For two years we have been testing a natural cedar based product called Cedarshield Petri-Wood, also now known as Permatek in Canada and I am wondering if anyone else in timber sciences or otherwise has also tested these products. In particular I wish to compare results on what appears to be highly extended longevity for the treated timber, any apparent changes noted during simulated aging and extreme weather conditions and finally, on why these products appear to permanently keep the timber impervious to moisture and water ingress. All information is appreciated. Thankx. D. Hyde
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