Copper Azole is wood preservation with non-arsenic based and effective against termites and fungal decay both above ground (AG) and in-ground (GC). The preservation formulation has been in commercial use since 1992 and is now used for treated wood in 15 countries. It is now the most effective and successful alternative to CCA treated wood. It is an ideal choice for housing, resorts (include sea-side), garden structures, patios, decks, playground equipments, outdoor furniture, etc.
Though the compositions of the preservatives differ, many of the characteristics of Natura DuraPine treated wood are very similar to those of traditional treated wood. For instance, Natura DuraWood treated wood has an initial greenish colour. It is produced by pressure treatment. IT is odourless and clean to the touch. It undergoes a chemical fixation reaction, which bonds the preservative to the wood.
As for longevity, the service life of Natura DuraWood treated wood has been proven through actual use around the world. In providing this extended life to wood, Natura DuraWood treated wood reduces demands of forest resources.
Most of the differences between wood treated with copper azole and standard treated wood involve the chemistry of their preservative solutions. Preservative ingredients are copper and azole. Traditional treated wood uses CCA-copper, chromium and arsenate. Treating procedures, retention levels and warranties nearly identical. The United States Environmental Protection Agency (EPA) classifies CCA as restricted use pesticide, but the preservative in Natura DuraWood is not restricted.
Natura DuraWood initially greenish will turns to a honey brown colour when exposure to sunlight and can last for an extended period before slowly fading to gray. It can be painted or stained if desired and, to avoid premature moisture damage, will benefit from periodic water repellent coatings for best appearance.
Recommended Hardware
Hot-dipped galvanized fasteners (meeting ASTM A153) and connectors (ASTM A653 Class G185 sheet), or better, are recommended for protection against moisture often present where treated wood is usually used. Aluminium should not be used in direct contact with this wood.
