The Basics

seasons diagramKOZZEEWRAP™ is used as an insulation against radiant heat transfer and can be used to its greatest advantage in instances where radiation is the predominant means of heat transfer. The bright aluminum surface of all KOZZEEWRAP™   products provide insulation properties in two ways:

  • As an excellent reflector of all long wave radiant heat that strikes it -up to 97% of all radiant heat.
  • By re-radiating only 3% of heat in which it comes into close physical contact, compared with approximately 90% re-radiation of traditional insulating materials at the same temperature.

How does KOZZEEWRAP™ work?
Unlike mass insulation which only slows down or resists heat transfer, KOZZEEWRAP™ reflects heat. Heat naturally turns cold so the problem is to keep the heat in during winter and out during summer. There are three ways in which heat transfers from warm space to cold space:

  • Conduction: direct heat flow through a solid object like a wall or ceiling.
  • Convection: heat movement through air occurring when air is warmed. Warm air expands, becomes less dense and rises.
  • Radiation: movement of heat rays across air spaces from one warm object to another cooler one. The heat we feel from a wood stove or quartz space heater is an example of radiant heat.

All objects and bodies give off radiant heat! Even the insulation in your attic gives off radiant heat to the cold attic space in winter and to the living space in the summer. Regular insulation won’t stop radiant heat loss. It must be reflected with a radiant barrier.

What is the “R” Value of KOZZEEWRAP™?
The “R” value depends on the number and size of the air spaces surrounding the Radiant Barrier and on the direction of the heat flow. Since KOZZEEWRAP™ is usually installed on top of the existing mass insulation, its R-value is a moot point. Its ability to reflect heat makes KOZZEEWRAP™ a great energy saver.

How can KOZZEEWRAP™ keep me warmer in winter?

Just like wrapping a baked potato in aluminum foil keeps it warm longer by holding in the heat, covering your attic insulation with Radiant Barrier holds the heat in the house.  Another analogy would be that in winter Radiant Barrier works just like a space blanket, which, although very thin and lightweight, holds in your body heat. A thin space blanket can keep you warmer than several heavy blankets.

How does it keep heat out in summer?

Like a space suit, KOZZEEWRAP™ reflects the sun’s heat before it can warm up the insulation in your attic. When the insulation stays cooler, your house will too. Just like a space suit or thermos bottle, the reflective surface inhibits radiant heat transfer. If the bottle starts out hot, it stays hot because very little heat is transferred to the cooler outside. If it starts out cold, it stays cold because very little heat is transferred from the warmer outside.

Will the roof be hotter with KOZZEEWRAP™ in my attic?

No. Field tests in the south where Radiant Barrier is used extensively, shows no difference in roof temperature.

Do I have to remove my old insulation to install Radiant Barrier?

No. KOZZEEWRAP™ actually makes your present insulation more effective.

Where do you install KOZZEEWRAP™?

KOZZEEWRAP™ can be laid over your present attic insulation like a blanket or stapled under your rafters or crawl space, installed in your walls and over existing concrete floors and under proposed new concrete floors.

Isn’t foil-faced fiberglass just as good as KOZZEEWRAP™?

No. The foil on fiberglass is in direct contact with the attic floor. Aluminum foil becomes more conductive when in contact with a solid surface. The air space facing the foil surface is of primary importance.

 I already have plenty of insulation in my attic. Do I really need KOZZEEWRAP™?

Regardless of how much insulation you have in your attic, adding KOZZEEWRAP™ will save on heating and cooling expense and keep you much more comfortable. Energy savings for heating and cooling can vary from 10% to 45% depending upon a number of factors including climate, materials used, site, building configuration, family size, and lifestyle, etc.


Reflecting Warmth