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Old 05-24-2012, 08:23 AM   #1
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Lumpy


No, not Lumpy Rutherford, this is a lump that has appeared on my 4 year old roof. It's a bit "softer" than the rest of the roof in that spot, so I'm thinking moisture somehow got under there and it's swelling or something? Is there any easy fix? Perhaps a weight to flatten it, then mop on some black tar to seal the edges of the shingles? The roof is only a few years old, so I'm concerned the osb underneath is damaged. Any ideas?

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Old 05-24-2012, 08:35 AM   #2
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Come on newbie, pictures, geez.
Okay fine. Is it a linear ridge extending a bit or are you saying it's just like a round lump?

If you have any replacement shingles the most comprehensive thing to do is remove a few shingles and see what's going on underneath.
Showing up four years later is odd and would make me think structural shift. That dramatic you should see signs of it from the inside if it's water or moisture damage.

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Old 05-24-2012, 08:38 AM   #3
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I HAVE pictures, but they're not uploading. I'm still having server problems, evidently.

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Old 05-24-2012, 12:20 PM   #4
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I'm thinking line problems....I can't even send text emails now.

okay, what if I sat a 3x3 or 4x4ish sheet of 3/4" plywood on it and then put a few cinder blocks on it for a few days? as long as it doesn't rain....? That should flatten it back down, right? Then tar the crap out of it? I don't want to have to tear up any shingles......

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Old 05-24-2012, 02:08 PM   #5
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If it's a shingle roof you don't want to be going up there with any tar/caulk or other liquids. If it's not actually a leak then you don't need them anyways. Extreme weight on it on a very hot day may work to flatten it back out. Post the pictures when you get things working.
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Old 05-24-2012, 04:44 PM   #6
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DM -
Not knowing where on the roof the lump is -
Not knowing how high the lump is -
You could try doing what you suggest.
Probably, wouldn't work - who knows?!?
4 years old - OSB - probably didn't hit the rafters with the nails.
Or, it was installed too tight and it expanded.
Check your venting.
Try to stay away from the "TAR"!
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Old 05-24-2012, 05:32 PM   #7
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Lumpy


In the field of the roof? Probably a nail backing out. If it's a plank, most likely, somebody didn't renail the deck and now the end of a board is curling up.

Just remove shingles for about 2' to either side, analyze whether or not you can just renail a loose board.If so, reinstall the same, or new shingles. If not, expand the scope of the repair.
If it's plywood, the scope will expand to at least 5' up by at least 5' to the side(s).

Dang newb without pix again! Sheesh!
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Old 05-24-2012, 07:30 PM   #8
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Yeah, them "newbies" with no "pics"!
Telling us your location might help!?
He, he, he!
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Old 05-24-2012, 07:53 PM   #9
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Location? He's right here!!!

Is this raised section along a seam in the OSB?
In an earlier post you mentioned a ventilation problem in a portion of your attic--is this over that area?
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Old 05-25-2012, 04:55 AM   #10
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Quote:
Originally Posted by oh'mike View Post
Location? He's right here!!!

Is this raised section along a seam in the OSB?
In an earlier post you mentioned a ventilation problem in a portion of your attic--is this over that area?
No, it's in another area. Still having server problems, so no pics yet.

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Old 05-25-2012, 12:44 PM   #11
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......................
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Old 05-25-2012, 06:50 PM   #12
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Old 05-25-2012, 07:02 PM   #13
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That didn't work.... lol

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Old 05-25-2012, 08:07 PM   #14
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Here ya go DM, I hope this works.
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Old 05-25-2012, 08:09 PM   #15
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This looks to me that the ends of your plywood or OSB curled on the end joint or bucked. Just a guess.

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Last edited by BigJim; 05-25-2012 at 08:09 PM. Reason: Added
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