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Rough Sawn Timber UC2 Treated Kiln Dried Regularised PEFC 44 x 44mm
£2.03 - £11.47 per piece (Ex VAT)£2.44 - £13.76 per piece (Inc VAT)Treated graded carcassing is a structural timber that's commonly used for stud walls, roof and floor joists, and structural joinery. It is machined to have rounded edges, smooth faces and sides, for a more uniformed piece of timber. It is kiln dried to... -
C16 Timber Joists Untreated Kiln Dried Regularised FSC 44 x 95mm
£3.38 - £18.49 per piece (Ex VAT)£4.06 - £22.19 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 Kiln Dried Regularised PEFC 44 x 70mm
£2.77 - £15.58 per piece (Ex VAT)£3.32 - £18.70 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 145 x 3600mm
£5.88 - £33.82 per piece (Ex VAT)£7.06 - £40.58 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... -
Special Offer
C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 100mm
£2.22 - £12.77 per piece (Ex VAT)£2.66 - £15.32 per piece (Inc VAT)This C16 deck joists make the perfect companion for your decking area, as they support the decking planks in place. Featuring UC4 treatment, means that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C16... -
Special Offer
C24 Timber Joists UC4 Treated Redwood 45 x 145mm
£12.60 - £16.80 each (Ex VAT)£15.12 - £20.16 each (Inc VAT)C24 deck joists are 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. C24 graded timber is a premium loadbearing grade... -
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 170mm
£6.46 - £36.35 per piece (Ex VAT)£7.75 - £43.62 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,... -
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 120mm
£4.62 - £25.96 per piece (Ex VAT)£5.54 - £31.15 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,... -
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 220mm
£8.31 - £46.74 per piece (Ex VAT)£9.97 - £56.09 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,... -
Special Offer
C24 Timber Joists UC4 Treated Redwood 45 x 95mm
£8.46 - £11.28 each (Ex VAT)£10.15 - £13.54 each (Inc VAT)C24 deck joists are 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. C24 graded timber is a premium loadbearing grade... -
Rough Sawn Timber Unseasoned FSC 22 x 150mm
£1.95 - £11.23 per piece (Ex VAT)£2.34 - £13.48 per piece (Inc VAT)The UC4 incised posts has a minimum 15 years expected service life. The incising process helps the pressure treatment penetrate further into the timber. FSC approved. This means our timber is sourced responsibly. -
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 190mm
£7.39 - £41.54 per piece (Ex VAT)£8.87 - £49.85 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,... -
Rough Sawn Timber Unseasoned 38 x 50mm
£1.69 - £9.73 per piece (Ex VAT)£2.03 - £11.68 per piece (Inc VAT)The UC4 incised posts has a minimum 15 years expected service life. The incising process helps the pressure treatment penetrate further into the timber. FSC approved. This means our timber is sourced responsibly. -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 170mm
£6.86 - £39.46 per piece (Ex VAT)£8.23 - £47.35 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... -
Special Offer
C16 Timber Joists UC4 Treated Brown Incised Kiln Dried Regularised FSC 47 x 150mm
£3.42 - £19.67 per piece (Ex VAT)£4.10 - £23.60 per piece (Inc VAT)C16 deck joists are perfect for supporting your decking area, as they sit under your decking planks. This brown timber carcassing is UC4 treated, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the... -
Rough Sawn Timber UC2 Treated Type A PEFC 25 x 38mm
£0.90 - £5.17 per piece (Ex VAT)£1.08 - £6.20 per piece (Inc VAT)The sawn treated carcassing has a rough sawn finish, which is pressure treated to prolong timbers lifespan and protect rot or insect attack. This non- structural softwood is ideal for construction and landscaping projects. -
C24 Timber Joists UC4 Treated Green PEFC 45 x 145mm
£6.49 - £37.30 per piece (Ex VAT)£7.79 - £44.76 per piece (Inc VAT)Our C24 timber joists are ideal for supporting your decked area. This timber is treated with UC4 preservative, meaning that not only is it ideal for outdoor use, but it is also suitable for direct contact with the ground. C24 graded timber is produced... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 44 x 195mm
£7.84 - £45.09 per piece (Ex VAT)£9.41 - £54.11 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... -
C16 Timber Joists Kiln Dried Regularised FSC 44 x 145mm
£5.42 - £31.16 per piece (Ex VAT)£6.50 - £37.39 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... -
C16 Timber Joists Kiln Dried Regularised FSC 44 x 70mm
£2.71 - £15.58 per piece (Ex VAT)£3.25 - £18.70 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 44 x 220mm
£8.82 - £50.73 per piece (Ex VAT)£10.58 - £60.88 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... -
C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 70mm
£3.00 - £16.91 per piece (Ex VAT)£3.60 - £20.29 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 Unseasoned FSC 22 x 75mm
£0.98 - £5.62 per piece (Ex VAT)£1.18 - £6.74 per piece (Inc VAT)The UC4 incised posts has a minimum 15 years expected service life. The incising process helps the pressure treatment penetrate further into the timber. FSC approved. This means our timber is sourced responsibly. -
C24 Timber Joists Kiln Dried Regularised PEFC 44 x 245mm
£9.23 - £51.93 per piece (Ex VAT)£11.08 - £62.32 per piece (Inc VAT)C24 is a structural timber typically used to support structures and frameworks for buildings such as walls, ceilings and decking joists. It has many other uses for structural joinery. The use of C24 grade timber, which has a smaller cross-section,...
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.