Do I need to use a coat of paint) primer over the Dap drydex(pink)spackling? (after the spakling paste drys?,I'm using this on my porch wood railings.

DryDex Spackling must be painted with a high quality exterior paint coating (after it has dried and prior to water exposure).

DryDex Spackling must be painted with a high quality exterior paint coating (after it has dried and prior to water exposure ).