Did I install this vent flashing correctly?

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Old 02-01-17, 04:48 PM
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Did I install this vent flashing correctly?

Hello everyone,

With the recent rains in California, I found a few leaks on my roof. They are all coming from vents and air pipes. I have zero experience when it comes to roofing but quickly got a general understanding of shingle and vent installation from YouTube. My concern is I didn't install this vent flash correctly. The way I did this job was by removing the existing shingles and install it right over water proof black paper. I then put the shingles back to their original location and adjusted some by cutting them. From what I seen in the videos is they always leave the bottom part of the flashing exposed so that water runs easier? But I covered mine up and left a nice area for water to get caught up. I'm a little concerned about that. Please review the pictures below and let me know if I need to correct anything or if it's ok. Thank you in advance.
 
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Old 02-01-17, 04:54 PM
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Uploaded more pictures........................
 
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Last edited by dman81; 02-01-17 at 05:20 PM.
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Old 02-01-17, 05:21 PM
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Before:



 
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Old 02-01-17, 08:17 PM
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Looks wrong to me, but some people like to rely on caulk and tar to keep water out. That roof looks really flat.
 
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Old 02-01-17, 08:58 PM
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Not even close.
Should have looked more like this.
https://www.google.com/search?q=roof...7cJc5RN6fFmeM:
The way you did is just about sure to leak.
Also looks like those shingles are at the end of there life span.
What's up with the gallon of roofing tar?
I have not used a whole gal. in 40 plus years working roofs.
 
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Old 02-02-17, 02:19 AM
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Thanks everyone, so how do I correct this problem? Do I need to expose the lower flashing?
 
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Old 02-02-17, 04:34 AM
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I see what you tried to do. You tried to minimally remove shingles and tuck the vent under existing material. What you need to do is vacate an area about 3' around the vent hole of shingles. That way you can install the vent, THEN go back and properly layer the shingles sans the goop. Joe referred to a bunch of vent installations and you can get the gist of how to do it there. Apply new shingles, properly layered to provide constant and unobstructed water runoff. The bottom of the vent should be on top of the shingles, again to provide water a way to move OVER the shingles.
 
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