Technical information

Glue Laminated Beams (Glulam) / General

Glulam consists of at least three fibre parallel oriented glued board laminations. Glulam is generally exposed to bending stress so that the tension or compression areas will experience the highest strain. The layered construction of Glulam means that the laminations can be arranged according to their grade. Bending members are high grade laminations placed in tension. The compression zone follows the direction of the strain consists of lower lamination strength.

Stress Grades UK (Germany)

(according to DIN 1052:2004-08/EN1194:1999 and/orprEN14080)
GL24 h (BS11)
GL28 h/c (BS14)
GL32 c (BS16)
c =Combined layup
h =Homogenous layup

Wood species

European Spruce (picea app.), Larch are the common species used. Other less common species can be explored upon special request.

Wood moisture content

12% ± 2% at delivery


Waterproofed adhesives approved for interior and exterior applications, tested in accordance with EN 301/302

Lamination thickness

According to EN 386 – up to 42mm max


Widths: from 60mm  to 280mm – Heights: from 100mm  to 220 mm
Lengths: from 3m to 36 m (longer lengths & above 14m are subject to transport arrangements).


Glulam members are coated with a base preservative offering a temporary protection until erected and decorated in the final decoration unless agreed otherwise at time of order. All steel connection parts and fittings are galvanised to BS EN ISO 1461. Additional treatments can be supplied where agreed to components, such as lacquers, stains and varnishes allowing a final coat to be applied on site buy others. Steel connection parts, where specified, can have an intumescent coating applied on or off site where required.