6 specifications

OSB Supplier

Q: Which OSB grade should I order?

OSB3 is the practical default: it balances strength and moisture resistance for exterior walls, roofing and humid environments. OSB4 is for heavy structural and industrial flooring work.

Q: What does PMDI glue change?

PMDI is formaldehyde-free, bonds strongly and resists moisture, which supports better indoor air quality. It costs more and needs tighter production control than conventional resin systems.

Q: Can OSB be left exposed to weather during construction?

OSB3 and OSB4 tolerate construction exposure. They are not a permanent exterior finish and should be covered once the building is closed in.

Oriented strand board in OSB1 to OSB4 grades for structural and packaging use.

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The Full OSB Range

Every item the catalogue lists in this category, each with its own specification table and order terms.

OSB

OSB1 OSB2 OSB3 Board

OSB1 OSB2 OSB3 Board is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with WR,WBP,E0,E1,E2...

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OSB

Multi Colors OSB Panel

Multi Colors OSB Panel is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with WR,WBP,E0,E1,E2...

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OSB

Structural Panel OSB Board

Structural Panel OSB Board is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with...

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OSB

Waterproof OSB Board

Waterproof OSB Board is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with WR,WBP,E0,E1,E2...

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OSB

OSB Wood Particle Board

OSB Wood Particle Board is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with...

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OSB

OSB Oriented Strand Board

OSB Oriented Strand Board is supplied at Tolerance +/-0.2mm (thickness<6mm), +/-0.3~0.5mm... thick, with...

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About This Category

What OSB Is Actually For

OSB is built from long wood strands laid in oriented layers and bonded under pressure, which gives it a tight construction and high strength with minimal twisting, delamination or warping.

Grade is the whole conversation. OSB1 and OSB2 are dry-condition boards; OSB3 handles humid environments and structural work; OSB4 carries heavy structural loads.

OSB detail — Oriented strand board in OSB1 to OSB4 grades for structural and packaging use.

Problems It Solves

What Goes Wrong When This Is Specified Loosely

OSB2 specified for humid conditions and failing at the edges
Structural jobs quoted on price without checking the load grade
Formaldehyde class assumed rather than stated, causing customs delay

Who It Is For

Buyers Who Order This Category

Construction contractors sheathing walls and roofs
Packaging and crate manufacturers
Modular and prefabricated building producers

Where It Is Used

Exterior wall sheathing and roof decking
Industrial flooring and load-bearing platforms in OSB4
Indoor partitions and light subflooring in OSB2
Packaging, crating and temporary structures

Core Advantages

What You Get on the Contract

Tight construction and high strength across the panel

Minimal twisting, delamination or warping in service

Waterproof grades that stay consistent in natural or wet environments

PMDI, phenolic and WBP glue options including formaldehyde-free PMDI

Industries That Use It

Industry

Construction and Formwork

Structural panels and formwork plywood built for repeated site use.

See Applications

Industry

Packaging and Industrial

Crating, pallet and industrial panels bought on strength per dollar.

See Applications

OSB Questions

Which OSB grade should I order?

OSB3 is the practical default: it balances strength and moisture resistance for exterior walls, roofing and humid environments. OSB4 is for heavy structural and industrial flooring work.

What does PMDI glue change?

PMDI is formaldehyde-free, bonds strongly and resists moisture, which supports better indoor air quality. It costs more and needs tighter production control than conventional resin systems.

Can OSB be left exposed to weather during construction?

OSB3 and OSB4 tolerate construction exposure. They are not a permanent exterior finish and should be covered once the building is closed in.