On Sun, 5 Aug 2012 17:51:57 +0100, geoff wrote:


The last time the heating was used I believe all the rads heated up ok
(because it looks like it was originally designed properly you don't
even seem to need to bleed the rads (and all horizontal pipes in the
loft seem to fall away from the header etc)).

Check the rads to see if the bottoms are cold when the top is hot, i.e
they are sludged up

Will do.

descaling/ defurring removes limescale build up

Ok, thanks.

Cheers, T i m