Painting external doors
It's vital that your external door is treated with at least one primer coat, two undercoats and a top coat. We recommend that you do this prior to installation with a further top coat once fitted.
All cut outs and edges should be treated with 3 extra coats of finishing treatment as these are more susceptible to moisture.
Lightly sand the door between applying coats, always follow the manufacture guidelines for timings between applying new coats as drying times may vary.
Remember to treat all sides of the door, and not just the external facing side.
The same finishing product should be used on both sides of the door as different products can cause the timber to react differently and offer different levels of protection which may create an imbalance with the door.