C24 Timber | Howarth Timber

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Special Offer

Special Offer

C24 Timber Decking Joists UC4 Treated Kiln Dried Regularised Redwood 47 x 100 x 3600mm (4x2)

WAS: each

WAS £18.73

£12.24 each (Inc VAT)

WAS: each

WAS £15.61

£10.20 each (Ex VAT)

Crafted for durability and strength, our C24 Timber Joists UC4 Treated Redwood 47x100x3600mm are the ideal choice for your outdoor decking projects. These joists are UC4 treated, ensuring they are well-suited for ground and water contact, making them...

WAS: each

WAS £18.73

£12.24 each (Inc VAT)

WAS: each

WAS £15.61

£10.20 each (Ex VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£4.11 - £23.63 per piece (Ex VAT)

WAS

£4.93 - £28.36 per piece (Inc VAT)

C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC timber is your go-to choice for robust structural applications. C16 and C24 are strength grades; the higher the grade, the better the load bearing quality it has. C16 is normally the grade that...

WAS:

WAS:

WAS

£4.11 - £23.63 per piece (Ex VAT)

WAS

£4.93 - £28.36 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£2.85 - £16.39 per piece (Ex VAT)

WAS

£3.42 - £19.67 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...

WAS:

WAS:

WAS

£2.85 - £16.39 per piece (Ex VAT)

WAS

£3.42 - £19.67 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 150 x 3600mm (6x2)

WAS: each

WAS £28.10

£18.36 each (Inc VAT)

WAS: each

WAS £23.42

£15.30 each (Ex VAT)

Discover the exceptional quality of our C24 Timber Joists, expertly crafted to support your decking projects with strength and reliability. Made from premium UC4 treated Redwood, these joists are ideal for outdoor use and can withstand direct ground...

WAS: each

WAS £28.10

£18.36 each (Inc VAT)

WAS: each

WAS £23.42

£15.30 each (Ex VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 100 x 4800mm (4x2)

WAS: each

WAS £24.96

£16.32 each (Inc VAT)

WAS: each

WAS £20.80

£13.60 each (Ex VAT)

Elevate your outdoor projects with C24 Treated Timber Decking Joists, meticulously crafted from premium Redwood and UC4 treated for exceptional ground contact durability. These joists are engineered from dense Scandinavian softwood, offering...

WAS: each

WAS £24.96

£16.32 each (Inc VAT)

WAS: each

WAS £20.80

£13.60 each (Ex VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£3.80 - £21.85 per piece (Ex VAT)

WAS

£4.56 - £26.22 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...

WAS:

WAS:

WAS

£3.80 - £21.85 per piece (Ex VAT)

WAS

£4.56 - £26.22 per piece (Inc VAT)
C24 Timber UC2 Treated Kiln Dried Regularised PEFC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£3.08 - £17.72 per piece (Ex VAT)

WAS

£3.70 - £21.26 per piece (Inc VAT)

Main usage is for vertical non-load bearing stud positions. Due to the size of this 3x2 C24 graded timber carcassing, we recommended using it purely for vertical non-load bearing stud positions. C16 and C24 are strength grades; the higher the grade, the...

WAS:

WAS:

WAS

£3.08 - £17.72 per piece (Ex VAT)

WAS

£3.70 - £21.26 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 150mm (6x2)

WAS:

WAS:

WAS

£5.70 - £32.78 per piece (Ex VAT)

WAS

£6.84 - £39.34 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...

WAS:

WAS:

WAS

£5.70 - £32.78 per piece (Ex VAT)

WAS

£6.84 - £39.34 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Joists UC4 Treated Redwood 47 x 150 x 4800mm (6x2)

WAS: each

WAS £37.46

£24.49 each (Inc VAT)

WAS: each

WAS £31.22

£20.41 each (Ex VAT)

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,...

WAS: each

WAS £37.46

£24.49 each (Inc VAT)

WAS: each

WAS £31.22

£20.41 each (Ex VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 150mm (6x2)

WAS:

WAS:

WAS

£6.16 - £35.44 per piece (Ex VAT)

WAS

£7.39 - £42.53 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...

WAS:

WAS:

WAS

£6.16 - £35.44 per piece (Ex VAT)

WAS

£7.39 - £42.53 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£4.11 - £23.63 per piece (Ex VAT)

WAS

£4.93 - £28.36 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...

WAS:

WAS:

WAS

£4.11 - £23.63 per piece (Ex VAT)

WAS

£4.93 - £28.36 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 125mm (5x2)

WAS:

WAS:

WAS

£5.14 - £29.53 per piece (Ex VAT)

WAS

£6.17 - £35.44 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...

WAS:

WAS:

WAS

£5.14 - £29.53 per piece (Ex VAT)

WAS

£6.17 - £35.44 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 200mm (8x2)

WAS:

WAS:

WAS

£8.22 - £47.26 per piece (Ex VAT)

WAS

£9.86 - £56.71 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...

WAS:

WAS:

WAS

£8.22 - £47.26 per piece (Ex VAT)

WAS

£9.86 - £56.71 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 175mm (7x2)

WAS:

WAS:

WAS

£6.65 - £38.24 per piece (Ex VAT)

WAS

£7.98 - £45.89 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...

