hawkins388 said:
Do i have to use radiator paint on my radiators? or can i use an undercoat followed by gloss paint.
No! dont buy (expensive) special paint. Just use any conventional gloss paint. (solvent based).
Dont use undercoat on heated surfaces it will soften, crack and flake. Just clean surface and give one or two coats of Gloss. I tend to thin a little and apply librally making sure you lay off bottom to top evenly and gently to give a brushline free finish.
Whatever you put on will yellow in time.
good luck.