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Posts

Stop wasting time on timber that’s destined to rot. Our composite posts are the ideal foundation for any professional decking project. Made from 100% recycled high-density plastic, these decking subframe posts are completely resistant to moisture, UV rays, and ground contact decay. Our Arena range provides a solid, maintenance-free structure that outlasts traditional wood every time. Complete your projects correctly, reduce callbacks, and offer your clients a foundation backed by a 25-year guarantee.

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Build to Last: The Professional Advantage of Composite Posts

For a tradesperson, your reputation is only as strong as the frame beneath the boards. You can install the best-looking composite decking, but if the subframe fails, the entire job fails. That’s why switching to subframe posts made from recycled composite materials is an obvious choice.

Unlike treated timber, which can trap moisture between the joists and the posts, our composite posts are 100% weatherproof. They don’t require sanding, sealing, or chemical treatments; just cut them to size and install.

 

Technical Specs & Installation Tips for the Trade

We understand that you need products that fit seamlessly into your workflow. Our Arena subframe posts are designed for efficiency:

  • Subframe Compatibility: Designed to pair perfectly with our Arena composite joists and structural wood screws.
  • Post Spacing: For a standard build, we recommend a maximum post spacing of 1000mm to ensure zero bounce.
  • Height Guidelines: 
    • Use 80mm x 80mm posts for decks up to 500mm above ground level.
    •  Upgrade to 100mm x 100mm posts for any height over 500mm to ensure maximum structural integrity.
  • Easy Calculation: As a rule of thumb, use one post for every 2.25m to 3.3m of subframe length, depending on deck height.

 

Why Source Your Composite Subframe from LB Supplies?

We don’t just sell components; we provide the foundation for your outdoor projects. Our composite posts come with a 25-year manufacturer’s guarantee, offering your customers peace of mind and giving you a reliable “fit and forget” solution.

With stock ready for delivery across the UK, we help you keep your projects on schedule. Upgrade your next build with subframe posts that are as modern as the decking it supports.