WAS:

WAS:

WAS

£6.65 - £38.24 per piece (Ex VAT)

WAS

£7.98 - £45.89 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Decking Joists UC4 Treated Green Kiln Dried Regularised Redwood PEFC 47 x 150mm (6x2)

WAS: per piece

WAS £8.36

£5.11 per piece (Inc VAT)

WAS: per piece

WAS £6.97

£4.26 per piece (Ex 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...

WAS: per piece

WAS £8.36

£5.11 per piece (Inc VAT)

WAS: per piece

WAS £6.97

£4.26 per piece (Ex VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 125mm (5x2)

WAS:

WAS:

WAS

£4.75 - £27.32 per piece (Ex VAT)

WAS

£5.70 - £32.78 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...

WAS:

WAS:

WAS

£4.75 - £27.32 per piece (Ex VAT)

WAS

£5.70 - £32.78 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 225mm (9x2)

WAS:

WAS:

WAS

£8.55 - £49.17 per piece (Ex VAT)

WAS

£10.26 - £59.00 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...

WAS:

WAS:

WAS

£8.55 - £49.17 per piece (Ex VAT)

WAS

£10.26 - £59.00 per piece (Inc VAT)
Special Offer

Special Offer

C24 Timber Decking Joists UC4 Treated Green Kiln Dried Regularised Redwood PEFC 47 x 100mm (4x2)

WAS: per piece

WAS £5.58

£3.42 per piece (Inc VAT)

WAS: per piece

WAS £4.65

£2.85 per piece (Ex VAT)

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...

WAS: per piece

WAS £5.58

£3.42 per piece (Inc VAT)

WAS: per piece

WAS £4.65

£2.85 per piece (Ex VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 175mm (7x2)

WAS:

WAS:

WAS

£7.19 - £41.35 per piece (Ex VAT)

WAS

£8.63 - £49.62 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...

WAS:

WAS:

WAS

£7.19 - £41.35 per piece (Ex VAT)

WAS

£8.63 - £49.62 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised FSC 47 x 100mm (4x2)

WAS:

WAS:

WAS

£3.80 - £21.85 per piece (Ex VAT)

WAS

£4.56 - £26.22 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...

WAS:

WAS:

WAS

£3.80 - £21.85 per piece (Ex VAT)

WAS

£4.56 - £26.22 per piece (Inc VAT)
C24 Timber UC2 Treated Kiln Dried Regularised FSC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£3.08 - £17.72 per piece (Ex VAT)

WAS

£3.70 - £21.26 per piece (Inc VAT)

Main usage is for vertical non-load bearing stud positions. 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...

WAS:

WAS:

WAS

£3.08 - £17.72 per piece (Ex VAT)

WAS

£3.70 - £21.26 per piece (Inc VAT)
C24 Timber Joists Untreated Kiln Dried Regularised PEFC 47 x 200mm (8x2)

WAS:

WAS:

WAS

£7.60 - £43.70 per piece (Ex VAT)

WAS

£9.12 - £52.44 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...

WAS:

WAS:

WAS

£7.60 - £43.70 per piece (Ex VAT)

WAS

£9.12 - £52.44 per piece (Inc VAT)
C24 Timber Untreated Kiln Dried Regularised FSC 47 x 75mm (3x2)

WAS:

WAS:

WAS

£2.85 - £16.39 per piece (Ex VAT)

WAS

£3.42 - £19.67 per piece (Inc VAT)

C24 graded 3x2 timber carcassing is typically used for structural timber commonly used for stud walls, roof and floor joists, and structural joinery. However, as this is only 3x2, it's main usage is for vertical non-load bearing stud positions. C16 and...

WAS:

WAS:

WAS

£2.85 - £16.39 per piece (Ex VAT)

WAS

£3.42 - £19.67 per piece (Inc VAT)
C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 75 x 100mm (4x3)

WAS:

WAS:

WAS

£6.92 - £39.80 per piece (Ex VAT)

WAS

£8.30 - £47.76 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...

WAS:

WAS:

WAS

£6.92 - £39.80 per piece (Ex VAT)

WAS

£8.30 - £47.76 per piece (Inc VAT)

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Our range of C24 timber is designed for projects that need extra strength. This high-grade timber is perfect for load-bearing applications, large spans, and structural work. Every piece of timber C24 is kiln-dried for stability and precision-cut for accuracy.

What is C24 timber?

Many people ask, “what is C24 timber?” C24 is a structural strength grade that offers greater load capacity and reliability than C16. It’s the ideal choice for roofs, floors, and heavy-duty framing. If your project requires superior performance, choose C24 timber.

C24 timber sizes

We stock a wide range of C24 timber sizes to suit any build. Popular dimensions include:

4x2 (approx. 47mm x 100mm)
6x2 (approx. 47mm x 150mm)
8x2 (approx. 47mm x 200mm)

Whether you need short lengths or full beams, our range has you covered.

C16 vs C24 timber

A common question is C16 vs C24 timber. Both are structural grades, but C24 is stronger and can handle higher loads and longer spans. This makes it the preferred choice for demanding projects like decking, roofs, or heavy flooring.

C24 treated timber for outdoor use

For added protection, choose C24 treated timber. It’s pressure-treated to resist rot, decay, and insect attack, making it perfect for outdoor structures or areas exposed to moisture.

Order your C24 timber today

Shop our range of C24 timber in sizes such as 4x2, 6x2, and 8x2 for strength-critical projects. Reliable, durable, and built to last – C24 is the ultimate choice for structural work.