Step 2: Completely remove the damaged shingles.
Use the nail-cutting feature of the shingle-ripping bar to completely remove the damaged shingles. Slide that end of the bar up under the shingle, and locate the heads of the nails that secure the shingle in place. Hook the nail-cutting end of the bar around a nail. Give the handle of the bar a sharp blow with a mallet or hammer to cut the nail. With the nails cut, the shingle will pull away easily.
 Hit the handle with a hammer to cut the nail.
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