C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 44 x 145mm

Treated- Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. C16 or C24 Graded C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher loads and longer spans can be achieved with the use of C24 grade timber often with a smaller cross section. The majority of grading is now performed by machines with x-ray scanning and imaging technology to ensure the timber is within grading guidelines.