Ice & Water Shield when there’s no ice?
I live in zone 4C in Portland Oregon (and at low elevation) where ice damming is, as far as I can tell, a non-issue. We get maybe one light snow per year, and only brief periods of freezing (maybe a few days at most?). I’ve only been here 8 years but I don’t recall ever seeing a single icicle.
Does it still make sense to have I&W shield installed at the eaves, perhaps in case of gutter backup? Is it a good idea in valleys, simply to mitigate risk from heavy rains? Or is it basically pointless?
The roof is 6/12, simple gable with one small hip sticking out perpendicular (“L” shape).
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