Water-damaged ceiling showing holes caused by a leaking roof. A small roof leak can do more damage than most homeowners realize. Water that seeps into your roof system travels silently, behind insulation, through rafters, and into drywall before you even see the first stain. By the time it’s visible, it could have already weakened your roof structure, encouraged mold growth, or damaged electrical wiring. According to Angi’s 2025 report, the average roof leak repair costs bet
