Insulation in steel columns.

[Kai casswell]

Has anyone injected expanding foam into steel columns to help with heat loss? 
 

[JohnMo]

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.

[IanR]

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

[Kai casswell]

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 

[Kai casswell]

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 

[nod]

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