Standard lengths for tin panels are 8 feet (240 cm), 10 feet (300 cm), and 12 feet (370 cm). The most common widths are 36 inches (91 cm) and 26 inches (66 cm).
Using a circular saw on tin siding can be very dangerous. Do not attempt this unless you have experience with circular saws.
The width of tin roofing is measured straight across the top of the sheet. It does not consider the peaks and valleys of the corrugated material. Remember that each sheet will need to overlap by several inches.
Ask a friend to hold your ladder. Stay close to the roof when moving around. Avoid doing this during bad weather, or on a very windy day. Write down these measurements right away, so you won’t forget.
Right-hand tin snips can be used to cut tin when the “waste tin” (the tin you won’t be using) will be on the right side of the cutting line. Right-hand snips are also used to make a curve that runs counterclockwise. Left-hand tin snips are used when the waste tin is on the left side of the cut line. Left-hand snips are also used to makes curves that run clockwise. Center snips (also called straight cut tin snips) can be used to make straight cuts. Center snips cannot be used for curves.
The only real benefit to using a circular saw is that you may already have one. Instead of purchasing new tools, you would only need a new blade.
