That was a good reminder for me that when working on an LCA, it is not enough to just look at the material itself. Sometimes the chemistry behind the material matters just as much. And this is also why looking only at A1-A3 can sometimes give you an incomplete picture. If you work with LCAs, EPDs, insulation or building decarbonization, blowing agents are definitely something worth checking. Sometimes the biggest climate impact in a product isn't the thing you can see. *It's what's trapped inside it.*
