Things You Will Need
The simple fix can increase the lifespan of your house and add value to it.
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Measure the length of your roof overhang. This is approximately equal to the length of each side of your home, or the length of the gutters alongside the roof.
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Purchase enough drip-cap flashing, also called aluminum drip edge, to fit the length of your overhang.
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Position the flashing under the row of shingles nearest to your gutter. Slide a complete piece of flashing under several shingles at one time. For example, if your flashing is 8 feet in length, slide it under 8 feet of shingles.
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Adjust the flashing so it extends over the gutter.
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Secure the flashing with several short roofing nails along the piece.
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Seal the roofing nails with roofing cement by dropping a dollop of cement on the exposed nail head.