how boot this?

5/16" thick, seven layer, reflective insulation
Two outer layers of aluminum foil reflect 97% of radiant heat. Each layer of foil is bonded to a tough layer of polyethylene for strength
Two inner layers of insulating bubble pack resist conductive heat flow while a center layer of polyethylene gives Reflectix® high reliability and strength
AngryJohnny Reviewed by AngryJohnny on . Reflective walls A mate of mine assures me that brilliant white emultion paint is just as effective as foil for reflecting light. I've tryed both in my room. I'm using white at present and this has had no negative effects on yeild or quality. It's much easier and cheaper to paint walls white, rather than pissing about with foil. Rating: 5