Kai casswell Posted July 19, 2023 Share Posted July 19, 2023 Has anyone injected expanding foam into steel columns to help with heat loss? Link to comment Share on other sites More sharing options...
JohnMo Posted July 19, 2023 Share Posted July 19, 2023 Injection of foam will have zero effect on heat transfer or losses. You need to wrap the column in insulation. Something like 25mm PIR and then plasterboard. 1 Link to comment Share on other sites More sharing options...
IanR Posted July 19, 2023 Share Posted July 19, 2023 (edited) 41 minutes ago, Kai casswell said: Has anyone injected expanding foam into steel columns to help with heat loss? I boxed in my steels and sprayed expanding foam in to full fill the volume. Edited July 19, 2023 by IanR Link to comment Share on other sites More sharing options...
Kai casswell Posted July 19, 2023 Author Share Posted July 19, 2023 Thanks. BC suggested injecting them as well as covering. Im trying to Minimise all heat loss. Maybe it’s overkill. Just wondered if an else had done it Link to comment Share on other sites More sharing options...
Kai casswell Posted July 19, 2023 Author Share Posted July 19, 2023 It is connected to 16 other steels. All within thermal envelope. But the foundation it’s on is 2m3 concrete on the ground below but this is within the foundation of the extension Link to comment Share on other sites More sharing options...
nod Posted July 19, 2023 Share Posted July 19, 2023 Don’t put anything in it Build a frame around it that is totally independent of the steel Board with 37 mil insulated board Insulating can cause sweating 1 Link to comment Share on other sites More sharing options...
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