Heavy Duty Box Section Joist
FULL COMPOSITE JOIST WITH A 15MM OUTER CORE TO GIVE A STRONG FIXING.
DuoJoist is a composite joist made from a wood plastic composite, made from 60% natural wood fibres and 30% recycled HDPE plastic combined with bonding agents and tints to create an environmentally sustainable product that is not only great to look at but solves many problems linked with traditional timber products, like rot, hazardous surfaces and colour fading.
Designed with a 15mm thick outer wall, it allows for a strong fixing of the deck boards on top, finishing 100x50mm it is a robust and sturdy joist perfect for any composite deck. We suggest a maximum of 350mm centres between joists