Broken shingle corner


  #1  
Old 12-27-19, 09:22 AM
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Broken shingle corner

Wish I had some storage to post a picture, old rant!

Was cleaning out a gutter valley yesterday and found that the corner of the first row (starter), next to the valley has a 3" triangular piece missing.

I can see a bit of the drip edge and the felt/underlayment. The missing corner is visible/accessible and does not go up under the second course

Not knowing what type of starter shingle were used, how much of that should be replaced (12")?

Even though its nice in MI currently it would probably be better to wait till summer so thinking to slip a piece of aluminum trim in there for temp repair or is there something better?
 
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Old 12-27-19, 02:02 PM
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Caulk the aluminum and shingle along edges of missing piece.
 
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Old 12-28-19, 01:55 PM
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Well, not to be to harsh but absolutely never should caulk be used on a roof application. No caulk will ever stand up to the elements found on a roof, that's just bad advice!

So the shingle was not broken, but the outer surface of it was missing, not sure why, have never seen that but I don't do a lot of roofing work.

So I removed the remenits of the outer shingle and cemented down (using correct asphalt sealant) a single layer of shingle from an extra 3 tab, then worked up the edges around the area and was able to slide in a second shingle to bring the level back up to flush.

Couple of roofing nails, sealed with cement, and I think it's good despite only being 40ish out today!
 
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Old 12-29-19, 10:42 AM
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Glad you were able to replace the starter shingle. My understanding was the starter shingle is covered by a finish shingle so the caulk would not be exposed directly to the elements. I see siding installers caulk many joints that are exposed directly to the elements. What is the downside?
 
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Old 12-29-19, 03:36 PM
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Sorry, my response was not intended to be harsh, roofing repairs sealers cements are with asphalt based materials, they hold up better than caulks for roofing repairs.
 
 

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