18mm Structural OSB 3 Sterling Board 2440mm x 1220mm (8′ x 4′)
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£25.49 Original price was: £25.49.£22.96Current price is: £22.96. ex VAT
The 18mm Structural OSB 3 Sterling Board is a highly durable and moisture-resistant panel designed for a wide range of internal and external applications, including roofs, floors, and walls.
- Versatile Structural Applications
- Moisture Resistance
- FSC/PEFC Certified
- Renovation and New Projects
- Superior Strength
- Manufactured to EN 300 Performance Standards
- BBA Approved
EXCELLENT
Based on 1390 reviews
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Ciaran “Reaper616” FordTrustindex verifies that the original source of the review is Google.
Great retailer. Got my insulation for my home projects way cheaper than others and delivery was great and as planned. Lee was great. Highly recommended.Posted on Google![]()
Caroline WilliamsTrustindex verifies that the original source of the review is Google.
Excellent service. My order as delivered promptly and the delivery guy was very helpful.Posted on Google![]()
Leanne JoelTrustindex verifies that the original source of the review is Google.
I ordered 18 of the 40mm Soprema PIR Insulation Boards (1200 x 2400mm), and I couldn’t be happier with the service. Delivery was super fast, and everything was delivered with great care. The online ordering process was easy and straightforward, and the communication afterwards was absolutely fantastic. I honestly cannot fault anything. Excellent service, great communication and a smooth, hassle-free experience from beginning to end. Highly recommended! I would definitely order from them again.Posted on Google![]()
Ivan GeorgievTrustindex verifies that the original source of the review is Google.
I've ordered the insulation got it next week spot on delivery great servicePosted on Google![]()
Mark EptonTrustindex verifies that the original source of the review is Google.
Great service used a few times now and always great service and quality products will be using again and definitely will recommendPosted on Google![]()
Andy FisherTrustindex verifies that the original source of the review is Google.
Outstanding service from Trade Insulations. Ordered Rockwool slabs for a floor/ceiling project, and the delivery was bang on schedule. The insulation density is so impressive I’m tempted to line my entire life with it. James messaged to check in on the delivery, proving they care as much about customer satisfaction as they do about acoustic decibel reduction. Absolute legends. Don't bother looking anywhere elsePosted on Google![]()
Lucas BouvierTrustindex verifies that the original source of the review is Google.
Quick shipping and good productPosted on Google![]()
puppy jack russell sebasTrustindex verifies that the original source of the review is Google.
Really good prices and fast deliveryPosted on Google![]()
Ben FarrowTrustindex verifies that the original source of the review is Google.
Phoebe was super helpful, will definitely use again.
Experience efficiency and reliability with the 18mm OSB 3
A versatile panel designed for a multitude of construction applications. This engineered sheet material is composed of multi-layered softwood flakes strategically oriented and hot-pressed, resulting in a durable and adaptable panel.
18mm OSB Board Applications
The unique composition of the OSB, with varying thicknesses and wood species, has earned it the reputation of being the “Swiss Army Knife” of the construction industry. This mish-mash composition contributes to its strength and durability, making it an excellent alternative to plywood. It finds wide-ranging uses in shelving, sheds, display boards, and other domestic applications. Additionally, it proves beneficial in commercial projects such as subfloors and roof decking.
Key Features of the 18mm OSB 3 Sterling Board:
- Moisture Resistance: The OSB 3 is a moisture-resistant panel, making it suitable for both internal and external applications, including roofs, floors, and walls.
- Structural Integrity: The OSB excels in load-bearing and structural applications, making it ideal for wall sheathing, roofing, and flooring. Its durability also makes it a reliable choice for long-term site hoardings.
- Versatility: The 18mm OSB 3 is highly versatile, serving both heavyweight load-bearing construction purposes and domestic decorative applications.
- Easy Installation: Installing OSB boards is hassle-free, as they are easy to drill, nail, file, and sand. They do not require complex equipment or fittings for installation.
- Compliance and Approval: Our structural OSB boards meet the EN 300 performance standards and are BBA approved, ensuring their quality and performance. They also carry FSC/PEFC chain of custody certification, reflecting responsible sourcing.
- Dimensional Consistency: The standard boards come in consistent dimensions of 2440 x 1220 (8ft x 4ft), providing ease and convenience during construction.
Using OSB Boards in Humid Conditions:
While OSB2 boards are suitable for dry conditions, the OSB3 boards excel in more challenging environments, including humid conditions. It is essential to note that OSB boards are not completely waterproof. Therefore, if planning to use them for permanent outdoor applications, it is advisable to add further weather protection.
To enhance weather resistance, apply weather-proof exterior paint to the boards. Follow this with a wood waterproofing sealant, allowing sufficient drying time of 12-14 hours before installation. A second coat can be added if necessary.

























tom –
The OSB boards we had ordered stayed flat once wed installed and the 8’4 sheet size was perfect for us
Hamza –
great sheet material and consistent quality
Kian –
boards in great condition even though a day late was worth it
Sanjay Patel –
consistent quality boards cut cleanly
harvey daniels –
great for our outdoor project and easy to work with
Elliot –
great boards easy to fit and no damages to the edges which is always a bonus
Joseph –
I’ve used OSB 3 boards from multiple suppliers, but this batch from Trade Timber is by far the best. No defects, clean cuts, and easy to work with. A bit more expensive, but worth the investment
James –
Trade Timber offers the cheapest price around , very happy with the service and with the value for money