and Groove - Moisture Resistance 

OSB3 (Oriented Strand Board) showcases exceptional resistance to moisture and humidity, owing to its manufacturing process incorporating resin binders and wax.

Strips and flakes of wood are layered with an adhesive resin and then hot-pressed into a panel. This strength lends itself to OSB3's performative superiority over its sister board OSB2. 

While Class 2 OSB can only be used for non-load-bearing applications in dry conditions, 18mm OSB3 can be used for structural, load-bearing uses in humid conditions in housing applications. The boards are edge-coated with a proprietary water-resistant sealer to lessen the chances of edge swelling.

Despite this being the case, it is always a good idea to add further weather protection if you are planning to use it for permanent outdoor use.

You can do this by adding weather-proof exterior paint. Follow the exterior paint with a wood waterproofing sealant. Allow 12-14 hours for it to dry before installing it - you can add a second coat if required.

Customer Reviews

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5/5 based on 6 reviews

These were used in a roofing project. Really happy the boards and the whole buying experience.

Jack H on

Boards were all in good nick, thanks

Pete Hall on

Delivered to my site on time. 5 star service.

Kris W on

The boards were really easy to install and fit together

Gary T on

The customer team were so friendly and made sure I got it delivered when I needed them

Kate Butler on

Great price and easy to lay.

Martin Chivers on

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