We made a huge mistake, I think, in getting our central heating put in ten years ago, and not stripping the old wall paper off/redecorating first. I now want to get behind them, but the plumber used quarter inch piping - easier for him to feed through when installing, but is it really safe to lift off radiators to redecorate, when there is only a quarter inch pipe which will be bent/strained once the radiator is off the wall? Am I going to end up with an expensive plumbers bill, if we try to get access behind the radiators, or can we just lift them off and lean them forward on something, whilst we decorate?