Exterior foundation moisture

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  #1  
Old 01-07-18, 12:49 PM
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Exterior foundation moisture

Hello.

Came across this issue the other day. Standard 1950 cape cod in south Minneapolis. Stucco work was done in the fall and now it appears as if there is some moisture and efflorescence build up. Grade looks good and appears not to be drainage/excess water issue (no history of basement water or leakage).

Wondering if this could be a condensation issue as the basement has recently been finished, but there is no insulation in the basement walls. Appears as if previous home owners put new panels over existing wall panels. They added new heat ducts into the basement when they installed a new furnace which puts the basement at a higher temperature than what it was likely built to withstand, especially with no wall insulation.

Anyway, any insight would be greatly appreciated. This appears to only be an issue when the temperature is goes from above freezing during the day to below freezing at night. Also appears to only impact the south side of the home.
 
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Old 01-07-18, 01:51 PM
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Need some explanation on the second picture?
 
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Old 01-07-18, 02:46 PM
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2nd photo

Nope. Second photo just showing that the basement is not insulated apart from the small portion between joists .
 
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