Had never considdered radiant walls before might just have to try it(as well as floor) in our loft conversion.
We have pipework at 100mm spacing in the ground floor screed, but could only do 200mm spacing on the first floor due to that being the the standard spacing for Myson aluminium heat spreaders.
This has given us the issue of a warm ground floor and not quite warm enough first floor when running very low flow temps (Max 28C).
If I use radiant walls as well as floors in the loft this might just give out enough heat at such low flow temps(ASHP cannot manage any more) and with the space above the first floor heated, that will hopefully reach temp too.
Steve
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