Classification and Warranty

Definition, Classification and Properties


Below are the FAQ's about EGGER OSB including the intended usage and features or the product.

What is OSB?

OSB to płaska i solidna drewniana płyta konstrukcyjna, wykonana z ułożonych na krzyż drewnianych włókien wyselekcjonowanej jakości, spajana żywicą syntetyczną w wysokiej temperaturze i pod dużym ciśnieniem. W zależności od klasy technicznej (typu) i przeznaczenia, płyty można stosować w warunkach suchych lub wilgotnych.

How many types of OSB exist and what is the intended use for each?

According to EN 300, there are 4 types of OSB, known as technical classes:

OSB/1 → general purpose non load-bearing boards for use in dry conditions (service class 1)

OSB/2 → load-bearing boards for use in dry conditions (service class 1)

OSB/3 → load-bearing boards for use in humid conditions (service classes 1 & 2)

OSB/4 → heavy-duty load-bearing boards for use in humid conditions (service classes 1 & 2)

Among these, OSB/3 is currently the most used product in Europe.

The standard OSB boards have un-sanded faces and sharp edges, but smooth/sanded faces and milled edges (2 or 4-sides „tongue and groove“ T&G profiles) are also possible to manufacture.

What are the main features of OSB?

OSB is a plane and sturdy board, with remarkable mechanical properties and dimensional stability.
Its main function is the structural use (structural floor, roof and wall sheathing), but also incorporates the function of a vapor barrier and of an airtight layer when used in the exterior components of wood frame houses.



Find out about the lifetime of EGGER OSB and what warrantly we provide below.

What is the lifetime of the OSB boards?

If correctly stored, transported, handled, installed and maintained over the lifetime of the building, the OSB boards keep unaltered their mechanical properties for at least 50 years.

Does EGGER provide any warranty for its Eurostrand OSB boards

EGGER fulfills all its duties as manufacturer according to the European Construction Product Regulation (CPR).
The relevant documents are the Declarations of Perfomance for each CE-marked product.