Roofing cement is a similar material made out of fresh asphalt. When the asphalt softens, it can be applied to a surface, and then it hardens as it dries, just like when installing a new asphalt driveway. The main benefit of this material is that it is incredibly durable. However, it is more expensive and less resistant to the sun.
How Long Does Roof Tar Take to Dry?
The expected timing really comes down to the weather on that day. Coatings require a daylight period (about 8 hours) to a full day to dry. The drying period varies wildly depending on how moist conditions are at the time.