This old style gothic fencing in white was primed and 2 coats of exterior paint applied. Our suggestion is to install vinyl white fencing material because of the wet weather in Washington. No matter how you prepare the wood it will peel and crack. Six foot tall privacy Cedar fencing with caps installed using galvanized ring shank nails for a long a lasting fence. When installing a wood fence always butt the fencing tight; this will allow for shrinkage in the wood. There are wood preservatives available at you local hardware store. The one we use is Linseed oil this will penetrate the wood and help with shrinkage and the wood will last for years.