Table 3. Resistance classes categorized against subterranean termite attacks

Resistance class	Termite resistance	WPC weight loss (%)
I	Very resistant	< 3.52
II	Resistant	3.52–7.50
III	Moderately resistant	7.50–10.96
IV	Poorly resistant	10.96–18.94
V	Very poorly resistant	> 18.94

WPC: wood plastic composite.