Here is a post relate to chicken eating insulation. You may want to ask other members first before proceed this path.
https://www.backyardchickens.com/forum/viewtopic.php?id=215857
Quote:
What kind of chickens are you keeping? I should of mentioned I will only have about 5 bantams. From what I'm told they dont do that great in the winter. I could be mistaken.
I have RIR, Cochin, Brahma, Delaware, and Marans. I also painted my both inside and outside with Sherwin...
I built my coop with 3/4" plywood box without the insulation and no heat source at night. The chickens doing just fine so far. The coldest temperature is around 10F.