Call Us


Composite Decking  |  Technical Details  |  Colours and Finishes  |  Accessories  |  Galleries  |  Prices


Composite Decking Accessories


Laying decking boards using joist shoes


How to lay recycled plastic decking



The decking joists, made of our 100% recycled plastic “timber”, is completely impervious to water. Therefore it is an ideal choice for supporting decking in wetlands, boardwalks, dipping platforms, fishing platforms, jetties and other difficult and wet areas like roof top terraces.

Advantages of our Subframe decking joists include:

  • Easy to install
  • Meets eco-requirements of build specifications
  • Better than a timber sub-frame – will not rot when wet, no twisting, warping, knots or splintering.
  • Works perfectly with Balcony Systems Composite Decking
  • Durable and everlasting
  • Made from 100% Recycled plastic waste and can be re-recycled
  • Available in a range of profiles and colours


Our plastic subframe timber boards measure 125x50x3000mm. The decking joists are composed of a poly-olefin combination that is UV stabilized and eco-friendly because it won’t leach chemicals or tannins.


Once installed, the subframe is completely maintenance free (providing the correct screws were used) and no amount of water, mold, bacteria or elements will break down this rugged material. Wood generally needs replacing every 7 years in our damp climate. Close to water, the estimated number of years can be decreased, which will greatly increase the costs. 

Since the installation costs of decking joists is about the same as that of lumber, maybe less as it is faster to use, the investment in everlasting decking joists is obviously a good one.

Most people build subframes out of timber. When installing our composite decking, the decking material will need removing every few years to replace or repair the wooden decking supports underneath. Therefore, we highly recommend going to the extra but reasonable expense of using our recycled plastic decking supports in order to construct a more stable, safe and economical deck.

For more information on your state-of-the-art decking supports, please call our technical team at 01342 410411.


Request Brochure >

Grand Designs Live



  • Glass Fencing Ideas

    From traditional handrail glass fence panels to barely-there frameless designs, glass fencing complements a broad range of architectural sty...

  • Gold Certification and Hybrid® Glass Balustrading

    Following its Gold accreditation, Balcony Systems was quick to secure the contract to supply a Hybrid® Glass balustrading system selected fo...

  • Glass Balustrades Compliance Checklist

    Six important points to check when purchasing a glass balustrade. We hope it will be of use in sourcing your balustrading product of choice....

  • Self-Cleaning Glass Windows

    Watermarks, dust and grime really show up in the sunshine. Instead of enjoying your day, you end up calling a window cleaner or getting out ...

  • Balcony Systems

    Balcony Systems create glass balustrades along with handrails and sometimes, support posts. Our glass balustrades are supported at the top a...

  • Cool Composite Decking Accessories

    Our cool composite decking accessories can save you an enormous amount of time when you plan everything out in advance! We have really thoug...

  • RSVP - Balconette's Open House Event

    We’d like you to join us for our biggest ever Open House event on Friday 28th and Saturday 29th September 2018 from 10am – 4pm at our HQ in ...

  • Choosing Composite Decking

    So you’re planning on adding composite decking to your home? Great plan! You’ve probably done the research between wood and composite deckin...

  • Glass Balustrades and Glass Balconies

    Glass balcony systems put Balcony Systems on the map! We are very open with our costs as we believe this is one of our advantages too. A “gl...

  • Balustrading and wind Loads

    Designing balustrades to meet wind load requirements is a crucial part of our job. Now, in BS6180:2011 it is required that wind loads are in...

Money back guarantee Ten year Mastercard and Visa Paypal Constructionline Gold Member SMAS CQMS CHAS

Fast Track