Are condominium or multi-story building balcony leaks a common mold source?
Most of the exterior walls of our unit are under large balconies for the unit above ours – we are the last condominium of our type in the stack before a new floor plan begins above us. Referring back to the rectangle drawing, if you draw two diagonal lines connecting the short lines and the bottom long line to make large triangles in the lower left corner and lower right corner you will have a sense of where the balconies are located above us. We have been told that unless balcony construction is “perfect” it is a likely source of water penetration. Do you have any thoughts on this? Balcony leaks in multi story buildings such as you describe are notorious – bad flashing on the balcony, bad drainage, or leaky doors and door thresholds. A friend in Chicago had to stack towels along her doors when the rain was blowing. If water leaks under parquet or into wall cavities from the balcony that could be a good mold cause.
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