OSB Board
Choose durable and versatile OSB boards from JJ Building Materials for your next building or renovation project. Ideal for structural and general-purpose use, OSB (Oriented Strand Board) is a cost-effective alternative to plywood that offers exceptional strength, stability and performance. Whether you’re working on flooring, roofing or wall sheathing, our OSB boards provide long-lasting reliability across residential and commercial projects.
OSB3 Boards for Structural Applications
Our OSB3 range is specifically designed for load-bearing and structural work in humid conditions. Manufactured to meet BS EN 300 standards, OSB3 boards combine moisture resistance with high mechanical strength, making them ideal for roofing decks, wall sheathing and flooring systems. They’re easy to cut, fit and fix — providing consistent quality and dependable performance on site.
18 mm OSB for Flooring and Roofing
The popular 18 mm OSB board thickness is perfect for flooring, roofing, and general construction applications. It delivers the rigidity and durability needed for stable, high-performance surfaces while remaining lightweight and easy to handle. 18 mm OSB is suitable for use with joists, subfloors and decking, offering an excellent balance of strength and versatility.
OSB Board Uses and Benefits
OSB board is manufactured from compressed wood strands bonded with waterproof resins, creating a uniform, dense panel that resists warping and splitting. It’s ideal for:
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Roof and wall sheathing
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Flooring systems and decking
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Partitioning and packaging
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Site hoarding and temporary works
At JJ Building Materials, we supply OSB boards in multiple sizes and grades, ensuring you find the right solution for your project’s requirements.
Why Choose OSB Boards from JJ Building Materials
Wide range of OSB board sizes and grades including OSB3 and 18 mm OSB
Moisture-resistant and suitable for internal and external applications
Compliant with UK building regulations and structural standards
Durable, sustainable and cost-effective alternative to plywood
Nationwide delivery and expert product support
FAQs
What is the difference between OSB2 and OSB3 boards?
OSB3 boards are moisture-resistant and suitable for structural use in humid or damp conditions, while OSB2 is intended for dry internal environments.
Can 18 mm OSB be used for flooring?
Yes. 18 mm OSB is ideal for flooring applications as it provides excellent rigidity and load-bearing performance, especially when installed over joists or beams.
Is OSB board suitable for roofing?
Absolutely. OSB board, especially OSB3, is widely used for roof decking thanks to its strength, moisture resistance and easy installation.
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