Are lightweight thermal mass systems effective?
We have an on-going discussion about Thermal Mass Systems that is getting nowhere. Heavy-weight mass walls and floors are easy for all to understand, like concrete, rock, adobe, rammed earth, water, etc.; however the issues we have is with Light-weight mass like some ICFs and CIPs. How can an INSULATED product be an efficient thermal mass system at the same time? If the insulation is preventing the concrete core to get any heat/cold, how can that provide good thermal mass results. Also with products like AAC, if they are insulated CIPs, how can they be good thermal mass products?