When might the reinforcement in a roofing system become compromised?

The reinforcement in a roofing system can become compromised when the glaze coat exhibits alligatoring or crazing. These terms refer to the formation of cracks or surface failures that create a pattern resembling alligator skin. When these defects occur, they can allow moisture and environmental elements to penetrate the surface of the roofing system, which can lead to deterioration of the underlying materials, including the reinforcement. This compromise can significantly reduce the structural integrity and lifespan of the roofing system, as moisture infiltration can result in additional issues like mold growth, insulation damage, or further deterioration of the roof’s ability to perform effectively.

The other options do not present scenarios that typically compromise reinforcement in the same way. High humidity can affect roofing performance but does not directly lead to immediate compromise of the reinforcement unless it contributes to conditions like alligatoring over time. Applying the glaze coat correctly is meant to enhance protection rather than compromise the roofing system. Ventilation is generally beneficial for roofing systems, helping to prevent moisture buildup and maintaining a stable environment, rather than posing a risk to reinforcement.