If you are looking for CLS timber that is reliable, versatile, and cost-effective for structural building work, Builders Megastore has you covered. We supply high-quality CLS timber suitable for a wide range of internal construction projects, ensuring strength, durability, and ease of use.
What is CLS Timber?
CLS timber is a type of planed softwood that typically comes from kiln-dried spruce or pine. The wood is carefully processed to create smooth, straight edges with slightly rounded corners, making it safe to handle and ideal for construction use. Its consistent finish and uniform sizing make it especially popular in the UK for timber frame building and interior joinery projects.
What Does CLS Timber Mean?
The name CLS stands for Canadian Lumber Standard. This grading system originated in Canada, where this type of timber was first used in timber frame house construction. Over time, it became widely adopted in the UK for studwork and carcassing, thanks to its combination of strength, safety, and practicality.
Key Benefits of CLS Timber
There are several advantages that make CLS timber a preferred choice among builders and DIY enthusiasts:
- Strength and Durability – Its grading (commonly C16 or C24) ensures that CLS timber meets strict structural standards, making it suitable for heavy-duty use.
- Safe Handling – The rounded edges reduce splintering and make transport, storage, and installation much easier.
- Cost-Effective – Available in a variety of lengths and widths, CLS timber minimises cutting and wastage on site, saving both time and money.
- Smooth Finish – Its planed and regularised surface means it can be used for visible internal structures as well as hidden frameworks.
Common Uses of CLS Timber
Because of its strength and consistent finish, CLS timber is widely used in internal construction. Typical applications include:
- Stud walls and partitioning
- Timber frame housing
- Interior framing
- Carcassing and general joinery
- DIY home improvement projects
CLS is available in both C16 and C24 grades. While C16 is ideal for most standard construction jobs, C24 timber provides extra strength and is often chosen for projects where higher load-bearing capacity is required.
Can CLS Timber Be Used Outside?
Yes, CLS timber can be used externally, but only when properly treated. If left untreated, it may be prone to weathering, rot, and insect damage. With the right preservative treatment, however, it can be used for garden structures, external framing, and other outdoor applications.
Buy CLS Timber at Builders Megastore
At Builders Megastore, we stock a wide selection of CLS timber in various sizes and grades to suit your project needs. Whether you’re a trade professional or a DIY builder, you’ll find the right timber for the job at competitive prices, with fast delivery available across London and surrounding areas.
Explore our full range of CLS Timber today and get the materials you need to build with confidence.
