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Joists

Discover Howarth Timber's high-quality range of joists for strong, reliable support in floors, roofs, and outdoor builds. Ideal for use in both interior and exterior projects, they’re commonly paired with joist hangers for secure joist to joist connections.

Perfect for structural work and garden projects alike, the Howarth Timber range of timber joists is a great fit for decking and joists, offering long-lasting performance you can trust.

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  • Special Offer
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    Special Offer

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

    £22.90 - £65.83 per piece (Ex VAT)
    £27.48 - £79.00 per piece (Inc VAT)
    Crafted for durability and strength, our C24 Timber Joists UC4 Treated Redwood 47 x 100mm x 3.6m are the ideal choice for your outdoor decking projects. These joists are UC4 treated, ensuring they...
    £22.90 - £65.83 per piece (Ex VAT)
    £27.48 - £79.00 per piece (Inc VAT)
  • Special Offer
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    Special Offer

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

    £30.53 - £87.77 per piece (Ex VAT)
    £36.64 - £105.32 per piece (Inc 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...
    £30.53 - £87.77 per piece (Ex VAT)
    £36.64 - £105.32 per piece (Inc VAT)
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    C16 Timber Joists UC3u Treated Kiln Dried Regularised FSC 47 x 150mm (6x2)

    £12.26 - £35.23 per piece (Ex VAT)
    £14.71 - £42.28 per piece (Inc VAT)
    Transform your outdoor spaces with our Timber Floor Joist, designed specifically for external use, making them perfect for decking joists. These robust timber joists are your go-to solution for...
    £12.26 - £35.23 per piece (Ex VAT)
    £14.71 - £42.28 per piece (Inc VAT)
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    ArborJoist Composite Decking Joists Sub-Frame Recycled Plastic 50 x 50 x 3000mm (2x2)

    The ArborJoist Recycled Plastic Sub-Frame system provides a high quality, high performance substructure, and a long-lasting and durable alternative to timber. As it is made from solid recycled...
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    ArborJoist Composite Decking Joists Sub-Frame Recycled Plastic 125 x 50 x 3000mm (5x2)

    The ArborJoist Recycled Plastic Sub-Frame system provides a high quality, high performance substructure, and a long-lasting and durable alternative to timber.As it is made from solid recycled plastic...

Timber Joists

Howarth Timber's high-quality range of timber joists is designed to provide strong, reliable support for a wide variety of building projects. From timber flooring joists to durable floor timbers for decking and structural work, you’ll find everything you need to create a safe and long-lasting build.

Whether you’re working on a new floor, roof, or outdoor structure, our selection of timber floor joists ensures stability and performance you can trust. We also offer a variety of timber joist sizes to suit different applications, making it easy to choose the right fit for your project.

Strong, versatile, and built to last, Howarth Timber timber joists are the perfect choice for both professional builders and DIY projects.