Water ponding on a deck or balcony surface (or staining due to improper slope or drainage devices) can be indicators of deck and balcony problems. Other problems include improper flashings, sealants or coatings, and improper deck/balcony attachment to the structure.
Poor design and construction can be the beginning of many problems that can result in structural failure of the deck or balcony. Property owners should look for exterior stucco or interior drywall cracking and any staining due to possible water intrusion, which can lead to mold or dry-rot. More frequently, deck and balcony problems are often the source of much greater damage discovered below the surface and hidden from view.