Heat Shielding engine bay.

has anyone on here Heat shielded thier engine bay?

 

I've thought about heat shielding the firewall, but not sure what to use under the hood. I was thinking of some high temp foil backed insulation and a can of spray glue or maybe some foil sided peel and seal under carpet on the inside. I'd be interested in any other paths to take.
Doug

 

WHY?? Burning your toes?

 

haha I've got tired of feeling the engine heat in the summer time.