Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install corrugated metal roofing [title] Prepare the roof surface by removing any old roofing, any rotten wood, and adding roofing felt to the entire surface. [substeps] Roofing felt is a cheap and easy-to-install material: simply nail the sheets into wood, overlapping each sheet by 3 to 4 inches (or about 10 cm). [title] Calculate the number of sheets of corrugated metal needed.

Ending1: [step] Divide the area of your roof by the size of the sheets you will be using. Remember that you will want the metal sheets to overlap. Ending2: [step] The number of sheets required will depend on the brand of corrugated metal that you buy. For example, for wood-roofing felt , 8.5 sheets per square foot would be sufficient. Ending3: [step] Corrugated metal can and will outgrow any other metal you add to the roof during the installation process. However, moving metal allows you to save money on the crafting process. Ending4: [step] This is a measurement of how much corrugated metal you need for your roof. It will be displayed on the underside of the roofing piece, along with a draw chart.

Answer format: ending1/ending2/ending3/ending4