What is C24 Timber?

What is C24 Timber?

What Is C24 Timber? Understanding C24, Rough Sawn and PAR Timber

When buying timber, you'll often come across terms such as C24, rough sawn and PAR. But what do they actually mean, and which type of timber is best for your project?

At Stockport Timber, we supply a range of timber products for everything from structural building work to general DIY and home improvements. In this guide, we'll explain the differences between C24 timber, rough sawn timber and PAR timber, helping you choose the right material for the job.

What Is C24 Timber?

C24 timber is a strength-graded structural timber commonly used in construction and building projects. The 'C' stands for coniferous timber (softwood), while the number 24 refers to its strength classification.

C24 is graded to meet specific structural performance requirements, making it a popular choice for projects where strength and reliability are important.

Common uses for C24 timber include:

  • Roof rafters and roof joists.

  • Floor joists and ceiling joists.

  • Stud walls and structural framing.

  • General building and construction work.

C24 timber is available in treated and untreated options, depending on your requirements.

Why choose C24? Its certified strength grading makes it suitable for a wide range of structural applications where specified strength performance is required.

 

What Is Rough Sawn Timber?

Rough sawn timber is timber that has been cut to size but hasn't been planed or smoothed. It retains a naturally rough, textured surface, making it a popular and often economical choice for building, landscaping and general construction work.

Unlike C24, rough sawn describes the finish of the timber rather than its strength or structural grade. Rough sawn timber can be available in different grades, depending on the product.

Common uses for rough sawn timber include:

  • Roof structures and general construction.

  • Fencing and garden projects.

  • Timber framing and supports.

  • Sheds, outbuildings and landscaping.

 

Why choose rough sawn? It's a versatile, practical option for projects where a smooth decorative finish isn't necessary.

 

What Is PAR Timber?

PAR stands for Planed All Round. This means the timber has been machined on all four sides to create a smooth, consistent finish.

PAR timber is ideal for projects where appearance and a smoother surface are important. It is commonly used for interior joinery, furniture, shelving and general woodworking.

Common uses for PAR timber include:

  • Shelving and storage projects.

  • Furniture and cabinet making.

  • Interior joinery and finishing.

  • General DIY and woodworking.

Why choose PAR? Its smooth finish makes it easier to work with and gives projects a cleaner, more professional appearance.

C24 vs Rough Sawn vs PAR: What's the Difference?

Although these three terms are often mentioned together, they actually describe different characteristics of timber.

  • C24: Describes the structural strength grade of the timber.

  • Rough sawn: Describes timber that has a rough, unplaned surface.

  • PAR: Describes timber that has been planed smooth on all four sides.

It's worth remembering that these descriptions aren't necessarily alternatives. For example, C24 timber is often supplied with a planed or regularised finish. Equally, rough sawn timber isn't C24 graded.

Which Type of Timber Should You Choose?

The right timber depends on what you're building.

If you're working on a structural project such as roof joists, floor joists or timber framing, C24 may be the right choice where specified by your building plans or structural requirements.

For general construction, fencing, landscaping and projects where appearance isn't particularly important, rough sawn timber is often a practical option.

If you're making furniture, shelving or undertaking interior joinery, PAR timber is usually a better choice thanks to its smooth, finished surface.

If you're unsure which timber you need, it's always worth getting advice before purchasing, particularly for structural applications.

Your Local Timber Supplier – Stockport Timber

At Stockport Timber, we've been supplying quality timber and building materials for over 30 years. As a family-run business with our own fully operational sawmill, we pride ourselves on offering quality products, friendly service and knowledgeable advice.

Whether you're looking for C24 structural timber, rough sawn timber or planed PAR timber, we're here to help you find the right materials for your project.

Looking for quality timber in Stockport and the surrounding areas? Explore our timber range or get in touch with our friendly team today.