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4x1 Timber

Explore our range of 4x1 timber, perfect for joinery, cladding and general construction. Whether you’re tackling interior finishes or outdoor projects, treated timber provides strength, stability, and a smooth finish for easy workability.

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    Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22 x 100mm (4x1)

    £1.90 - £10.93 per piece (Ex VAT)
    £2.28 - £13.12 per piece (Inc VAT)
    Discover the robustness and sustainability of our Rough Sawn Timber UC3u Treated Green Unseasoned FSC 22x100mm planks, perfect for supporting your outdoor projects. Crafted from responsibly sourced spruce/pine and fir, this timber upholds the full chain...
    £1.90 - £10.93 per piece (Ex VAT)
    £2.28 - £13.12 per piece (Inc VAT)
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    C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC 47 x 100mm (4x1)

    £4.15 - £23.86 per piece (Ex VAT)
    £4.98 - £28.63 per piece (Inc VAT)
    C24 Timber Joists UC2 Treated Kiln Dried Regularised PEFC timber is your go-to choice for robust structural applications. This timber is ideal for constructing stud walls, roof and floor joists, and other structural joinery, thanks to its superior C24...
    £4.15 - £23.86 per piece (Ex VAT)
    £4.98 - £28.63 per piece (Inc VAT)
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    C24 Timber Joists Kiln Dried Regularised PEFC 44 x 95mm (4x1)

    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 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,...
    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 per piece (Inc VAT)
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    C24 Timber Joists UC4 Treated Redwood 47 x 100 x 4800mm (4x1)

    Elevate your outdoor projects with C24 Timber Joists, meticulously crafted from premium Redwood and UC4 treated for exceptional ground contact durability. These joists are engineered from dense Scandinavian softwood, offering unrivalled strength and...
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    Rough Sawn Timber Unseasoned FSC 22 x 100mm (4x1)

    £1.55 - £8.94 per piece (Ex VAT)
    £1.86 - £10.73 per piece (Inc VAT)
    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...
    £1.55 - £8.94 per piece (Ex VAT)
    £1.86 - £10.73 per piece (Inc VAT)
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    C24 Timber Joists UC2 Treated Kiln Dried Regularised FSC 44 x 95mm (4x1)

    £4.15 - £23.86 per piece (Ex VAT)
    £4.98 - £28.63 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...
    £4.15 - £23.86 per piece (Ex VAT)
    £4.98 - £28.63 per piece (Inc VAT)
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    C16 Timber Joists Kiln Dried Regularised FSC 44 x 95mm (4x1)

    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 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...
    £3.84 - £22.08 per piece (Ex VAT)
    £4.61 - £26.50 per piece (Inc VAT)

You can trust our high-quality treated timber for both professional builds and DIY projects, especially if the projects will be exposed to moisture or outdoor conditions. This timber is pressure-treated and designed to resist rot, decay and insect damage, making it ideal for long-lasting performance.

This range of 4x1 tanalised timber is ideal for lightweight construction and finishing work. Commonly used for cladding, shelving, and decorative projects, the 4x1 size offers flexibility for both DIY and trade professionals.

Why choose 4x1 timber?

This size is a great choice for projects where a thinner, lighter timber is needed, including:

  • Trim
  • Boxing
  • Fascia boards

    • Its smooth finish makes it easy to paint, stain, or varnish for a professional look.

    Treated for extra protection

    Pressure-treated to resist rot and decay, our treated timber is ideal for cladding, fencing and other exterior applications including damp environments. It provides durability without compromising on appearance.

    Sizes and options

    We stock 4x1 timber in a variety of lengths to suit different projects. Whether you’re creating shelving, boxing in pipework, or adding finishing details to a build, you’ll find the perfect size in our range.

    Shop our selection of 4x1 timber for reliable, high-quality materials at competitive prices.