C16 graded timber allows for a number of defects that may reduce the overall strength of the wood, such as grain deviations and wanes, as well as an unlimited amount of superficial defects that do not affect the strength of the wood, such as blue sap stains and the like. C16 is the most widely used timber in the UK as it is strong enough to be used in most applications and is considered to be the most cost- effective timber option. 

 

One thing to bear in mind is C16 is likely to be homegrown which essentially means it is grown quicker than C24 imported timbers. We can source C16 graded timbers, C16 graded timber is strong enough for some applications such as wall plates, studwork, rafters, joists etc. 

 

We mostly keep good quality imported graded carcassing timber most of which is C24 grade. Due to good relationships with our suppliers, we can often offer C24 imported timbers at the same price as our competitors who are offering C16 homegrown timbers. This means you will receive a better quality of timber for the same price. 

 

C24 boards have fewer defects than C16 graded timber and the timber is therefore stronger and more resilient than C16 boards. You will also find that C24 boards have a more uniformed and neat appearance as there are fewer physical imperfections on the surface of the board. 

 

C24 timber has been graded to a higher standard than C16. It’s a premium piece of timber that can handle higher loads and wider spans. 

 

C24 grade can only be achieved by importing timber from areas where the climate forces a slower growth rate and hence a tighter grain. 

 

C16 graded carcassing is also available if less strength and lower costs are required. 

 

CLS is specially kiln dried Whitewood that has been planed and finished with eased edges for precision. It is very popular in construction thanks to it being an affordably priced, strong timber of uniform shape and size with good resilience against fire. 

 

The smooth rounded corners of CLS make it safe to handle. It also has knots away from the edges, this not only makes it look tidier and reduces splintering, but also decreases risk of fire spreading through the material. The smooth finish of CLS gives it an appealing look that holds paints, stains and preservatives exceptionally well. A common use for untreated CLS is in internal structural work and low-cost construction projects. 

 

Quality Treated Timber Purlins. These are commonly used on the roofs of agricultural buildings to support roof sheets such as Fibre Cement and Box Profile. The timbers are treated to ensure a long lasting life and because of their depth and width they won’t tend to sag when put on a building.