Does NeoTimber® composite material expand and contract?

The simple answer is yes. Like all materials, composite balustrades will expand and contract as temperatures fluctuate. The difference is that composite expands and contracts within known parameters. Because the balustrade system has a metal frame and a composite sleeve, the two materials expand and contract at different rates. Because of this, expansion gaps are built into all of our products to allow this thermal expansion to occur without putting undue stresses on them.