Insulation to use behind recessed sunrads?

Jim45

I need to put some insulation behind my sunrads which are recessed into the wall. There was no insulation put in when my contractor installed these several years ago. I've heard there is foil backed insulation I should use. Would someone be able to send me a link so I can do this as a DIY project and buy the right stuff? I assume I can get it a Home Depot?

Paul S_3

Go to your local plumbing supply that sells the sunrads they should have it in stock

Jim45

Hmm. Honestly, I 've never seen Sunrads in plumbing stories. Only baseboard is stocked every store I've been too. Sunrads are sold direct from the manufacturer. I suppose this isn't an obvious question? Any takers?

kcopp

How much room do you have?
If you can get 1/2" poly iso board in back I would use that.
It is usually foil faced.

Jim45

thanks Kcopp. I can pull them out as much as i need to. They are fully recessed now. can the radiator touch the board? so it's flush against it? could I go to inch for more insulation? Is this the right stuff? https://www.insulation4us.com/thermasheath-3-r-3-2-1-2-in-x-4ft-x-8ft-polyiso-rigid-foam-insulation-board.html?gclid=CKvqw_bjzcsCFVg6gQodQ44Hig

Thanks for the help.