OSB 3 board

OSB/3 (oriented strand board) is one of the most popular sheet materials on the market today. It is chosen wherever strength, moisture resistance, fast installation and a reasonable price matter at the same time.

High strength and reliability

OSB/3 boards are made from processed wood strands laid in several layers and bonded with high-strength resins. This structure gives the board a high load-bearing capacity, resistance to deformation and a long service life.

The material is ideal for floors, walls, roofs and timber-frame construction.

Moisture-resistant OSB/3 — for any conditions

Unlike standard OSB, OSB/3 is moisture-resistant and can be used in humid conditions. This makes it a great fit for:

• containers and modular buildings;
• warehouses;
• temporary and permanent structures;
• commercial and industrial facilities.

When installed and used correctly, the boards stay stable and reliable for many years.

Quick, simple installation — saving time and budget

The light weight and precise geometry of OSB/3 boards allow installation without heavy construction equipment. This shortens the work schedule and reduces the overall cost of construction.

Thermal and acoustic properties

OSB/3 improves a building's thermal performance and reduces heat loss. Combined with insulation materials, it helps create an energy-efficient building and lowers heating and cooling costs. Its dense multi-layer structure also works well as part of sound-insulating wall and roof assemblies.

Affordable and eco-friendly

OSB/3 is an economical material that reduces the project budget without compromising quality. The boards are made from environmentally clean raw materials and are safe for use in living spaces. Contact us for current prices and availability.

Long service life and easy repair

Structures built with OSB/3 boards last a long time. If damage occurs, only the affected board needs replacing, which keeps repair and maintenance costs down.

How to choose OSB/3

Board thickness depends on the purpose of the structure. A thinner board is enough for wall sheathing, while floors and roof decks, which carry more load, need a thicker board. The spacing of joists and rafters also matters: the greater the distance between supports, the thicker the board should be. Tell us about your project, and we will help you choose the right thickness and quantity.

Storage and installation tips

• store the boards flat, on a level surface, in a dry, covered place;
• before installation, let the boards adjust to the conditions of the building;
• leave a small gap between boards to allow for thermal and moisture expansion;
• outdoors, protect the board edges and surface from moisture with a suitable coating;
• use fasteners suited to the board thickness and keep to an even fixing pitch along the supports.

Following these simple rules keeps the boards flat and stable and lets you get the full service life out of the material.

Why choose OSB/3 boards from Sian Group?

• a vast warehouse site — large stock in one place;
• wholesale prices that compete with manufacturers' prices;
• quality boards that meet European standards;
• competitive prices;
• many years of experience;
• fast delivery;
• professional advice on choosing the material.

OSB/3 boards from Sian Group offer the right balance of quality, reliability and affordability for projects of any size.