Generally, the span of joist is required to be no more than 30-35cm when installing the WPC decking, and at least 3 joists are used for a single deck. The span of the joist depends on the thickness of the deck. In case of hollow deck, the size of the wall thickness should also be considered. The thickness of the WPC decking and the wall thickness directly affect the span of the joist. Please strictly follow our regulations when installing.
WPC Joist/WPC Keel
Hollow Joist
Model No. TN-18A
Size: 59mmx40mm
Hollow Joist
Model No. TN-05B
Size: 40mmx30mm
Solid Joist
Model No. TN-05A
Size: 40mmx25mm
Hollow Joist
Model No. DY-05D
Size: 50mmx25mm
Hollow Joist
Model No. TN-05D
Size: 40mmx20mm
Hollow Joist
Model No. TN-05C
Size: 61mmx41mm
