In Northwestern Kentucky (Owensboro), I am designing a large estate using Cedar Shingles on the exterior walls with a fieldstone base and flagstone Verandas.(Shingle Style influenced by firm of Robert A.M. Stern Architects.) Any recommendations for these shingles? Stains? What about the life of Shingles, if installed properly? Plus, I am creating a watertable with shingles. What's the ruling on layers or sealants here?