Once again, primer may have differing environmental needs to the foundation coat. Major coat (e.g. polyurethane) may be diverse in its environmental sensitivities to foundation coat. Other than temperature considerations, a general guideline is that you should not apply Epoxy Resin Floor Paint if the humidity is larger than 85% or even the temperature is below five°C. https://www.propanraya.com/id/produk/epoxy-fast-dry