I would appreciate any tip, help on diagnosing the symptom below.
Been searching online to help diagnose symptom of "wet patch on exterior wall after rain". Did find several useful resources, notably this post,
I've been noticing on my exterior walls above the grade are wet, after rain.
I've checked all gutters and they look fine, no clogs.
Inside basement walls are dry, i don't suspect mold (yet).
Just getting started to understand this symptom better. I'm wondering if the mulch to the sides of the exterior wall is adding to the problem.
As mentioned in the post referenced above, i'm going to follow up these 2 tips,
There could be two issues: 1) moisture dripping off the building paper under the siding, or 2) moisture entering the masonry cells.
How looks after dried,
What got me scratching my head is, comparing my exterior wall to adjacent neighbor, my side seems more wetter, seen same time, same day after rain, in a cloudy (no sun) day.