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Wood types

Wood types durability class

The durability class of wood helps to select the wood type you wish to use. It is important to know that wood is divided into 5 durability classes, with class 1 being very durable and class 5 containing non-durable wood types. This ranking reflects how resistant the wood in question is to fungus. The heartwood in class 1, for instance, is naturally more resistant to weathering than a class-5 wood.

Popular wood types for frames

Hardwood and softwood timber can both be used to manufacture wooden frames. The terms hard and soft have nothing to do with the hardness of the wood: they describe the origin and structure of the wood. Wood from coniferous trees is called softwood and wood from deciduous trees is called hardwood.

The use of hardwood and softwood in frames:

  • Softwood comes from coniferous trees (“coniferous wood”) and includes well-known wood types such as Pine, Larch, Spruce and Robinia. Coniferous trees tend to grow more slowly, which gives the wood a dense structure.
  • Hardwood comes from deciduous trees (“deciduous wood”) and includes well-known wood types such as Oak, Mahogany and Meranti. These are great types of wood for use in a frame because they have a long lifespan. You should always consider whether you will be using the frame indoors or outdoors. 
ClassLevel of durabilityWood type
1Very durableAfzelia, Robinia, Iroko
2DurableMahogany, European Oak, Yew
3Moderately durableDouglas
4Not very durableAmerican Oak, Pine, Spruce
5Not durableAsh, Beech, Maple, Sugi

There are also treatments to make wood more durable, such as acetylation, which is used to create Accoya wood, for example.

Which wood is good for frames?

The term frame wood has a very wide definition, since almost all types of wood can be used to manufacture frames. It is up to you to decide which factors to consider when deciding on a type of wood for your frames. Frame wood includes all wood types that can be processed to manufacture frames. Among others, WEBO can process Iroko, Larch and Douglas to manufacture frames. Have you ever considered having your frames made of bamboo ?

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