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In order to install a metal roof over an existing shingled roof, is it best to have the roof "stripped" with strips of wood, or just place metal right on top of shingles? 26 Mar 2015 Homeowners are increasingly turning to metal as a roofing solution. That said, many standing seam roofs are installed over old shingles along matter how much instruction I've given workers on how to walk on the roof, 28 Mar 2012 3 Dec 2012 The purlins give the installer a flat surface to install the metal roofing panels down to without the irregularities a shingle provides. The metal will be attached to at least 3/4" purlin and 1/2" plywood instead of just 1/2" plywood, which should make the overall roofing system stronger. Follow a few simple guidelines and your roof will look appealing as well as last Still, if you decide to install a steel roof over old shingles, there are five things 18 Oct 2012 Step by step instructions and videos on how to install metal roofing over an existing shingle roof. this provides the DIYer or a customer seeking When installing a metal roof over shingles, homeowners can opt for either a steel shingle system or a standing seam steel system. Both are expensive but last aYes, you can install a new metal roof over the top of an existing asphalt shingle roof provided there are not too many layers. If you want to install steel over asphalt, your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common (and more expensive) standing seam steel. In a standing seam roof, long, single panels run vertically all the way from the eave to the ridge. 16 Jan 2019 Metal Roofing Can Be Installed Over Existing Roofs. Metal roofs can be installed over your existing roof without tearing off shingles, provided local building codes allow it. While shingle removal is the preferred route, tear-off is messy and raises the cost of the job.