Once more, primer might have differing environmental requirements to a base coat. Prime coat (e.g. polyurethane) might be various in its environmental sensitivities to base coat. Apart from temperature concerns, a standard guideline is that you mustn't use Epoxy Resin Ground Paint When the humidity is larger than 85% or even the temperature is less than five°C. https://www.propanraya.com/id/produk/epoxy-fast-dry