A Guide to CLS Timber

Are you considering using CLS timber for a future construction project? CLS timber has a variety of outstanding features, such as being durable, robust, and proportioned for a wide range of uses. As a result, CLS timber has become a popular and cost-effective solution for a variety of functions and projects.

We've broken down all you need to know about the popular timber in this article to help you determine if it's the right material for you, including its features, characteristics, and most common trade uses for your DIY / self-build project.

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What is CLS timber?

CLS timber is produced from softwoods such as fir, pine, and spruce. The wood is kiln-dried for increased durability and to reduce moisture content, and it is also treated with pesticides to keep insects and decay at bay. Also, all four sides of the CLS timber are surfaced to give rounded edges and a smoother finish.

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What does CLS timber stand for?

CLS timber is an abbreviation for Canadian Lumber Standard, as it was originally produced in Canada. It was first used to build strong timber-framed buildings or structures before becoming widespread all over the world.

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What are the main benefits of CLS timber?

CLS timber contains several key benefits to consider when opting to use it in your project. Such as:

• It has excellent strength, and a higher durability when compared to other types of wood. This makes it an excellent choice for construction, particularly internal structural projects like stud walls or partitions.
• CLS timber is also particularly easy to transport, and incredibly safe to handle.
• It lacks huge knots on its edges and features properties that minimise the spread of future fire breakouts.
• There is also a wide range of CLS timber sizes available, in a variety of widths and lengths, making it an excellent choice for not just minimising the time spent cutting it to size, but for also lowering the cost of timber waste.

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How is CLS timber used?

CLS timber is particularly useful for jobs such as:

• Timber framework construction
• Carcassing
• Stud walling
• Building internal partitioning
• Interior framing

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Is CLS timber treated?

If you are planning to use CLS timber outside, it should be pressure treated. You should then also treat it further to offer even more protection against elements. Thankfully, liquid-repelling preservatives, paints with block UV rays and sealers that maintain colour can all be used on CLS timber.

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Our CLS Timber products

At Howarth, we have a wide range of CLS timber sizes UK and products available, such as:

• CLS Timber FSC 38 x 89mm available in sizes 2.4m, 3m and 4.8m.
• CLS Timber PEFC 38 x 89mm available in sizes 2.4m, 3m and 4.8m.
• CLS Timber UC2 Treated PEFC 38 x 89mm
• CLS Timber 38 x 140 x 2400mm
• CLS Timber PEFC 38 x 140 x 4800mm
• CLS Timber UC2u Treated PEFC 38 x 63 x 3000mm
• CLS Timber FSC 50 x 75 available in sizes 2.4m, 3m and 4.8m
• CLS Timber PEFC 50x75 available in sizes 2.4m, 3m and 4.8m

Think CLS timber could be right for your project? You can also access our wide range of CLS timber products on our category page, here.

And if you have any other questions regarding CLS timber, or would just like to discuss your project with someone from our helpful and friendly team, you can call us on the number 01472 907051.