I bought this direct from a roofing information site to install a metal roof on my barn myself. This was a great video with detailed step by step instructions on how to install a metal roof. It covers everything from layout, tools and materials/ordering to installation, finishing and other things that need to be considered. This is a MUST before metal roofing! I've searched in vain for a variety of YouTube videos with varying degrees of success. Professionally created, this DVD provided step-by-step, start-to-finish instructions in an accessible form that made sense for the budding DIY roofer. Do yourself a favor and save yourself hours of frustration by purchasing this video BEFORE you start your project so you know what to do and save a ton of money installing a metal roof yourself. HIGHLY RECOMMENDED!