How Good of an Insulator is Bubble Wrap? Bubble wrap is an excellent insulator thanks to small pockets of air trapped within the bubbles. During the winter, bubble wrap can effectively protect your home or greenhouse against the cold penetrating inside and prevent heat from moving out.Click to see full answer. Also, why is bubble wrap a bad insulator of heat?It is not a good thermal insulator. It does some airsealing which causes some decreases in energy use. The use as an air sealing solution ignores the concern for vapor issues. Visqueen sheeting is not used in walls and attics of buildings without damage from trapped moisture, and mold.One may also ask, how does bubble wrap insulate heat? As an alternative to insulating shades, bubble wrap provides a pocket of air to prevent cold and heat from moving in and out of your home. Recommendations from Build it Solar include using larger bubbles and using a film of water (applied via spray bottle) to get the bubble wrap to stick. Likewise, is bubble wrap a good conductor of heat? Air and Bubble Paper Air, particularly air in a confined space, is a good insulator because the air inside the space tends to resist temperature changes. Bubble paper is nothing more than plastic wrapped around many individual volumes of air; thus, the air inside helps bubble wrap to resist temperature changes.Is aluminum foil a good insulator of heat?Its solar radiation absorption coefficient is very low, which can insulate most of the heat transfer. Aluminum foil, also called tin foil, makes an excellent insulator, and in some situations, it works better than materials like cotton or paper.