TOPIC: Moisture staining on the common wall. Any one see this before?

Moisture staining on the common wall between the house and garage.  I noticed some of the stains were right in line with the wall studs.  

I checked the roof in this area (were the garage roof meets the wall of the house) and it appeared to be fine.  No visible flashing - vinyl sided.  

I checked the stains with a moisture meter before going into the house and one of the stains in the drywall was at 20%.  It started to rain while I was doing the inside portion of my inspection.  When I was packing up to leave I checked the same stain that was 20% and found it to be 50%.  

I recommended a licensed roofer evaluate and repair as needed.  The buyer contacted me and said the roofer didn't find any issues.  

This has to be coming from the roof.  Anyone have experience with the same type of issue - stains in the common wall nothing visible in the attic or on the ceiling?  

I suggested removing the drywall in the garage to trace the stain to the leak.  Any other advice is appreciated.

Have a blessed day!

Mike

I would get a thermal imager in there.  It's non invasive and you should be able to chase the waters path to it's point of entry, and it might be 30 feet away, that's potentially a lot of sheetrock.

Yes I did recommend IR to him.  It's a ranch so not too much drywall to pull. 

No visible flashing? What's that mean? How bout some roof view pics for this leak? The hell w/ your moisture meter and pics of stains at interior sheetrock, let's see some roof views from exterior above this area. ! !

the connection point where the garage attaches is most likely the area any pics ,  

Sorry no close up shots of that area.  I did the roof inspection before the garage.  Nothing out of the ordinary.  Typical vinyl siding up to the roofing.