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Travis Perkins: A Comprehensive Guide to CLS Timber

When it comes to construction and building projects, selecting the right type of timber is crucial to ensure strength, durability, and overall structural integrity. Canadian Lumber Standard timber, commonly known as CLS timber, has emerged as a preferred choice for various applications in the construction industry. In this comprehensive guide, we’ll delve into the world of CLS timber, exploring its origins, characteristics, uses, treatment processes, and the advantages it offers to builders and contractors.

What is CLS Timber?

CLS stands for Canadian Lumber Standard, and it’s a type of timber primarily made from kiln-dried softwoods like pine, fir, or spruce. Originally produced in Canada, CLS timber is now manufactured globally and is renowned for its suitability in constructing robust, long-lasting timber frames used in construction projects.

The Types of Wood in CLS Timber

CLS timber can be crafted from various softwood species, including fir, spruce, and pine. To enhance its durability and usability, CLS timber undergoes a meticulous kiln drying process, which removes moisture and strengthens the wood. It often features a rounded edge, making it safe and straightforward to work with.

Sizes of CLS Timber

CLS timber is available in a wide array of sizes and lengths, typically categorized as C16 and C24 strength grades. These variations cater to different project requirements. At Travis Perkins, for instance, you can find pre-cut CLS studwork timber ranging from 2.4 meters to 6 meters in length, with thicknesses spanning from 38mm to 75mm. The flexibility to cut CLS timber to the required size reduces wastage and minimizes material costs.

Treatment of CLS Timber

Most CLS timber undergoes a two-step treatment process. Initially, it is kiln-dried to eliminate moisture and bolster its strength. Subsequently, the timber is pressure-treated and subjected to pesticide application to guard against insects and fungal infestations. This treatment renders CLS timber resistant to moisture while enhancing its strength and longevity.

Common Uses of CLS Timber

CLS timber’s strength and versatility make it an ideal choice for a multitude of construction applications, including:

Partitioning: CLS timber is frequently employed in creating partitions within buildings.

Stud Wall Construction: Its durability makes CLS timber perfect for framing and constructing stud walls.

Floor Joints: CLS timber is employed in creating floor joints, adding structural integrity to buildings.

Door and Window Frames: Its stability makes it an excellent choice for crafting door and window frames.

Roof Battening: CLS timber is used for roof battening, providing support for roofing materials.

Carcassing: It is essential for creating the skeletal structure of buildings.

Internal Structural Work: CLS timber plays a vital role in the initial stages of constructing room layouts, door frames, and roof frames.

It’s worth noting that CLS timber is primarily used indoors due to its softwood nature. However, with proper additional treatment, it can be suitable for outdoor use as well.

CLS Timber Strength Grades

CLS timber comes in two primary strength grades:

C16: Slightly less strong but often more cost-effective.

C24: Stronger but can be relatively more expensive.

Builders and contractors choose the strength grade based on the specific load-bearing requirements of their projects.

Benefits of CLS Timber

CLS timber is renowned for several key advantages:

Strength and Versatility: It is both strong and versatile, making it suitable for various construction needs.

Moisture Resistance: Kiln drying and treatment processes make CLS timber resistant to moisture, reducing the risk of warping or decay.

Insect and Fungal Resistance: The preservative treatment protects against insects and woodworm.

Fire Resistance: CLS timber, with fewer knots, is more fire-resistant compared to some other timbers.

Ease of Use: Its lightweight structure and rounded edges make CLS timber safe and simple to work with.

Longevity: CLS timber is known for its long-lasting durability, making it ideal for internal timber structures.

Why Choose CLS Timber from Travis Perkins

When it comes to construction and building projects, the choice of timber can significantly impact the quality and durability of the final structure. Canadian Lumber Standard (CLS) timber has long been recognized for its strength and versatility, making it a preferred choice for many builders and contractors. In this article, we will explore why choosing CLS timber from Travis Perkins is a wise decision, highlighting the quality, convenience, and range of options available.

Quality CLS Timber

One of the primary reasons to opt for CLS timber from Travis Perkins is the exceptional quality of their products. Travis Perkins is a reputable supplier known for its commitment to providing top-notch construction materials. Here’s why their CLS timber stands out:

Kiln Dried: Travis Perkins offers kiln-dried CLS timber, which undergoes a meticulous drying process to remove excess moisture. This ensures that the timber is less likely to warp or decay, guaranteeing a sturdy and long-lasting structure.

Variety of Sizes: Travis Perkins stocks a wide selection of CLS timber sizes and lengths, catering to different project requirements. From 2.4 meters to 6 meters in length and thicknesses ranging from 38mm to 75mm, you can find the perfect fit for your needs.

Strength Grades: Travis Perkins provides CLS timber in both C16 and C24 strength grades. This variety allows you to choose the right grade based on the specific load-bearing requirements of your project, providing flexibility and cost-efficiency.

Preservative Treatment: The CLS timber available at Travis Perkins is not only kiln-dried but also treated with preservatives. This treatment enhances the timber’s resistance to moisture, insects, and fungal decay, ensuring its longevity and durability.

Eased Edges: Some of the CLS timber options at Travis Perkins feature eased edges, making them easier to handle and work with. This added convenience can streamline your construction process.

Convenience of Shopping at Travis Perkins

Choosing CLS timber from Travis Perkins also offers the convenience that every builder and contractor appreciates:

Branch Locator: Travis Perkins has an extensive network of branches across the UK, making it convenient to find a nearby location for easy access to your construction materials.

Delivery and Collection Options: Travis Perkins provides flexible delivery and collection options. You can have your CLS timber delivered directly to your project site or choose to collect it from a local branch, whichever suits your needs.

Online Tools: Travis Perkins’ website features handy tools like the Branch Locator, Hire Basket, Quote List, and Sign In / Activate options. These tools make it simple to plan your purchase and manage your construction materials efficiently.

Wide Range of Products: In addition to CLS timber, Travis Perkins offers a comprehensive range of building materials, including timber and sheet materials, doors, windows, plumbing, electrical, and more. This one-stop-shop approach can save you time and effort in sourcing all your construction needs.


When it comes to choosing CLS timber for your construction projects, Travis Perkins offers a winning combination of quality and convenience. Their commitment to providing top-quality, kiln-dried, and treated CLS timber ensures that your structures will be strong and durable. Additionally, their extensive branch network, delivery options, and online tools make the purchasing process straightforward and efficient. So, whether you’re working on a small DIY project or a large-scale construction endeavor, Travis Perkins is a reliable source for your CLS timber needs.

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