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Solid wood products, reconstituted by gluing

18.09.2025

In connection with the document produced by Jean Gérard and Emmanuel Groutel comming soon and the presentation at Racewood (accessible via this link), we invite you to review the types of products found among solid wood reconstituted by gluing.

There are two main product families.

  • Non-structural products

Intended for carpentry and interior design, these products must have minimum mechanical characteristics to ensure the solidity of the structure.

  • Structural products

These products are subject to mechanical stress, which requires sufficient performance and strength to guarantee the safety of the structure and people.

Lists of glued solid wood products:

  • Finger-jointed solid wood (BMA)

SST is assembled using an end-gluing process. This mechanism eliminates the main defects in the wood while reconstituting the material, thus producing long pieces.

  • Glued laminated timber (GLT)

Made from solid wood lamellas less than 45 mm thick, these elements are then stacked and glued together. In addition to offering long spans, the beams produced in this way offer excellent stability and can be used in large-scale structures. There are also glued laminated panels, which are used in carpentry (furniture manufacturing, worktops, etc.).

  • Solid reconstituted wood (BMR)

Like GLT, SRW consists of strips more than 45 mm thick, usually glued together in 2 or 3 pieces. This product offers great stability and allows for the construction of large sections of wood without the risk of splitting.

  • Cross-laminated timber (CLT)

This product combines the techniques of cross-laminated timber and plywood, combining the gluing of solid wood strips with the principle of crossing layers. The resulting panels are used to make load-bearing walls, floors, stairs, and even as a waterproofing support for roofs.

Why bond wood?

Glued wood products improve the material yield from trees during sawmill cutting. The diversity of logs (small diameters, irregular shapes, etc.) makes it difficult to obtain solid products of satisfactory dimensions. In addition, during processing, drying causes deformations that require reworking of the wood, thereby reducing material yield. The use of gluing techniques also offers the possibility of utilizing other species (LKTS) that are usually difficult to exploit due to their intrinsic defects. The objective is therefore to produce smaller pieces and then reconstitute them using existing gluing processes.

download the presentation

 

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