Carcassing Timber: What is it and What is it Used for?

Those in the building and construction world will be familiar with carcassing timber. However, our DIYers and beginner builders may not be aware of its numerous benefits. 

Carcassing timber plays a pivotal role in the structural integrity of architectural structures and homes in the UK. Its strength and versatility make it a trustworthy component. 

Today, Beesley and Fildes will touch upon the definition of Carcassing timber and its relationship in the construction industry. Browse our range of high-quality carcassing timber for your next project.

What is Carcassing Timber?

Carcassing timber is rough-sawn timber that is used for the structural framework of buildings. This includes roof battens, stud work for partitioned walls, and floor joists.

Unlike its counterpart, planed timber, which is often used for aesthetic purposes, carcassing timber provides a more natural, rugged appearance. This is cut to various lengths and sizes for different building needs. 

Its strength and durability make it an excellent option for load-bearing applications. For additional security, carcassing timber often undergoes a grading process, where it is assessed and categorised based on strength and quality. 

The Common Uses of Carcassing Timber

The longevity and reliability of carcassing timber have led to it being used across various applications. This includes:

1. Structural Framework in Buildings

Carcassing timber forms the backbone of most commercial and residential buildings. 

For this, it's used to create the studs, joists, and rafters that define the shape and provide the essential support structure of a building.

2. Roofing Applications

This type of timber is used for roof trusses and provides support to the roof covering materials.

From this, a sturdy base layer is created for securely attaching tiles and other materials to the roof. This is often chosen for its ability to withstand harsh weather conditions. 

3. Flooring Support

Carcassing timber provides a sturdy framework for floor joists, which support the floor’s surface. 

These timber joists are essential for creating stable and level floors, able to withstand considerable weight and everyday use.

4. Outdoor Structures

You will often find carcassing timber used in the construction of sheds, gazebos, and summer houses. 

Its robust structure provides the perfect protection against environmental factors, and it can be treated to resist decay, moisture damage, and insect attacks.

5. Fencing and Landscaping 

Carcassing timber is commonly used in fencing and landscaping projects. 

Its strength and versatility provide flexibility for various designs, from fence panels to bespoke garden decor. This is ideal for DIY fence projects as it can be easily cut and installed.

6. Prefabricated Structures

This type of timber is used in the construction of prefabricated panels and modular buildings. 

Its ease of use and strong properties make it ideal for off-site construction methods.

7. Temporary Works and Scaffolding

Carcassing timber is popular in the construction world for scaffolding and formwork. 

Its ability to be easily cut and manipulated to specific sizes and handle heavy loads makes it ideal for these applications.

The Processing and Treatment for Carcassing Timber

Carcassing timber undergoes a thorough processing and treatment process to ensure it’s suitable for application. This process includes the following steps:

  1. Logging and initial processing: Softwoods, such as pine and spruce, are typically harvested. Then, the trees are transported to sawmills, where they are debarked and cut into rough-sawn planks. 
  2. Seasoning and drying: After sawing, the timber must be properly seasoned to reduce its moisture content. This can be done naturally, where the timber is stacked and left to dry over time, or through kiln drying, a faster and more controlled method. This makes it less likely to warp or shrink.
  3. Grading and quality assurance: Grading involves assessing the timber for defects such as knots, splits, and warping. This can be done visually or by using machines.
  4. Preservative treatments: Pressure treatment is a common form of preservative treatment. This includes forcing preservatives deep into the wood fibres to prevent decay, insect infestation, and fungal growth. 
  5. Planing and finishing: This smooths the timber's surface, making it more suitable for external visible works or residential construction.

Choose Beesley and Fildes for your Carcassing Timber

At Beesley and Fildes, we sell a range of carcassing timber, from rough-sawn timber to tanalised timber

Each of our products are designed with durability and quality in mind. Our carcassing timber undergoes preservative treatments to increase its quality and longeivity, perfect for larger projects. 

Browse our range of carcassing timber below, or contact us for professional advice.