What is J2 timber class?

J2 timber class is a classification used in Australia to denote a specific grade of structural timber that has been treated to be durable and resistant to decay and insect attack. This class is typically used for various structural applications, including framing and decking, where moderate to high strength and durability are required. J2 timber is often sourced from species that are known for their strength properties, making it suitable for construction in different environments.