COVID 19: We are currently OPEN and are running our usual operating hours and delivery times. Following Government guidance, we are operating under strict social distancing rules. We are only able to admit one household or bubble into the shop at one time. All customers must wear masks. If you have any Covid symptoms, please do not visit us until you have had a test. For any queries, please call our Bedford or St Neots branch.  

Carcassing (Structural) Timber

The phrase carcassing is normally used to refer to timbers processed for use in structural applications, for example; roof battens, floor joists and studwork for partition walls

Imported vs. home grown?

Bedford Timber Supplies carry a wide range and large quantities of carcassing (structural) timber, from Sweden and the Baltic states. These timbers are generally preferred to home grown timber because they grow slower overseas, have tighter growth rings and will grade to a higher standard.

Imported timber is available from sizes 19mm x 38mm up to 300mm x 300mm.

Lengths of imported timber are available from 2.4 meter up to 7.2 meter.


Timber strength and grading

Structural applications require carcassing timber to be marked to show they comply with the correct standards and strength that are stipulated by building codes and regulations. Imported timbers are almost always regularised, kiln dried and graded at the individual sawmills to BS4978 strength classes C16 and C24.

Additionally we are a TRADA (The Timber Research and Development Association) certified visual grader who can visualise grade large softwood timbers which we have been machined specifically to a customer’s requirements.

Machine grading measures the resistance of the timber member to flexing, which gives a measure of the strength of the piece. Machine grading is carried out to the requirements of BS EN 14081 PARTS 1-4 – this is the European Harmonised Standard for the strength grading of timber for structural purposes.


Treated timber

All treated carcassing is pressure treated to a minimum hazard class-2 to minimize any deterioration from damp buildings or where used externally from our suppliers. This is added to the timber from source at the mill or at our importers in their own treatment tanks onsite.

If you require a specific treatment application for timber, please check our Treatment page.

If you have a question or would like more information, contact us now.