Structural Timber

Structural Timber

Type

Wood for Construction

Sub Type

Dimension Timber

Application

Timber System

About the product

Structural timber refers to softwood sections suitable for constructional use, landscaping, and packaging. It is widely used in the construction industry for applications such as roof timbers, joists, studwork, formwork, and more.

The two main species used for carcassing production are Spruce (Sitka Spruce and Norway Spruce) and Pine (Scots Pine). These species are large coniferous evergreen trees, valued for their strength and durability.

Timber used in construction must meet minimum grading requirements. The main strength classes in the UK are C16, C24, and TR26, with C24 and TR26 being higher grades than C16. Graded timber is generally kiln dried to reduce moisture content, but can also be wet graded. Regularised timber has a machined finish for consistent section size. British carcassing is typically available to strength class C16, while imported carcassing is widely available to C24 due to slower growth rates. Every piece of graded timber must have a visible grade stamp indicating the grade, producer, identification number, and condition.

It can be treated with various pressure impregnation cycles depending on the intended end use, most commonly UC2 & UC3. Softwood timber is a renewable resource, certified by PEFC™ and FSC® schemes, ensuring responsible sourcing.