would anyone have any idea why i have black marks behind all my radiators right up the wall? it is a brand new build and looks awful? i have gas heating.
If you burn candles, some of them will cause a waxy/oiler deposit on the walls. The deposit behind/above radiators will remain sticky, and dust sticks to it.
Scratch, December 2008
Usually caused by heat staining. How hot are you running the system?
