Help! Does this look like a roof leak?


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Old 04-10-22, 09:52 AM
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Help! Does this look like a roof leak?

About a month ago, I noticed a spot on our roof looking dark (wet?) even after the roof dried. What does this look like to you? Any insight? I looked in the attic for signs of moisture, and also under the soffits to no avail.The roof is only 14 years old, but I'm concerned it might be failing. Is this most likely a leak? Are there any other explanations for what might be causing this? Thanks so much!



 
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Old 04-10-22, 09:57 AM
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Does it always look that way? It looks like those shingles are still wet. If rain is getting under the shingles it should still dry out and look like the rest.
 
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Old 04-10-22, 10:03 AM
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It's hard to say for sure, they are certainly discolored 100% of the time. It looks like the roof is wet most of the time, but we have a lot of moisture in the Pacific Northwest this time of year. Is there something that could be causing the shingles to stay wet, but that does not indicate roof failure?
 
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Old 04-10-22, 10:05 AM
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I'm a painter not a roofer but I'd think it's probably time to get someone on the roof to inspect it closer.
 
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Old 04-10-22, 10:08 AM
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A roof leak would be something you would see inside not on the surface of the shingles.

It looks like it's just above the overhang so that leads me to think something is causing a cooling effect where condensation is forming, but why only half the way up> Is there a room up there?

Have you gotten up into the attic? What do you see up there?

Are the shingles actualy wet?
 
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Old 04-10-22, 10:30 AM
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You've got moss growing up at the peak which is a sign of excess moisture. Do you have a pic of the backside of the house? i.e. is the same thing going on the overhang in the back? Marq1 could be on to something regarding condensation.
 
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Old 04-10-22, 11:19 AM
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Marq1 could be on to something regarding condensation.
Agreed- that gable wall doesn't have any windows- which usually indicates the north / northwest facing side.It looks like you've got an attic vent on the north gable, with moss on the roof above the vent. Moss will find moisture coming from warm air inside the house that escapes through the peak vent, and then grow and keep it damp, evaporation keeps it cool & moist on cloudy days- thus the moss is keeping that area damp & happy growing there). It is AMAZING how much moisture moss and fine-soil can hold.

I'd say get a ladder and a push broom, walk up the roof valley left of the door, walk over while straddling the peak, and brush the moss off with the push broom. Might also use a garden hose if you've got good water pressure.
 
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Old 04-11-22, 06:47 AM
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That is on the overhang portion of the roof. Looks like you need ventilated soffit on the gable overhang.
 
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Old 04-11-22, 07:03 AM
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Not being there makes this difficult.

Looks to me like there is a extra heavy moss growth on the peak above the decolorization.
So it is my guess that it is this that is the problem.

Looks like there are other area on the roof but not as severe.

I would get someone up there to kill the moss.

 
 

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