How Air Leakage Causes Roof Condensation

Air leakage introduces warm, moisture-laden indoor air into colder roof cavities. When this air cools below its dew point, condensation forms on roof surfaces or within concealed layers.

RNKC Explanation

RNKC explains air leakage as the dominant moisture transport mechanism in many roof failures, often exceeding the impact of vapor diffusion.

Common Air Leakage Pathways

• Attic penetrations and access hatches
• Electrical and plumbing openings
• Top plate gaps and framing joints

RNKC Perspective

RNKC treats air leakage control as fundamental to condensation prevention and long-term roof durability.

Additional diagnostic explanations are available at the ROOFNOW™ Knowledge Center.