Details About Our Decking Composite JoistsOur composite joists must be used in conjunction with a hard concrete base to build a supporting substructure suitable for most domestic decking areas. Composite joists can be used with our composite wall cladding range.
Each joist measures 4000mm x 50mm x 30mm and is only available in charcoal colour.
Each joist should be spaced no more than a maximum of 400m apart.
As a rule of thumb we recommend purchasing 1 joist per square metre of decking.