Before spraying, it’s essential to note that edding 5200 permanent spray is an acrylic paint intended largely for decorative purposes. Front doors, bicycles, cars etc. commonly leave the factory with an extremely hard powder coating finish. Powder coating has a much greater resistance to impact and scratching and is not comparable with an acrylic paint finish. This applies regardless of whether the acrylic paint is applied using a brush or spray. You can increase the durability of edding spray by using a primer suitable for the material of whatever it is you want to paint. We would advise, however, that after a period of use your painted item will probably show signs of wear. Our tip: please enquire at your specialist paint store about tough and robust paints specially designed to withstand the heavy use that front doors, etc. have to withstand.