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What do you put behind cast iron baseboard radiators?

howdiho Member Posts: 2
Hi, I am so glad to have found this site.

I am refinishing my basement and I have cast iron baseboard radiators (about 20 ft long) in one of the rooms that is a walk out. The wall that it will be against is concrete with studs in between.

So my 1st question is... what do I use to reflect the heat back into the room and where do I put it? I was told by one person to nail aluminum flashing BEHIND the drywall...but that doesn't seem right.

The 2nd question I put insulation behind the radiator/drywall?

Thanks in advance for the advice, Matt
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