Hmm... That's a good idea. I have an extra roll of that stuff.For the first 3 weeks of their life, they are living in a tote in my spare bathroom, in which I turn up the heat to 75 degrees and they have a chick mat heater under half of the wood chips. Once they are 3 weeks old they get kicked out to the coop. In the coop I have 2nd level in the insulated area that is 3 feet high by 4 foot by 8 foot and this is wrapped with silver reflective wrap and they have another chick heater mat. It works.....not ideal yet. I would love for some larger hatches to make this work better.