This tutorial would be for you if you thought all wood was equal. You’ll soon get up to speed on all you need to know about wood, from the differences between timber and lumber to the most prevalent possibilities. Almost every building or DIY endeavor uses wood, and this is where the builder’s adventure begins. Whether you’re building a birdhouse or a new home for yourself, Savewithnerds has the complete guide on everything that you need to know about CLS timber. Also, you can check out the best deals and offers on CLS timber on the official Dunelm website.
Difference between Timber and Lumber
“Timber” and “Lumber” are frequently used interchangeably in wood and wood products. However, they are not the same thing. Timber is a timber that has yet to be harvested – wood that is still alive. Lumber is a processed piece of wood cut to specific dimensions – lumber is processed timber. You may also argue that every lumber was once timber, but not all timber will become lumber. Different secondary connotations have evolved to connect with these nouns throughout time.
Aside from the fundamental distinction outlined above, timber may also refer to any wood with bark, whereas lumber is bark-free when both parts receive treatment to some extent. The terms’ use differs geographically as well. Lumber is a term used to describe timber planks in Canada and the United States. Timber is used interchangeably in the United Kingdom and Australia.
Types of Timber
Three types of timber exist in the market. The features of these three types of timber are as follows:
1. CLS Timber
“Canadian Lumber Size” or CLS timber is completed on all sides, resulting in a smaller cross-section than standard sawn timber. The name suggests that it came from the Canadian market and is most common for a wood frame home building and interior and partition walls.
2. Roofing Battens
These are smaller cross-section-sawn timbers used primarily in roofing applications.
3. Carcassing Lumber
These conventional sawn timber planks are available in various cross-sections and lengths up to 6m.
How is Timber Graded?
Each wood species has unique mechanical and physical qualities. Each tree also grows in response to its distinct physical location and biomechanical requirements. Thus each species is unique. There is so much variation that two pieces of wood from the same tree might be more diverse (in terms of physical and mechanical attributes) than pieces from two different trees. These qualities are evaluated and rated for each timber used in construction. The strength grading procedure demonstrates how effectively the elements interact with a particular design to provide a safe final structure. The examination is non-destructive and finds and rejects bits of lower-quality timber. The strength, rigidity, and density of the passing components are assured.
What is CLS Timber?
Canada created Canadian Lumber Standard or CLS timber. Because of its strength and longevity, it is becoming a favored choice for many builders. Typically, it comprises kiln-dried spruce, pine, or fir that undergoes planning and treatment. Finally, the lumber is polished with rounded edges to ensure construction correctness and precision. CLS lumber is available in a variety of sizes to meet a variety of requirements. It has an attractive appearance, with a clean surface that accepts paints, preservatives, and stains nicely. It is predominantly used for interior partitioning, timber-frame building, caressing, and framing in the United Kingdom. Because it has rounded arrases and surfaces on all sides, it is also ideal for interior stud walling. The EN338 grading might be C16 or C24 depending on the individual pieces of wood.
What is Tanalised Timber?
Tanalized lumber is wood that has been pressure impregnated with Tanalith E, which means that the chemicals drive into the wood under tremendous pressure. The preservative forms a unique blend of organic biocide chemicals and copper and provides excellent, long-lasting protection against insect activity and wood degradation. The recipe has been thoroughly tested and is certified by the European Union’s Biocidal Product Regulations so that you can be confident in its quality and safety. Tanalith is a brand name, and the chemicals used by a specific manufacturer may have a different name, but the effect is the same. There will be a distinct stamp indicating that the lumber has been Tanalised.
Tanalized wood may survive for up to 60 and 30 years in the interior and outdoors, making it an excellent choice for any outdoor project. Treatment is not required, although it is to prevent discoloration that can occur over time. After the first year, paint your woodwork with a layer of Tanalised wood treatment. You can also treat it with colored wood paint if you wish; apply some preservatives before sealing it. Otherwise, the moisture concentration will prevent the color from adhering to the surface.
Strength Grade In CLS Timber
The Grade of Strength for CLS timber wood is typically available in two strengths:
1. C16 Grade
C16-graded sawn wood is the most cost-effective alternative and will meet most criteria if the appropriate spans meet. Its primary application is for roof and floor joists.
2. C24 Grade
Sawn timber rated C24 is a superior structural timber with fewer and smaller knots than C16 Grade. Because it is more robust, it is employed when longer spans or heavier weights are necessary—only imported timber from regions where the environment imposes a modest development rate. Hence a tight grain may attain a C24 Grade. Homegrown UK timber only receives a rating of C16 because of its rapid growth.