CH radiator

[Matheous-2]

We have a 'piggy backed' radiator which is cool at the bottom & warm at the top. Have tried bleeding probably a couple of pints of water with no sign of 'air' coming out -yet still feels the same.....Any help would be appreciated....

[The Builder]

Sorry if I'm being dense, Mathious, but I've not heard of that. How does it differ from a "normal" rad?

[Matheous-2]

It wasn't originally installed with the others....

[The Builder]

Ok. Quite possibly it's not getting its fair share of the hot water. You may need to balance the rads, or at the very least, turn down the lockshield valve (opposite end to the TRV with the numbers on it) on the nearest rad(s) to the affected one.
Try turning off a couple of the nearest rads to see if this one gets a good supply all of its own.

[Matheous-2]

Thanks 'The Builder' -not to clued up on balancing, but can hopefully ask the gas people who maintain our CH to resolve this....