Thanks you guys for all the brain storming!!
Yes the sun shade is very easy to find in here, as it is a very comment stuff! Some of them i dont know is it a foil laminated or just spray on, i think laminated will be more efficiency. But i will check them out!
I have also got the similar idea if i cant find the Reflectix, my idea was use those thin soft foam and stick with those foil sticker, the foil sticker is quit comment in here to warp around for the air con piping! But i dont know how the out come of the weight! Let see
Why i asking the hood insulation coz i find something that is quite thin in here, around 0.7cm so that's why i questioned on this topic. Or may be the material is different then the state!
Thx Mike, i will look for the Thermawarp in here too!
Haha hope can make something out for this winter!!