Hi Folks. In our soon to be purchased 1965 built bungalow we are blessed by a 2 year old CH system, one with 15mm pipes everywhere, a real horror. As I intend to fit a floating chipboard floor on Celotex, to improve floor insulation as all of the floors are un-insulated concrete, I’m wondering about running pipes in the Celotex – but what size?
I’d like to run 22mm to a manifold and radiate outwards in a 2 pipe system to each radiator. Chasing the Celotex with a router seems easy but what size pipe to use. 10mm copper was the first choice but I’ve just seen what I think is 10mm underfloor heating pipe. It would be more corrosion resistant and easier to run but it has a much smaller bore, maybe the same as 8mm copper. Would this small bore still be OK with the existing pump (not sure of its details), and would the pipes block with in-system gung.
So 10mm copper, 10mm plastic or 8mm copper that is the question? Unless you can think of other questions I should be asking.
I’d like to run 22mm to a manifold and radiate outwards in a 2 pipe system to each radiator. Chasing the Celotex with a router seems easy but what size pipe to use. 10mm copper was the first choice but I’ve just seen what I think is 10mm underfloor heating pipe. It would be more corrosion resistant and easier to run but it has a much smaller bore, maybe the same as 8mm copper. Would this small bore still be OK with the existing pump (not sure of its details), and would the pipes block with in-system gung.
So 10mm copper, 10mm plastic or 8mm copper that is the question? Unless you can think of other questions I should be asking.
