TIMBER TREATMENTS

In the following section, you'll discover a comprehensive overview of the various timber treatments and their applications they are intended for in New Zealand. Timber is a versatile material widely used in construction, retaining walls, decking, fencing and other outdoor projects. Its longevity and performance is determined by its different treatment processes.

Timber treatment involves pressurising chemical preservatives into the wood in order to safeguard it against decay and insect attacks. Therefore, the correct timber treatment is crucial for enhancing the material's durability and extending its lifespan. In essence, a higher degree of treatment correlates with increased resilience, ensuring that the timber can withstand environmental challenges and maintain its functionality over time.

H1.2 -

H1.2 is primarily intended for structural applications indoors, with its main functions being wall framing, as well as for floors and ceilings.

H3.2 -

H3.2 Is intended for above ground use where protection from the elements and insect attack is needed. It can be categorized as either structural or non-structural, depending on its grade. Uses include cladding, decking, palings, handrails, joists and bearers, which are essential for constructing decks and walkways.

H4 -

H4 Treated timber is designed for ground contact and situations with a high decay hazard and insect attacks; it's not typically recommended for continuous, submerged water contact. H4 timber products include items like posts, pergolas, fences, and garden edging.

H5 -

H5 Is intended for in ground contact and where it will be exposed to severe decay hazards. H5 is used for house piles, retaining walls, and structural components in water logged areas.

H6 -

H6 is intended for marine and coastal applications where the timber is submerged in saltwater or estuarine environments, making it ideal for saltwater wharf pilings and marinas.