Frequent Causes of Attic Water Damage
Water enters an attic from several sources. Some problems are easy to
spot, while others stay hidden until moisture has spread through
insulation and framing. Knowing these common causes helps you identify
attic moisture early.
Roof leaks
Damaged shingles, worn seals, or cracked flashing allow
rainwater into the attic
Ice dams
Ice buildup along the roof edge traps melting snow and pushes water
beneath shingles
Poor ventilation
Limited airflow traps humidity and causes moisture to build up in
insulation
Clogged gutters
Blocked gutters cause water to back up beneath the roofline and
enter the attic
Plumbing failures
Leaking pipes near the attic release water onto insulation and
surrounding materials
HVAC condensation
HVAC condensation drips onto nearby insulation, wood framing, and
other materials