All our wooden products for the garden are treated with the method of vacuum pressure impregnation and tinting. According to HC4 class. 20-year anti-rot guarantee!
What is vacuum pressure impregnation? – Vacuum pressure impregnation is a method by which all the air is extracted from the wood in a special chamber, and under very high pressure the wood is filled with protective chemistry. Please do not confuse the vacuum pressure impregnation method with the conventional soaking method!