so ley me get this right.
if i go to the DIY shop i must ask the guy for undercoat paint that is emulsion based riiiiiiiiiight? is it neccsary to say its a primer (i dont know fuckol bout paints).and foylon which is most reflective , is that a kind of paint to? so all and all u guys would say that paint is a beter option then foil cause of heat and reflection capabilities?