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6x3 Timber

Our robust 6x3 timber is perfect for heavy-duty construction, offering excellent strength for structural frameworks, beams, and load-bearing applications. Whether you’re working on a large-scale build or a demanding DIY project, timber 6x3 provides the durability and reliability you need.

Ideal for both internal and external use, it's a trusted choice for professional tradespeople and home renovators alike.

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  • C24%2070x145%20Main.jpg.jpeg C24%2070x145%20Top.jpg.jpeg

    C16 Timber Joists Untreated Kiln Dried Regularised FSC 72 x 145mm (6x3)

    £9.41 - £54.13 per piece (Ex VAT)
    £11.29 - £64.96 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...
    £9.41 - £54.13 per piece (Ex VAT)
    £11.29 - £64.96 per piece (Inc VAT)
  • C24%2070x145%20Treated%20Main.jpg.jpeg C24%2070x145%20Treated%20Top.jpg.jpeg

    C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 72 x 145mm (6x3)

    £10.25 - £58.95 per piece (Ex VAT)
    £12.30 - £70.74 per piece (Inc VAT)
    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. Regularised timber has...
    £10.25 - £58.95 per piece (Ex VAT)
    £12.30 - £70.74 per piece (Inc VAT)
  • C24%2070x145%20Main.jpg.jpeg C24%2070x145%20Top.jpg.jpeg

    C16 Timber Joists Kiln Dried Regularised FSC 70 x 145mm (6x3)

    £11.03 - £63.40 per piece (Ex VAT)
    £13.24 - £76.08 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...
    £11.03 - £63.40 per piece (Ex VAT)
    £13.24 - £76.08 per piece (Inc VAT)

Why choose 6x3 timber?

6x3 timber is designed for situations where extra width and strength are required. Common uses include:

  • Roof joists and rafters
  • Flooring and decking supports
  • Large structural frames

    • 6x3 treated timber for outdoor use

    For projects exposed to moisture or outdoor conditions, choose from our range of 6x3 treated timber which is pressure-treated to resist rot, decay, and insect damage, ensuring long-lasting durability for garden structures, decking or outdoor frames.

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