1 hour ago Sandy asked ... Replace vertical gear on Singer Fashion Mate 252?    |    Blaablaa asked ... How can I fix?    |    pete asked ... Flymo 330 turboglide?    |    keith asked ... Fuseboard( s) location of renault trafic t1100 1993?    |    Janet asked ... Neff B1641 door not closing at top?    |    Click here to ask your question

what causes black scorch marks above convector radiators?

on the walls just above convector radiators there appears to be black scorch marks, what would be causing this to happen?
chris, January 2006
dust burning off.

steve b, February 2006