Metal Roof Calculator – A metal roof is one of the most durable material options for your home. When ordering supplies it is important to estimate materials correctly to allow for an efficient installation process. Estimating the amount of metal roofing materials you need starts with estimating the square footage of the roof itself.
If you are unable to crawl on the roof you can estimate by measuring the footprint of the roof and finding the square footage of the footprint.
Multiply the footprint square footage by the multiplier for your roof pitch to find the actual square footage of the roof. Use our roof pitch calculator to find the pitch of your roof.
Next, find the square footage of the metal roofing panels you want to use. Measure the length and width in feet, then multiply together to find the square footage. Panels are often measured in inches, use our inches to feet conversion calculator to convert to feet.
Finally, divide the square footage of the roof by the square footage of the metal roofing panel to find the number of panels needed for your roof. It’s a good idea to order an extra 10% to account for cutoffs and waste material.
For more complex roofs with many peaks and sections, find he square footage of each roof section and add them all together to find the total square footage. Consider ordering a few extra panels to account for more cuts and waste.
How to Estimate Your Metal Roof Cost
According to the 2014 US Census, the average square footage of the average American roof is 1700 square feet. Calculating the cost of a metal roof isn’t as simple as just knowing your square footage, however. The price of metal is subject to fluctuation. Sometimes it can be pretty volatile. (In 2007, steel had a very wild period in which quotes for steel prices were good only for one hour!)
Here’s a quick formula to calculate a rough idea of how much you should expect to pay: Metal price + waste percentage + shipping + labor = total cost The metal price is per square (100 square feet).
Depending on the complexity of the job, your waste percentage will generally be between 5% and 20%. Shipping can vary depending on distance and material. Some places deliver anywhere in the lower 48 states for $75 for standing seam roofing. Shingles usually ship as LTL (Less Than Load) and may cost a bit more.
Labor can cost around $3000, assuming the roof is an ordinary shape with no steep slopes or other features. After adding details such as drip edges, gable edges, ridge caps, valleys, fasteners, coating, and pipe flashings, the total can be from 3 to 7 times the cost of just the materials alone.
It’s worth having it professionally done, though. Get it done right, and your roof can out-live you and your house!
Metal Roof Calculator
How Much Does A Metal Roof Save Me?
Though a metal roof may involve a large up-front cost, if you plan to stay in your home for a long time, the savings are well worth it.
- A metal roof can save up to 40% on your energy bill.
- A metal roof can get you an insurance discount of up to 30%.
- If you decide to sell, a metal roof can recoup up to 95%.
- A metal roof will not need the amount of maintenance of an asphalt roof.
- A metal roof lasts at least 4 times as long as an asphalt roof.
Finally, there is the “life cycle cost”, or how much a roof will cost you over the years. A shake roof may start out at around $12,500, but after a 40 year cycle the cost of the roof can rise to almost $45,000 when you calculate in maintenance and repairs, a yearly cost of over $800.
Concrete roofing starts at around $7,000, but 40 years later it has cost almost 5 times that in maintenance and repairs, around $700 per year. A metal roof that starts at $15,000 has risen to only around $18,000 over a 40 year span, or about $75 a year.
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