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Rough Sawn Timber Unseasoned FSC 22 x 100mm (4x1)
Carcassing is a generic trade term term meaning the timber is used to form floors, walls, ceilings and roofs of properties. All our timber has full chain of custody, meaning our timber is sourced responsibly. This timber is kiln dried to minimise... -
Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 47 x 50mm (2x2)
£2.05 - £11.81 per piece (Ex VAT)£2.46 - £14.17 per piece (Inc VAT)Ungraded timber means it is neither C16 nor C24 graded, it can only be used for non‑load‑bearing applications. This makes it ideal for general‑purpose uses such as shelving, boxing‑in, panelling, planters, compost bins, small tool stores, DIY joinery,... -
C24 Timber Joists UC4 Treated Redwood 47 x 150 x 4800mm (6x2)
Add the long lasting UC4 C24 Timber Joists to your garden, expertly designed for durability and strength. Ideal for constructing robust decking structures, these joists are UC4 treated, ensuring they withstand direct ground contact and resist moisture,... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 150mm (6x2)
£6.06 - £34.86 per piece (Ex VAT)£7.27 - £41.83 per piece (Inc VAT)C24-treated timber joists are a top choice for structural applications, including stud walls, roof and floor joists, and joinery. With a smaller cross-section than C16, they can support higher loads and longer spans. Discover the unparalleled strength... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 47 x 100mm (4x2)
£4.04 - £23.24 per piece (Ex VAT)£4.85 - £27.89 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
Rough Sawn Timber Untreated Regularised FSC 47 x 50mm (2x2)
Ungraded timber means it is neither C16 nor C24 graded, it can only be used for non‑load‑bearing applications. This makes it ideal for general‑purpose uses such as shelving, boxing‑in, panelling, planters, compost bins, small tool stores, DIY joinery,... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 125mm (5x2)
£5.05 - £29.05 per piece (Ex VAT)£6.06 - £34.86 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
Rough Sawn Timber Unseasoned FSC 22 x 150mm (6x1)
Carcassing is a standard term term that means the timber is used to form floors, walls, ceilings and roofs of properties. Unseasoned timber means timber than has not yet dried to a moisture content matched to its intended environment, which means it can... -
C16 Timber Joists Untreated Kiln Dried Regularised FSC 47 x 100mm (4x2)
C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C16 Timber UC2 Treated Kiln Dried Regularised PEFC 47 x 75mm (3x2)
£3.03 - £17.43 per piece (Ex VAT)£3.64 - £20.92 per piece (Inc VAT)C16 graded carcassing is a structural timber commonly used for stud walls, roof and floor joists, and structural joinery. C16 is normally the grade that is produced from faster grown UK timber. It is machined to have rounded edges, smooth faces, and... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 200mm (8x2)
£8.08 - £46.48 per piece (Ex VAT)£9.70 - £55.78 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
Tile Roofing Batten Full Graded Rough Sawn Timber Treated UC2 PEFC 25 x 38mm
A premium batten, fully graded to meet all aspects of BS5534:2003+A1:2010, eliminating the need for grading on site. Approved for New Builds & Replacement Roof projects. These roof battens or tile battens are neither C16 nor C24 graded, it can... -
Type-A Tile Roofing Batten Rough Sawn Timber Treated UC2 PEFC 25 x 38mm
This treated timber roof batten is a reliable, cost‑effective solution ideal for repairs, refurbishments, and replacing existing roofs, by creating fixing point for tiles on pitched roofs. Although this batten is not suitable for new builds as that needs... -
C16 Timber Untreated Kiln Dried Regularised FSC 47 x 75mm (3x2)
C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 175mm (7x2)
£6.53 - £37.57 per piece (Ex VAT)£7.84 - £45.08 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
Type-A Tile Roofing Batten Rough Sawn Timber Treated UC2 PEFC 25 x 50mm (2x1)
£1.20 - £6.90 per piece (Ex VAT)£1.44 - £8.28 per piece (Inc VAT)This treated timber roof batten is a reliable, cost‑effective solution ideal for repairs, refurbishments, and replacing existing roofs, by creating fixing point for tiles on pitched roofs. Although this batten is not suitable for new builds as that needs... -
C24 Timber Decking Joists UC4 Treated Kiln Dried Regularised Green Redwood PEFC 47 x 150mm (6x2)
C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 125mm (5x2)
£4.67 - £26.83 per piece (Ex VAT)£5.60 - £32.20 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 225mm (9x2)
£8.40 - £48.30 per piece (Ex VAT)£10.08 - £57.96 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C24 Timber Decking Joists UC4 Treated Kiln Dried Regularised Green Redwood PEFC 47 x 100mm (4x2)
Our C24 timber joists are a perfect for supporting your decked area. This timber is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C16 and C24 are strength grades; the higher... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 175mm (7x2)
£7.07 - £40.67 per piece (Ex VAT)£8.48 - £48.80 per piece (Inc VAT)C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that is produced from faster grown UK timber. C24 is a premium product as the wood is slower grown and is also denser. Higher... -
C24 Timber Joists Untreated Kiln Dried Regularised FSC 47 x 100mm (4x2)
£3.73 - £21.47 per piece (Ex VAT)£4.48 - £25.76 per piece (Inc VAT)Treated C24 is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. The use of C24 grade timber, which has a smaller cross section, allows for higher loads, and longer spans. C24 grade has fewer... -
Rough Sawn Timber UC3u Treated Unseasoned UK FSC 25 x 50mm (2x1)
Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. Carcassing is a... -
Green Paling Fence Board Treated Timber UC3u Unseasoned FSC 22 x 200mm (8x1)
Treated timber is suitable to be used externally and is suitable for wet areas or areas where the timber will be coming into contact with the ground. Examples of treated timber uses are outdoor decking, shed bases, posts, sleepers. Please note: Timber...
Rough Sawn Timber
What is Structural Carcassing Timber?
Often referred to as carcassing timber, this type of wood is most commonly used in structural applications that involve the timber being used in an area that won’t be seen, and typically comes in three gradings:
- C16 Timber
- C24 Timber
- Part Graded Timber
Do I need Treated Structural Timber?
If the timber is going to be placed in an area where attacks from external problems such as moisture or fungal attacks, are likely to cause major problems, then we strongly recommend purchasing treated structural timber.
For all the following applications, we generally recommend using a treated structural timber:
- Roof Rafters
- Timber Framing
- Ceiling Joists
- Floor Joists
- Deck Joists
I need a Sawn Finish Structural Timber
Sawn Carcassing Timber has largely been replaced in UK stockists with “eased edge” stock being introduced in the UK in 2004.
Eased Edged means that the timber is semi-surfaced and finished to a uniform finish that is relatively smooth. Four corners are radiused to reduce the likelihood of splinters.
Most of our branches do hold stock of sawn boards that are either treated or untreated. However, if you require a sawn unsurfaced finish, please contact your nearest branch, who will be able to source this as a special item to meet your requirements. Most sizes can be obtained within 5 to 10 working days.
Confused about C16 and C24 structural timber and which grade you will need? Your nearest branch will be more than happy to help.