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Cedar Shingle Preservatives
Wood preservatives are fluid materials that penetrate into the wood, leaving little or no film on the surface. They are usually very effective at resisting rot and decay and in discouraging the growth of molds and other vegetation on the surface.
Western Red Cedar is very resistant to decay so preservative treatments are required only under extreme conditions. Since they contain minimal pigment or surface film, preservatives offer limited protection against natural color change due to weathering and do not protect against wear and abrasion like stains and paints.