12-02-2008, 04:29 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 5,583
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the area in question should have an aluminum flashing installed BEFORE the course of shingles were put on. your sister is correct. the sheathing will rot or else leak water into the house. from what I can see in the photo, I can see the vertical boards underneath.
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