How can I tell if my roof is leaking from a leaking skylight or the flashing (Saint Paul photo checklist)?
A skylight flashing leak usually shows up as a roof leak in the form of staining that starts at the skylight’s edges (often the uphill side) and worsens during wind-driven rain or thaw cycles. A skylight unit leak or condensation issue tends to leave moisture on the glass, frame, or inside corners first. The fastest…
