Just paintedmy copper pipes with radiator paint and realised i was supposed to prime first! What will happen?
It all depends on the condition of the pipes. New pipes might hold the paint for a while but old dirty pipes will not. The worst that could happen is the paint will flake off. When this happens just sand off the remaining paint down to shiny metal prime and repaint. Also some copper pipes come with a coating on them to prevent the green corrosion that goes along with copper. If it is the varnish style you should be alright but if its the oil coating your paint will surely fall off. Your hands will get an oily film on them when you touch it. I would sand off the paint and start over for a permanent solution
