Problem is now resolved. I didn't go for bungs in the end as it finally dawned on me that I really should also be replacing the TRV (as it looked to be faulty) rather than just getting the radiator back in place. Drained below the radiator before carrying out the work then carried out the...
Ah. :idea: So you're talking about the pipes going in and out of the small tank up in my loft? Sounds like a good idea. Do I need to find a well fitting cork (unlikely) or is it going to be easy to lash a temporary bung up from some plumbers putty and a piece of sticky backed plastic...
It's an open system, but what do you mean by "bung the system"?
The radiator is on first floor, so I'm guessing I will need to drain down to below this level.
I took off bedroom radiator to decorate - was rewarded by lots of water coming out of TRV, so had no alternative but to work quickly and get the pipe ends capped off as quickly as possible.
I then forgot all about it until today, when I finally got around to thinking about putting the...