1. Article Body
Condominium roof problems are usually ordinary roofing problems made worse by slow decision making. Both halves matter.
Top floor units find everything first
Any roof failure reaches the top floor before it reaches anyone else, which means top floor owners carry a disproportionate share of the disruption while paying the same share of the reserve.
That is worth knowing when you buy and worth saying plainly at a board meeting.
Balcony and deck drainage
A balcony above another unit is a roof over that unit.
Blocked drains let water rise above the door threshold and into the interior. Residents store furniture and planters on drains without realizing what they are blocking.
This is the most common water intrusion path in multifamily buildings and it is almost entirely preventable.
Transitions between roof types
Condominium buildings frequently combine low slope over the main mass with steep slope, mansard or tile over entries and upper elevations.
The junction between two systems is the hardest detail on the building and the most common persistent leak.
Plumbing vent penetrations
Every unit has a stack. A building with many units has many penetrations, and pipe boots fail on a predictable cycle.
Stair towers, elevator overruns and small roofs
Small roof areas nobody walks, with their own drains and flashings, routinely excluded from both inspections and contracts.
Mechanical screens and rooftop equipment
Screen walls and equipment supports penetrate the roof, and they are usually installed by trades other than the roofer.
Window and wall interfaces
Water at the top of a wall, at a window head or at a parapet often reaches the unit without passing through the roof covering at all. It is reported as a roof leak and investigated as one, sometimes for a long time.
The governance failures
These cause more damage than any of the above.
No single person owns the roof operationally, so nothing is inspected until something leaks.
Repairs are approved one leak at a time because a full assessment would force a reserve conversation nobody wants.
The reserve contribution is set against an optimistic service life, so the shortfall is discovered late.
Board turnover means the roof history lives in nobody's memory and no file.
What a unit owner can do
Report every occurrence in writing, with photographs and dates, to the management company and the board.
Ask for the reserve study and the last condition assessment.
Ask, in a meeting, what remaining useful life the reserve contribution assumes and what evidence supports it.
Those questions move buildings. Repairs requested verbally do not.



