Five roof warning signs and what to do next

A roof symptom is a reason to look closer, not a complete repair instruction. These five signs help organize the observations and questions that belong in a qualified assessment.

Use the five observations below to explain the concern from safe ground or accessible unaffected interior space. The repair method should follow diagnosis of the cause and surrounding condition.

1. Sagging Roof

Keep people clear of visibly sagging or damaged areas and arrange appropriate urgent assessment. Do not walk, lift or probe the area to decide its severity. A covering repair alone does not establish that a support problem is solved.

2. Missing Shingles

From safe ground, note where covering is missing or displaced and when it was first seen. Weather, aging or installation concerns need assessment; the symptom does not establish a cause by itself. Compare compatible localized repair with the surrounding condition.⁠^[1]

3. Leaks

Record the location and timing of stains or drips without approaching wet electrical equipment or damaged ceilings. The entry may be elsewhere or involve plumbing/condensation, so request a cause-specific assessment rather than patching the apparent location.

4. Cracks and Blisters

Cracks and blisters are another common sign that your roof needs repair. These can occur due to a variety of reasons, including wear and tear, exposure to the elements, or even poor installation. If you notice cracks or blisters on your roof, it is important to address the issue as soon as possible, as this can lead to leaks, water damage, and other issues.

5. Age of Roof

Use age with repair history, condition and repairability. A universal year range does not diagnose a roof; ask why the findings justify monitoring, repair or replacement.⁠^[1]

Record the symptom, date and location, then obtain an appropriate assessment. Immediate structural or electrical hazards need a different response from ordinary maintenance; a repair inquiry is not an emergency-dispatch confirmation.

For water-entry symptoms, see the roof leak information and explain when and where moisture appears.

General homeowner information, not a property-specific assessment. Requirements and product instructions vary. Leave roof access, diagnosis and hazardous work to qualified professionals.