It could be fair dependant upon the sort of metal roofing procedure becoming installed, The form within your roof deck, and how many levels of shingles there are now over the roof. In most cases, you are able to do it with metal shingles, if there is just one layer https://residentialrubberroofinst80134.bloggosite.com/42516289/5-tips-about-residential-flat-roof-installation-you-can-use-today