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Composite Decking Joists
Composite Decking Joists
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Description
Description
Composite Decking Joists
Our Composite Decking Joists provide a strong and sturdy base for your Composite Decking installation. These joists offer the same low maintenance and responsibly sourced materials as the rest of the parts of our Composite Decking systems and its waterproof properties make them ideal for any outdoor area. These joists are available in 2.9m and 3.6m but can easily be cut and resized to fit your requirements.
Size: 24mm x 40mm
Product Details
Product Details
| Length | 2.9 meter (2900mm)|3.6 meter (12ft) |
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Frequently Asked Questions
What are composite joists used for?
They form the subframe for composite decking, supporting the boards above ground level.
Are composite joists better than timber?
Yes, they won’t rot, warp or splinter and last much longer than timber alternatives.
What are they made from?
Made from a blend of recycled plastics and wood fibres for strength and stability.
Can they be used on uneven ground?
Yes, they can be installed with adjustable supports or pedestals to level surfaces.
Do they need treating?
No treatment is required – they’re fully weatherproof and maintenance-free.
What spacing is recommended?
Typically spaced at 400mm centres, depending on board thickness and span.
Can they be cut to length?
Yes, easily cut with standard saws or circular saws for custom lengths.
Are they eco-friendly?
Yes, made from 95% recycled materials and fully recyclable at end of life.
Can they support heavy loads?
Yes, designed to bear standard residential decking loads when installed properly.
Do they expand or contract?
They expand slightly with heat, so gaps must be left for thermal movement.