Flashing gap question

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Old 05-24-20, 02:26 PM
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Flashing gap question

Hi,

Looking at my chimney flashing, I noticed that while the top chimney flashing was caulked as well as the vertical pieces, there is no sealant where the apron and side flashing meets the roof shingles (circled in yellow in picture)

I’m wondering if it was done on purpose or if I should seal it.

Thank you
 
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Old 05-24-20, 02:37 PM
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No that does not get caulked.
 
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Old 05-24-20, 08:12 PM
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Thank you.

Any particular reason why this should not be sealed?
 
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Old 05-24-20, 08:32 PM
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It does not need to be. You should have step flashing under the shingles going up onto the chimney. The wide metal on the chimney is a separate counterflashing, which covers the step flashing so that it can't leak. If you caulk it you create a dam where if water DOES gets in, it can't drain OUT and it could potentially leak in. And it would ruin the flashing for future reuse.
 
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