Flat Roof Leak Repair in Concordia

Not in itself. Water that clears within a day or two of rain is normal. Water still there a week later is a seam being tested continuously, and it usually means the fall does not actually run or an outlet is not at the low point.

It depends who built it. Where a low-slope addition was put on by the original builder it is usually treated as part of the structure; where a previous owner added it, it frequently is not, and may not appear in the reserve study at all. That is worth establishing before it fails rather than after.

No. A sound roof does not leak in heavy rain, and treating it as normal is how a small entry point becomes a soft deck. What IS normal is a roof leaking only in certain conditions -- wind-driven rain from one direction, or a long downpour rather than a short one -- because that points at a specific detail failing under specific loading rather than at a hole. It is a diagnosis, not a reassurance.

Usually not the full term. The rating describes the material under test conditions, not a roof on a particular house, and in this climate freeze and thaw at the eaves, ventilation, drainage and the quality of the original nailing all move the real figure. A 30 year product commonly gives 22 to 27 well-maintained years here. It also matters what happened in year one: a roof nailed badly is on a shorter clock from the day it went on.

It is a Florida rule and it does not apply in New Jersey. The 25% rule comes from the Florida Building Code Existing Building, where repairing or replacing more than a quarter of a roof within a year can require the whole thing to be brought up to current code. New Jersey has no equivalent provision. It turns up in searches here because national content repeats it without saying which state it belongs to, and anyone quoting it at you in this state is citing the wrong code book.