theres a pic of the cab in my sig let me know if u think i should bother.Only thing about foil is if its crumpled it'll create hot spots and burn your plants. If the enclosure is fairly small I'd just not do it at all.
I had white walls in my cupboard which i heard was fine, but decided to cover the walls with a safety blanket i bought for £2-3 from amazon i think, one blanket managed to do my with grow area, its worked fine with no issues really cheap alternative might be worth a tryi know use mylar etc etc , im broke as fuck no transport and no hydro shops im using cfl , should i add tin foil to reflect the light ? i know its a nono or have been told that but its all i have and the wood of the cab is holding heat in. :S
I'd paint it white. Would be easier than tinfoil.theres a pic of the cab in my sig let me know if u think i should bother.