Welcome to CN Metals LLC located in the beautiful mountains of Western Maryland. We specialize in metal roofing and siding for residential and commercial buildings. We offer over 20 colors available which come with a 40 year warranty. Standing seam Metal Roofing is formed on site and cut to length to reduce waste and save you money. CN Metals will help you design your pole building/garage and provide a quote for your project. Our overhead door department offers a variety of garage door systems for residential and commercial applications. Experienced installers provide full service garage door and opener installation at your home or business. Delivery services provided to Maryland, West Virginia, Pennsylvania and Virginia.