• Product
  • Application

The Egger OSB 4 TOP has many properties that go beyond the OSB 4 standard of EN 300. The very high load-bearing capacity and stiffness, as well as the high moisture resistance and dimensional stability, offer a high degree of safety in all construction applications.

Our OSB 4 TOP have a 3-layer structure of flat aligned strands (micro-veneers). The two cover layers are aligned parallel to each other, the middle layer is perpendicular to them. Besides others, this layer structure is one of the reasons for the exceptional mechanical strength properties of the EGGER OSB 4 TOP.

What makes the OSB 4 TOP from EGGER so special

Thanks to its first-class properties, EGGER OSB 4 TOP is the ideal panel for timber construction – whether in roofs , walls , ceilings or floors . The OSB 4 TOP offers reliable and durable real timber construction quality:

  • stiffening,
  • secure vapour barrier
  • airtight level due to guaranteed minimum air permeability of ≤ 0.12 m³/(m²h) even for the highest requirements.

An overview of the advantages in application:

  • Available formats of up to 3.30m length allow ceiling height constructions and enable an economical and cut-optimized wall planking .
  • The EGGER OSB 4 TOP offers a hugher moisture resistance compared to OSB 3 which results in an improved dimensional stability. This leads to more safety on the construction site and in the building.
  • EGGER OSB 4 TOP with straight edges are produced in the thickness range from 12 to 25 mm with a guaranteed raw density of at least 620 kg/m3. As a result, they have a reduced burn-up rate and offer advantages in fire protection certification .
  • It goes without saying that we guarantee all properties through the comprehensive and meaningful CE declaration of performance (DoP) .

Availability Guide

Download now

Emissionsclasses

The production mainly uses fresh coniferous wood,a formaldehyde-free bonding system and paraffin wax. As a result, the formaldehyde emissions are well below all the currently known limit values of wood-based panels.

Our OSB 4 TOP is 100% bonded without formaldehyde. The formaldehyde emissions of our OSB 4 TOP correspond to emission similar to untreated wood.

Documents and Downloads

Case Studies

The new production hall of Holzbau Albert Manser AG was built within a year.

Modern wood construction for the future

The new production hall of Holzbau Albert Manser AG in Gonten/Appenzell, Switzerland, was completed last autumn.

The new production hall of Holzbau Albert Manser AG was built within a year.

More information

Herbs and lavender were planted on the roof.

Residential honeycombs for the Max-Otto-Bruker-Haus

To fulfil its guest's wishes, the health consulting company decided to build an apartment building, the architecture is inspired by honeycombs.

Herbs and lavender were planted on the roof.

More information

Extensions and storeys were built in timber frame construction.

Turning old into new

In Scheffau am Wilden Kaiser, space was created for three generations by adding storeys and renovating the old building

Extensions and storeys were built in timber frame construction.

More information