July 13, 2015

What are D1, D2, D3 & D4 Adhesives?

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One question we are commonly asked is what the ‘D’ stands for when it comes to adhesives. Many people online find adhesives that look similar but then they see a ‘D2′ or a ‘D4′ next to them. This can seem like jargon but it is a quick way of noting different properties of an adhesive.

The D grading stands for durability.

These gradings are part of the European standard BS EN 204 governing the classification of wood glues for non-structural applications.

There are 4 main types of durability grading, running from D1 to D4. The differences between these are listed below:

For those interested in the classifications, the bond strength requirement for the different classes is listed below:

Wood Glue Classifications

 

We offer a range of products to suit these needs including:

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