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The average cost of welding is about $300 per project. Welding project costs range from $125 to $490 on average, depending on the type of metal, the size and complexity of the project, and your geographic location. On the low end of the price range, you might pay $50 up to $1,200 or more. The type of metal rods used and the welding method also factor into the project’s overall cost.

Roofers most often use nails to fasten roofing shingles and other roofing materials. Nails have more holding power than staples and offer better weather resistance and longevity. However, it is possible to use staples instead of nails when installing a roof. Staples are less expensive, but not as high-quality.

When choosing a metal roof, consider not only the area of the roof but also the thickness of the panel, known as the gauge. Common roofing gauge sizes for metal roofs are 24-gauge and 26-gauge. The smaller the gauge size, the thicker the roof. Usually, a thicker gauge is ideal if your house is in an area that sees a lot of rain, snow, or hail, as it will be less likely to dent.

The green coloration that develops on copper roofs is called a “patina,” and it’s a result of mild oxidation on the surface. The oxidation process is not harmful to your roof. In fact, the surface corrosion acts as a protective layer and won’t spread to the core of your copper roof materials. The discoloration will progress much more quickly in damp or humid climates than it will in dry climates. If you don’t like the green color, you can seal your roof to preserve the shiny, rose-gold look.