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Joist supports for Composite Decking accessories


Imagine joist supports and pedestals that create a substructure along with a specially-made subframe and joists, that are like Lego® to put together. Installation of a composite deck would be much simpler to install than wood, plus a lot easier to maintain. It might make a DIY project easier to confront than starting from scratch at the builder’s merchants with a rough idea in one’s head.

We have thought it all through and choosing the types and numbers of accessories, like joist supports, needed for your project is not difficult.


Small joist shoe for decking


Balcony Systems’s joist supports, also known as joist shoes, have the following benefits:

  • Perfect for sitting directly on flat roofs, paving, tarmac or concrete
  • Wont pierce through roof membranes
  • Allows air to circulate around joists
  • Fast and easy to install
  • Height adjusting levelers in 3mm increments
  • Quieter than wood
  • 38mm high
  • Strong – each supports up to 250kg
  • Accepts joist widths up to 46mm
  • Creates moisture barrier between underlying surface and joists


Pedestal for Composite Decking


Another joist support we offer is Balcony Systems’s decking pedestals. They are ideal for placing under raised level applications balconies. Their design allows pipe work and other services under the decking and for the joists to breathe and therefore not rot. These joist supports yield the following benefits:

  • Ulta-strong – each supporting up to         400kg
  • Ideal for roof terraces and roof                   gardens
  • Adjustable height – between 35mm         and 220mm
  • Slope adjusters between 1% & 3%
  • Easy fitting for joists – projections on         top to guide installation
  • No fiddly fixings – clip-together design
  • Prevention of point loading – via                   dispersion spines
  • Utilities and pipes can be laid under           deck


 Ring Supports for decking accessories


Where there is very little space between the underlying structure and the decking, the joist supports we recommend are our ring supports. These raise the decking off the supporting surface sufficiently to allow airflow, preventing water from pooling under the boards and rotting out the joists. In addition, our 9 inch high ring supports protect the underlying surface, such as a roofing membrane from being pierced, becoming wet and rotting out the underlying balcony or other structure.

Our joint supports are designed to support joists made of timbre or our Balcony Systems 100% recycled eco-friendly and rot-free plastic joists.

Visit our shop and select the various joist supports you will need for your project!

  • Ulta-strong – each supporting up to 400kg
  • Ideal for roof terraces and roof gardens
  • Adjustable height – between 35mm and 220mm
  • Slope adjusters between 1% & 3%
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