Metal roofs are durable, environmentally friendly, safe and budget-friendly. If you’re considering an update, metal roofing installation doesn’t have to mean completely removing your old roof. In many cases, metal roofing can be installed over your existing shingles. Research building codes in your state, as many require that after two roofs have been installed, all roofing materials must be completely removed before a third roof can be put on. This protects your home’s structural integrity and your family’s safety. Carefully read contractor reviews and choose someone with extensive experience with metal roofing installation. One concern when installing metal over shingles is that over time, condensation can build on the shingles and cause the metal to rust. This will lead to rust around the panels, making them more likely to come loose in a storm. Nationally, the average cost for metal roofing installation ranges from $6,000 to $20,000. The wide price range represents different roof sizes, different types of metal, and the cost of labor in different parts of the country — and can also include the cost of removing an old shingle roof prior to installing the metal. As a line item, the average cost of removing an old roof to prepare for installing a new roof, plus adding new roof decking, costs on average about $45-$75 per square (the pro roofer’s term for 100 square feet), depending on the pitch of the roof. Always make sure you have a clearly written contract and a warranty on both the labor and the metal.

A standing seam metal roof may be a strong, durable, safe choice when you’re considering metal roofing installation options. A standing seam refers to the raised seam where the sheet metal roofing panels join. Traditionally, shingles and roof panels lie flush to the roof, making them more prone to rust or penetration by water at their seams. In a standing seam metal roof, the raised (or standing) seams run vertically from the roof ridge to the eaves, with no horizontal seams. In addition, the fasteners joining the metal panels together are concealed, providing even fewer opportunities for water or moisture to build up. The cost to install a standing seam metal roof will depend on the type of metal you select, the size of your roof, and the cost of roofing labor in your region. Materials will play a major role in your metal roofing installation costs. If you select standard galvanized steel, the cost per square (100 square feet) might be in the $150-$300 range, while a high-end choice such as copper or zinc could be between $1,000 and $1,500 per square. Here is one example of cost:   

• Standing seam metal roof: $300 per square to start, including materials and labor.
• A 30-square roof could cost $9,000 or more.

Metal roofing installation is an attractive option thanks to metal’s long lifespan, hardiness and fire-retardant properties. Nationally, the average cost for metal roofing installation ranges from $6,000 to $20,000.There are different types of metal roofs, each with their own installation needs and materials costs. Roof size also affects your metal roofing installation costs, as do regional labor rates. Roof size is measured in squares; one square equals 100 square feet. Here are some examples of the average cost for a metal roof:

• Standard metal roof: $120-$150 per square to start, including materials and labor
• A 30-square roof (a 3,000-square-foot roof) could cost between $3,600 and $4,500 for a typical three-bedroom home.
• Snap-Loc metal roof: $200-$225 per square to start, including materials and labor.
• A 30-square roof could cost $6,000-$6,750.
• Standing seam metal roof: $300 per square to start, including materials and labor.
• A 30-square roof could cost $9,000 or more.
• Tuff-Rib metal roof: $250-$350 per square to start, including materials and labor.
• A 30-square roof could cost $7,500-$10,500.
• Mid-range metal roof package, including all accessories: $300-$500 per square.
• A 30-square roof could cost $9,000-$15,000.
• High-end metal roof package — such as zinc or copper — and all accessories: $1,000-$1,500 per square.
• A 30-square roof could cost $30,000-$45,000.