This is a short video showing the elastomeric re-coat process. As you can see they are back rolling as they go, this ensures the coating fills any little cracks or holes. Also this is done when there has been an aggregate added before.
The re-coat process involves more than just putting coating down.
1. Clean roof with a broom, leaf blower, and if necessary a water hose.
2. Fix any blisters or cracks and holes with polyurethane caulking.
3. Apply a roof primer at the rate of about 1/3 gallon per 100sqft.
4. Apply and back roll the roof coating at a rate of at least 2 gallons per 100sqft 2.5 is better but no more than 3 gallons per 100sqft.