I live in a 22 year house with an attached garage. The outside wall of the garage faces north. I have recently added insulation and drywall to this wall inside the garage. I have been in the house for 10 years. During all that time I have noticed that whenever it rains or is humid the short cement foundation part that the wall sits on gets very wet. It does not matter which way the wind is blowing. Teh insid eof the wall itslef never felt wet. There is evestroughing on the house above the garage (which drains onto the garage roof and then into other evestroughing). The cement part inside the garage is starting to crumble/flack off.
Answer:
The moisture build-up between the siding and structure appears to be flowing on down just the way its supposed to and then your foundation wall is picking it up. There should not though, be that much moisture there. This is something you should monitor and discuss with a mason.
