Out of interest, why was the pipework not done under the floor??? Are the floors stone??? If so, I have sympathy with why he has done it this way.... Doesn't really change anything tho....
I realise this is a stupid question, but are those isolation valves on either side???? and if so are they fully open???
The floor is concrete. The pipes come from inside the wall you can see in the picture as they were before.
Yer they are iso valves and fully open Like say that radiator in the picture is nice and toasty its just the 2 new ones. Looks like im going to have to try and find someone to get it sorted.
You don't have to rip it all out, just find where he has Tee'd off from, this needs to be extended to feed from the main flow and return for the two additional rads. But again take all this with a pinch of salt we can only assume what is going on but from experience this is a common mistake a lot of people do to add additional rads.
How many rads do you have in total off the 15mm as you can usually get away with 4 reasonable sized rads .
I KNOW you have already tried it but try it again with just heating on and hot water off turn EVERY rad off except one of those playing up and force any air trapped in pipework out.(if there is a bypass, turn off that as well)
I have tryed turning the rest of the rads off and just leaving the 2 new ones on to force any air out of the system (bypass also closed), they then heat up really well. I think there would only be 3 rads off running off this 15mm run
I would do this myself (i was going to but though a nice £60 to someone who i though would know best would save me the hassle) but im unsure where this main "feed and return" pipe would be? Is it likely to be hiding inside the wall?
Going to post up on mybuilder see if i can get any good trades people on there.
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