Plywood
Subroof Replacement: After "tearing off" the old
two layers of shingles and tarpaper, we get a good look at the existing plywood. In this
instance, penetrations in the roof were caused by a high-end gutter guard system, which
required fasteners that were actually screwed through the shingles.
Every area is critical on a low-slope
roof like this one -- and that's why I'm against using any gutter guards that use screws that
pierce the shingle system. It just doesn't make sense to me, and you can see
the resulting damage below.
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