Overview of CLS Timber

Our CLS carcassing stock is available in sizes 75mm (3x2) and 100mm (4x2). CLS timber is normally used for studwork partitions and so we keep 2.4 metre lengths for interior and 4.8 metre for exterior builds. Stocks are normally graded at C16, sometimes C24 and PEFC sourced.  The PEFC are dedicated to promoting sustainable forest management through independent third-party certification

The normal stock lengths we carry are:

75mm x 50mm (3x2) CLS at 2.4 metres untreated (finish size usually 69mm x 38mm)

75mm x 50mm (3x2) CLS at 4.8 metres pressure treated (finish size usually 69mm x 38mm)

100mm x 50mm (4x2) CLS at 2.4 metres untreated (finish size usually 89mm x 38mm)

100mm x 50mm (4x2) CLS at 4.8 metres pressure treated (finish size usually 89mm x 38mm)

Popular uses of CLS Timbers

Our CLS timber is Kiln Dried (KD) then planed and regularised for a smooth and consistent finish. It is more pleasant to handle than most sawn carcassing. Common uses are for building internal partitions, stud walling and timber framework construction.  The pressure treated (aka tanalised) lengths are also sometimes used for exterior fencing rails. If this is the case we also recommend adding extra preservative and Ronseal End Grain protector for any cross cuts