Structural Softwood Carcassing Timber

Check stock at your local branch:
  • Characteristics
  • Metric Size

Structural Softwood Carcassing Timber

Structural timber sometimes referred to as carcassing timber, is traditionally used to refer to timbers machined for use in structural applications, such as roof battens, floor joists and studwork for partitioned walls. Structural or carcassing timbers are typically machined to specific dimensions and fire or pressure treated according to their planned usage within a building. 

All stock that Howarth Timber & Building Supplies carries is sourced from leading mills throughout the UK and Europe where our long-standing partnerships and strict quality control initiatives ensure 100% quality each and every time. 

From Scandinavian Redwood/Whitewood C16/C24 graded C16 UK Grown Timbers, Howarth Timber & Building Supplies can supply it quickly, efficiently and at a price that's always competitive. We carry a comprehensive range of sizes and lengths to suit almost every application  

Deck Joists 

Choosing the right grading of Timber for your Deck Joists is incredibly important, to ensure that the structure remains stable. 

Deck Joists are usually graded C16 or C24 and are Pre-Treated to protect them from the weather. Howarth Timber & Building Supplies offer a wide range of Deck Joists, which have been manufactured to meet Class 4 standards for in-ground or direct soil contact. 

Carcassing timber is used for a host of applications, often not requiring any structural element but simply a part of a structure or as a background material. Not suitable for direct decoration or paint finish, this product is usually fixed into or forms a structure which is over clad on a covering substrate. Howarth Timber & Building Supplies branches all carry a wide range of sizes, in a variety of lengths, in stock at all times. 

The term “eased edge” was introduced across the UK trade from 2004 onward. This refers to the timber being semi surfaced and finished to a uniform, relatively smooth dimension with 4 radiused corners to minimise the risk of splinters. Sizes are generally 2mm below thickness and 5mm below width. E.g. a 47x100mm will be 45x95mm actual size. 

Sawn carcassing timbers have been replaced in UK stockists with Eased Edge stocks and are still available to order. However, many branches will carry sawn boards in either an untreated or treated state usually in 25 x 50mm, 25 x 38mm and 100 x 300mm. 

If you require a sawn unsurfaced finish you need to specify this when contacting a Howarth Branch as this will need to be sourced and purchased as a special item for your requirements. We can obtain most sizes within 5 to 10 working days.  

Sawn carcassing timbers have been replaced in UK stockists with Eased Edge stocks and are still available to order. However, many branches will carry sawn boards in either an untreated or treated state usually in 25 x 50mm, 25 x 38mm and 100 x 300mm. 

If you require a sawn unsurfaced finish you need to specify this when contacting a Howarth Branch as this will need to be sourced and purchased as a special item for your requirements. We can obtain most sizes within 5 to 10 working days.  

Structural timber is the unseen necessity to every building project. We supply C16 and C24 carcassing, so whatever your requirements are Howarth Timber & Building Supplies can fulfill them.  

What does C16 timber mean? 
C16 graded structural timber is the most cost-effective option and meets performance requirements. Kiln dried C16 is generally recommended for most applications if the correct spans are used and are mainly used internally for floor and roof joists. Lengths commonly available are 3.0, 3.6, 4.2 and 4.8 metr.e 

What does C24 timber mean? 
C24 graded Premium structural timber is a stronger, more demanding grade and has fewer/smaller knots than C16. C24 is best used where higher loads or wider spans are required. C24 will carry a higher point load than a C16 grade. 

C16 and C24 structural timber, what’s the difference?  

C16/C24 is the strength grade of the timber, this can be graded visually (BS5268) by a registered qualified grader or by machine. Graders’ evaluate the timbers characteristics, taking into account any knots, fissures or slope of grain etc. to determine its strength class. 

Softwoods are graded visually in accordance with BS 5268:2007, or by a machine to EN 14081:2005. 

 

Confused about C16 and C24 structural timber and which grade you will need? Your nearest branch will be more than happy to help.