Visit us today for the widest range of Structural Timber products. Using the TRU-CORE ® Process (Permethrin-based). The treatment process and the management thereof is done strictly in accordance with the SANS 1288:2013 specifications. sawn and round wood, plywood, particleboard etc. Low toxicity, highly effective timber treatment that protects against mould and rot when building inside a house. H4 Treated Pine Timber Pine timber with an H4 level of treatment has the ability to withstand a wider variety of environmental conditions than H3 treated lumber. H3 Clear Azole Timber Treatment Wood Preservation. The treatment changes with different applications. Typical examples include joists for bearers for decks, pergola beams, fence rails, fence palings and trellis. In April 2011, B2/AS1 Amendment 7 introduced new tables for radiata pine and Douglas fir to replace those in NZS 3602:2003, an Acceptable Solution for choosing timber and wood-based products for use in buildings. Note that a higher treatment … H3.1 LOSP treatment was no longer permitted for framing timber. H3 – The next level of treatment, H3 is suitable for use in applications where the wood is kept off the ground and exposed to weather conditions and periodic moderate wetting. Hazard Class (H3): Timber destined for exterior use above the ground (no ground contact), i.e. CCA H3.2/H4 Timber protection against rain (H3.2) … For structural wood products used in above ground but exposed to weather and moisture treatment to H3.2 is required to ensure long life and trouble free service. The list below covers only those preservatives that are used to treat wood to the specifications in Australian Standard AS/NZS 1604* Specification for preservative treatment. The chemicals need not penetrate to the same depth, nor need the solution be the same. Most LOSP treated pine must be painted to maintain its warranty (which is half as long as CCA). H3 Clear Azole Timber Treatment Solution is highly durable and robust against all termites, decays and rots in harsh climates, making this ideal for outdoor above-ground use. : fencing slats, garden furniture, sun deck components, balustrades, walkways, trellis, etc. Placing H3 treated timber on or in the ground could subject it to conditions that will cause degradation. Treated Pine is timber that has been permeated with a chemical solution, giving it a long-term resistance to decay, insects, and other deteriorating factors. H3 pine timber is perfect for verandas, cladding, and other above ground purposes. A piece of timber to be used in the roof need not be treated with the same amount of chemical as a piece of timber being used for a jetty. Treatment of Pine Timber. There are five standards in this series dealing with different wood products e.g. Preservative treatment makes the timber a more viable option for building, construction, and engineering applications. 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