Need help with DIY cooler insulation
Long time fan, first time poster. I'm looking to convert a cool-looking vintage toolbox into a heavy duty lunchbox. I'm currently prepping the metal for paint and looking into what I can use to insulate the box. I've thought of:
* spray foam insulation: Good coverage and thermal protection, but not water-resistant enough (think condensation)
* fiberglass insulation (pink stuff): Good, but unsure about how cold it will keep things
* styrofoam: probably the one inch sheets used for basement walls below grade. Best solution so far.
Before I do something that will likely mean stripping the box clean and starting over, I thought it best to see what others might have to say about this. Any and all help is greatly appreciated!