Things You Will Need
The flexibility of vinyl siding allows you to snap unsnapped seams together without removing or replacing the siding. A siding installation tool works the seams together without causing damage to the installed siding, keeping moisture and bugs from damaging your home.
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Slip a rag under the loose vinyl siding seam. Drag the rag along the bottom edge of the seam to remove dirt and debris that will interfere with the siding repair.
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Remove the rag from the loose seam.
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Slide the hooked end of a siding zip tool under the lip of the top piece of siding. Push the zip tool forward until you reach the end of the loose seam.
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Pull down on the zip tool handle as you push the top piece of vinyl siding toward the wall. Pull the zip tool along the seam -- while maintaining pressure on the siding -- until the lower flange of the top length of siding snaps onto the upper flange of the lower piece of siding.
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Repeat the process to snap all loose vinyl siding seams in place.