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Welcome. My name is ***** ***** would be glad to assist.
Can you post a picture of the panel?
I am not sure I understand the situation.
You have the panel on a block wall, but yet there are no studs and everything is mounted directly to the block including the paneling, correct?.
Where is the air coming from on a solid wall?
I think I may be missing a piece of the puzzle here, so bear with me.
Appreciate the picture, it doesnt show anything except a finished room.
No way to make any determination with that.
Would need to actually see how the panel is mounted etc. to see if a solution is possible.
The air has to come through the solid block to infiltrate the room, is the room underground or above ground?
Ok, thanks. I can see the surroundings now.
I would not use any foam panels, it is way too toxic if melted or overheated to a flash point.
Not the right insulation around electrical.
You can use any fiberglass insulation that will fit in the area, just none with a paper backing.
That is what is used in the walls with electrical all over the home.
They also sell fire resistant panels as well which can be placed behind the wood if needed.
CLICK HERE for an example on the fire resistant, just check with your local building supply, they will have some type available.
I do not suggest any foam of any kind around the panel. Especially the spray type foam, if you read the label , it has a low ignition temperature on most all of them.
There should be very little influx of cold air in any small gaps, it is a block wall and appears to be below ground level
Use the fiberglass batting insulation and you can push it into small spaces