What is the main cause of "pinholing" or blistering when applying sealcoat on hot asphalt pavement?

1. Moisture escaping rapidly from damp pavement or air trapped in open pores.
2. Applying sealcoat when ambient air temperature is below 40 degrees Fahrenheit.
3. Adding too much silica sand aggregate into the sealcoat mixture tank.
4. Using waterborne paint instead of oil-based traffic line paint for striping.