Installing copper roofing or flashing according to manufacturer specifications begins with thorough surface preparation and precise measurements. Start by cleaning the substrate where the copper will be attached to ensure there is no dirt, debris, or moisture that could interfere with adhesion or cause corrosion. Next, measure and cut the copper pieces carefully, allowing for thermal expansion by leaving slight gaps as recommended. When applying copper, always use compatible fasteners, such as copper nails or stainless steel screws, to prevent galvanic corrosion. Overlaps should follow manufacturer guidelines, typically a minimum of 2 to 3 inches, to ensure proper water shedding. It’s essential to form the copper with gentle bends rather than sharp creases to avoid damaging the metal. Also, consider the environment and local building codes that may require specific sealants or underlayment to protect the roof system from water infiltration.
For a simple DIY check, examine the copper installation closely for consistent overlap, fastener placement, and absence of sharp bends or punctures. Make sure there are no gaps where water could seep in and the copper is securely fastened without being overly tight to allow for movement. If unsure about proper expansion gaps or compatibility with existing roofing materials, or if you notice any irregularities like uneven seams or fastener corrosion, it’s wise to call a professional roofer experienced in metal roofing. When consulting a contractor, ask: “Can you show me the manufacturer’s installation guidelines for this copper system?” and “How do you handle copper expansion and connection to existing materials to prevent water issues?” These questions help confirm their expertise and ensure your copper roofing will perform reliably within warranty terms.