Published 2026-10-20 · Kansas City roofing guide
In short
Look for daylight, water stains, damp insulation, mold, nail points that frost, and sagging decking.
What to look for
- Daylight through the deck, other than at vents
- Dark stains on rafters or decking
- Damp or flattened insulation
- Mold or a musty smell
- Sagging between rafters
- Frosted nail tips in winter, a ventilation warning
How to check safely
- Use a bright flashlight and step only on joists or boards.
- Check on a sunny day for light leaks.
- Check again after rain for fresh moisture.
- Photograph anything unusual.
Then what
Fresh stains or wet insulation mean water is getting in now; see roof leak repair. Old dry stains may be from a past repair, but are worth mentioning to a roofer.
Questions
How often should I check the attic?
Twice a year and after major storms is a good habit.
Is attic mold always from a roof leak?
Not always. Poor ventilation and bathroom fans venting into the attic are common causes too.
