The link below will take you to a great wood preserver and you should saturate any posts in it, The only real alternative is a concrete posts but you may struggle to fix the timber to it. See our project on fixing to masonry to get the best idea of how to do this.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!