Black or white cotton insulation foil insulation cotton which is better?
Just from the insulation effect, cotton insulation with aluminum foil better. But cotton aluminum foil will reflect heat, so the engine compartment of higher temperature some variations, accelerated aging lines and rubber parts of the cabin, so in the long run, fitted black cotton insulation would be better.
You said should be sound damping plate, aluminum foil + black (white) butyl rubber + sticker structure. Damping plate black than white good.
Butyl collagen The white transparent plastic blocks, finished colloids can appear black because of the production process by adding carbon black, carbon black can improve the elastic colloid prolong life.
