Glued laminated timber

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Aesthetically attractive structural timber components of large sizes and complex shapes can be fabricated from smaller sawn sections (laminations) by the process of glued lamination, known as 'glulam'. Glulam is a high-performance product for structural engineering applications produced in factories with robust production control systems.


Glulam often catches the eye of designers for use in specialist buildings. However, glulam can be used for most loadbearing structures, especially where visual appearance is important and where long spans or curved members are crucial.

This Wood Information Sheet (WIS) covers an array of topics relating to glulam including strength-to-ratio details, structural forms and a list of some of the most common sizes of glulam.

It follows the Eurocode 5 method of design.



  • Background
  • Structural forms
  • Performance
  • Manufacture
  • Design
  • Further advice


This Wood Information Sheet was revised in April 2019 and minor amendments were made following changes to grading and adhesive standards.

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