Time to enclose it all

[Gocntry]

Just checked out that R 21 from your link to Lowes and it is some good insulation. It has a lot higher R rating than my Styrofoam I was surprised. And at not much more cost. Thanks for the tip, might have to check that stuff out and hopefully get some. Probably a lot easier to work with than Styrofoam too.

That stuff is thin and easily cut with scissors, you can cut it to any shape and size needed with no effort.

It's almost like aluminum foil with a thin padding in it.