Timber species and sourcing

We supply timber products from responsibly managed forest.

Imported Timber

Our standard glulam is manufactured in our factory using machine strength-graded imported whitewood timber available in GL24h. For exterior glulam we can use siberian larch which is one of the most weather resistant species.

Home grown timber

We are currently undergoing an extensive testing and certification programme for the manufacture of glulam from British grown timber with BMTRADA.

Testing is underway on Larch, Douglas Fir and Sitka Spruce. Once testing is complete we will have specific mechanical strength properties for glulam made from each of these species and will be able to carry out designs using these properties. This approach will ensure that the local timber can be used in the most efficient way. More details of the properties of Larch, Douglas and Sitka are given below;


Larch is a deciduous conifer common in the south west of England. Larch has good durability and strength properties and produces an attractive reddish coloured timber. It is well suited for glulam which will have some exposure to the elements. Currently Larch is suffering from the disease Phytophthora ramorum in the south west and is sadly in plentiful supply as sawlogs.

Douglas Fir

Douglas Fir is another conifer abundant in the south west. Douglas is a fast growing tree but still with good strength properties and durability, producing an attractive reddish timber similar to Larch. Douglas Fir are also common in North America and is the second tallest conifer in the world.

Sitka Spruce

Again abundant in SW England and also with large reserves in Wales, Sitka Spruce produces a white coloured timber, similar to the ‘whitewood’ imported glulam which is made predominantly from Norway Spruce. Spruce does not have quite such good durability properties as Larch and Douglas and is best limited to internal use unless treated.

Other Species

We are always looking into making glulam using other timbers such as Oak- please contact us if you have a specific requirement.