Never bought fence panels before but ours have started to fall apart from rot. We only need three 6 x 4. Having a quick look at B&Q I prefer the traditional lap panel ones. I hate the orange dipped ones, B&Q seem to do a pressure treated one that isn't orange and sounds like it will last longer, is this the way to go? In terms of treating them, I'd love to leave them to go that lovely silvery weathered colour, but can you give them a clear treatment that will allow this to still happen? How long does it take?