The Chromated Copper Arsenate (CCA) is a water soluble preservative used to protect in the long term timber used in outdoor, in contact with soil or marine water; it works as a powerful insecticide and fungicide, avoiding damage from fungi, mold, termites, insects and other parasites.
Wood is an organic material, and as such is susceptible to weather, environmental and biological agents that cause deterioration and rot. For this reason, timber requires the impregnation of CCA preservatives, which provides a longer durability and protects it.
The application of this treatment gives a longer useful life to timber, protecting it for decades, which also translates as a positive impact in the environment as there is no need for constant change of the wood. Rio Claro reassures the quality and the impregnation degree of the treated wood through internal controls and visual inspection.
At the same time, we work with our own equipment in order to measure salt concentration in the solution used for the impregnation process. Once this process is finished, 20 samples of each load are chosen for analysis, which ensures the penetration and retention of salts.
It is worth mentioning that before impregnating the wood, we perform a moisture content control using a xylohygrometer (instrument that measures moisture content) where it is compared with the weight of the product to be impregnated (operator experience), the lighter the drier, te better impregnation. To ensure good impregnation, wood must not exceed 25% moisture content.
The impregnation process consists of 6 stages: