How do I am planning some home renovation for summer, the facias and barge boards have rotted at all the corners. This is due to the guttering having dropped at the ends, losing the slope and channeling the water to the corners. Even with regular cleaning the gutters build up so much **** over winter as we back onto a forest and with nesting birds that the weight has been to much for the UV degraded clips. I feel confident to undertake the work myself as I have covered traditional roofing in college and enjoyed it as a subject. So barge boards facias and soffits should be a doddle right ? There is a small lean to at the front over what used to be the garage and I will get to grips with this before I order all materials and get scaffolders in. My question is should I repair timber and then clad with UPVC or go for one of the systems that would completly replace the existing timber. Also any tips for fitting UPVC as I have no experience with this product, ie / pilot holes, should they be slightly oversised to allow for expansion? Or is UPVC stable. If anyone could provide some enlightening links or share their experience I would be grateful.