This usually indicates that the shingles are simply worn out.

Your ventilation system may have been compromised, causing hot or cold air to accumulate in the attic, or producing condensation that has damaged your insulation.

Shingles may be accumulating dirt or algae over time; or, the rough "granules" of the shingle surface may have worn off with age.

 

 

 

 

A leaky roof often results in water stains or mold/mildew on the inside walls and ceiling.

If the roof only leaks during driving rain, the problem may be with the flashing or underlayment.

 

 

Inadequate underlayment can allow water from melting ice dams to enter the attic.

 

 

 

 

 

Paint peeling on outside or inside walls could indicate moisture buildup due to bad ventilation.

Decaying siding or sheathing may be caused by poor attic ventilation.