Maybe an inferior shield over the sheathing or a product designed for a cooler marketplace. Anyone’s guess.
Makes sense
Sure looks like a tab seal bleed-out David.
Looks like it happened before for someone. It looks similar to what is shown here.
https://inspectapedia.com/roof/Asphalt_Shingle_Sealant_Bleed.php
I have never come across it myself, but sure looks like a Manufacturers defect to me on seal tab bleed out.
I am sure the installer will find out from the Manufacturer.
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That helps Marcel. Thank you Sir.
You’re welcome and nice to see you are back at work. I thought you were retired for a minute there with all those vacation pics.
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Marcel,
I never stopped inspecting homes. I simply do not sign in to this awesome inspection forum as much as I should. I’ve always averaged 7-15 inspections a week. So between home inspections, prepping my kids for college and traveling the world 2-3 times a year, it leaves very little time for this forum.
If you’ve enjoyed my past vacation pics, then my November vacation pics will be the best by far. Hint: Polynesia
That should be a nice one. Glad you get to enjoy yourself with Family once in awhile. Always enjoy your photos.
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Thanks buddy. Stay healthy and may you and yours enjoy life as much as we do.
Hi David!
I’m with Larry. I think this is a bad batch of sealant adhesive.
The only exception I can think of is that the roofing contractor was hired to install the roof during cold weather and tried to ensure that it sealed by hand-sealing it with a product that softened and ran once it heated up.
Manufacturer’s rep.
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I know this is an old thread, but I saw the same thing on this morning’s inspection. The one thing I noticed when I went into the attic was they had installed the LP radiant barrier decking. Just wondering if the radiant barrier added to the problem?
Good possibility David, or coincidental.
My thought is factory applied tar was applied too thick and heat from sun melted the tar strip causing it to melt and run down shingles below it.
Either way, I red-flagged this tar defect.
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Hi. Dave, hope all is well.
I’d be curious if it is the same Manufacture of the shingles.
Unsure Sir as I was unable to obtain info on those particular shingles.
Likewise, I couldn’t find any info. I do know the roof was installed in 2010.
The only way one is going to find out what is going on is to actually remove one or two of the shingles where it is bleeding and see what is causing the bleeding.
It doesn’t appear this link comes up with a cause.
https://inspectapedia.com/roof/Asphalt_Shingle_Sealant_Bleed.php
O, About ten or so years ago, Owens Corning came out with a plastic nailing strip that tar was supposed to stick to for better wind protection, and it had, I think, a 40-year warranty. It did not work out that well, the shingles did not adhere to the plastic, and there were many blow-offs. Maybe being on the south side of the roof, the tar would weep out because it did not adhere to the plastic, just a thought.
This is their updated version. It has a cloth nailing strip.
I read that as well. I will let my client pursue it with a roofer.
I don’t see a problem here. Shingles need to be hand sealed on steep roofs because adhesive strip will not work. They would not self seal without weight from above.
Good roofer