Engineered wood products

UKAS accredited testing laboratory for engineered wood products, including EN408, Glulam, I-joists & metal web beams.

We offer testing and verification of a wide variety of structural engineered wood products used in construction, including:
  • engineered I-Joists
  • glued laminated timber (glulam)
  • composite wood based products e.g. Laminated Veneer Lumber (LVL), Parallel Strand Lumber (PSL), Laminated Strand Lumber (LSL)
  • metal-web joists
  • finger-jointed structural timber
  • engineered wood box sections, joists and columns

We undertake a wide range of standard and non-standard testing that allows the characteristic strength properties of engineered wood products to be determined as well as non-structural tests such as glue bond quality. Our testing is UKAS-accredited for structural timber, and all our tests are conducted to the same high standards. Our testing facility allows us to accommodate a wide range of engineered wood products (up to 8m long).

As with all structural timber products, the performance of engineered timber products is verified following European testing standards where possible. However, in some cases national or customary standards, or bespoke testing protocols may be adopted to meet the requirements of a specific project or product.

Typical performance tests
Typically the tests carried out to establish the performance of engineered wood products include the following:
  • bending strength and stiffness to EN 408 for structural sized beams including glulam
  • CUAP for Metal-web joists
  • shear strength to TR002 for I-Joists
  • bearing strength to TR002 for I-Joists
  • glue bond block shear test for glulam to EN 392 / EN 14080.
Some of these tests allow products to be classified to standard strength classes, such as those in EN 1194 for Glulam. Alternatively, the tests allow characteristic performance to be declared as part of gaining CE marking or Q-Mark certification. The tests may also be used for quality control or independent auditing of the performance of established products. Our tests can also be used to verify software models as part of a product approval or design process.

We also have the expertise to analyse test results in accordance with appropriate standards, such as EN 384 or EN 14358, or to verify the analysis by others. Our engagement with standards committees means that our understanding of the interpretation of test results is second to none.
Engineered timber products
Engineered timber products are manufactured by combining smaller timber components. These vary in scale from large wafers or long strands of veneer, to sheets of veneer. They can use thin strips of solid wood or combinations of solid wood and wood based panels up to full size pieces of strength graded timber or panel products.

Engineered timber products are fabricated under tightly controlled conditions as they rely on structural adhesives for their strength and integrity. Metal web joists do not use adhesives, but v-shaped metal webs with toothed anchorage plates pressed into timber flanges.

Typically, engineered wood products provide a range of benefits compared with solid timber joists, such as larger spans, higher strength capacities, lower weight relative to their cross-section, or openings for services. Glulam can be used to create large scale curved components.
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