Why are latex coatings especially vulnerable to ponding locations?

Latex coatings are particularly vulnerable to ponding locations primarily because of the challenges posed by contaminated surfaces and the potential for water penetration through the coating itself. When water collects in low-lying areas of a roof, it can interact with contaminants on the surface, including dirt, debris, and possibly chemical residues. This interaction can lead to the degradation of the latex coating as it is less resistant to harsh conditions compared to some other materials.

Additionally, ponding water can create conditions favorable for moisture infiltration, leading to damaging effects beneath the coating. The prolonged presence of water in these areas can weaken the bond between the coating and the substrate, promoting peeling or blistering. Therefore, the combination of surface contamination and the effects of standing water makes latex coatings particularly susceptible in situations where ponding occurs.