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According to NRCS VC 9092, The Compulsory Specification for Preservative Treated Timber, any preservative treated timber product claiming to be preservative treated must be branded as specified in the relevant SANS product standards. An important part of the brand is the Hazard Class, which indicates the service conditions to which the product is exposed and the level of treatment or level of protection that must be applied to the wood. The Hazard Classes have been defined as follows…
Tanalised C Pressure Treated Wood has stood the test of the time. Treated with our well known wood preservative Tanalith C (CCA), this treated wood has provided peace of mind for more than seven decades. Applications for Tanalised C pressure tested wood are wide ranging from roof trusses, to thatch roof and lapa poles, to walkways and decking, fencing, agricultural and vineyard posts, trellises and utility poles.
This Guidance Note addresses the importance of the use of properly preservative treated timber in the construction of substructures for timber decks and its compliance with the requirements as stipulated in the Building Regulations and relevant SANS Standards.