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    NOTICE:
    Welcome to UK Oak, the UK's Premier Online Oak source. Orders can be placed and paid for online 7 days per week. All standard delivery options are back to their normal lead times, however, our express deliveries have been extended to 72 hours instead of our standard 24 hours, although, we will still endeavour to dispatch your order(s) as soon as possible.
    All orders will be processed in the order that they are received. Many thanks for your continued custom and support.

    Untreated British Larch-Douglas Fir Decking Joists

    When selecting a material to form the foundation of your deck, it is vital to look for a timber that's hard wearing, that will last the duration of your decking boards and that offers exceptional stability. Here at UK Timber, our British Larch/Douglas Fir Decking Joists meet all of this criteria and will truly last the test of time. 

    We have developed this product to offer a timber decking joist to the market that will give you a foundation for your deck that will last just as long, if not longer, than your decking boards.

    British Larch is one of the most naturally hardy of all domestic softwood species due to its high resin content, making it the perfect material for seriously long lasting deck supports, even in ground contact without treatment!

    These decking joists can be paired beautifully with our own British Larch Decking Boards to keep the same appearance and character of your project throughout, however they are certainly not limited to that species. 

    Available in the following sizes (+/- 3mm):

    • 1200 x 100 x 50mm 
    • 2400 x 100 x 50mm 
    • 3000 x 100 x 50mm
    • 3600 x 100 x 50mm 
    • 4800 x 100 x 50mm
    • 6000 x 100 x 50mm
    • 1200 x 150 x 50mm 
    • 2400 x 150 x 50mm
    • 3000 x 150 x 50mm
    • 3600 x 150 x 50mm
    • 4800 x 150 x 50mm 
    • 6000 x 150 x 50mm
    • 1200 x 200 x 50mm
    • 2400 x 200 x 50mm
    • 3000 x 200 x 50mm
    • 3600 x 200 x 50mm
    • 4800 x 200 x 50mm
    • 6000 x 200 x 50mm

    Please feel free to contact our sales team on 01536 267107 should you require further information.

    Product Options

    BLDJ-1.210050
    Grade: none | Size: 1200 x 100 x 50 | Min Qnty: 1 | Treatment: none
    £4.99 ex VAT
    Qty:
    BLDJ-2.410050
    Grade: none | Size: 2400 x 100 x 50 | Min Qnty: 1 | Treatment: none
    £7.99 ex VAT
    Qty:
    BLDJ-3.010050
    Grade: none | Size: 3000 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £11.99 ex VAT
    Qty:
    BLDJ-3.610050
    Grade: none | Size: 3600 x 100 x 50 | Min Qnty: 1 | Treatment: none
    £14.99 ex VAT
    Qty:
    BLDJ-4.810050
    Grade: none | Size: 4800 x 100 x 50 | Min Qnty: 1 | Treatment: none
    £15.99 ex VAT
    Qty:
    BLDJ-6.010050
    Grade: none | Size: 6000 x 100 x 50 | Min Qnty: 1 | Treatment: none
    £19.99 ex VAT
    Qty:
    BLDJ-1.215050
    Grade: none | Size: 1200 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £5.99 ex VAT
    Qty:
    BLDJ-2.415050
    Grade: none | Size: 2400 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £11.99 ex VAT
    Qty:
    BLDJ-3.015050
    Grade: none | Size: 3000 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £17.99 ex VAT
    Qty:
    BLDJ-3.615050
    Grade: none | Size: 3600 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £21.99 ex VAT
    Qty:
    BLDJ-4.815050
    Grade: none | Size: 4800 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £23.99 ex VAT
    Qty:
    BLDJ-6.015050
    Grade: none | Size: 6000 x 150 x 50 | Min Qnty: 1 | Treatment: none
    £29.99 ex VAT
    Qty:
    BLDJ-1.220050
    Grade: none | Size: 1200 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £8.49 ex VAT
    Qty:
    BLDJ-2.420050
    Grade: none | Size: 2400 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £16.99 ex VAT
    Qty:
    BLDJ-3.020050
    Grade: none | Size: 3000 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £21.49 ex VAT
    Qty:
    BLDJ-3.620050
    Grade: none | Size: 3600 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £25.99 ex VAT
    Qty:
    BLDJ-4.820050
    Grade: none | Size: 4800 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £34.49 ex VAT
    Qty:
    BLDJ-6.020050
    Grade: none | Size: 6000 x 200 x 50 | Min Qnty: 1 | Treatment: none
    £42.99 ex VAT
    Qty:
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