What is Low-E Insulation?

LOW-E...The secret to super insulated buildings

LOW-E is a patented insulation consisting of a closed micro-cell foam core that is heat laminated to foil or polyethylene facings.

The heat lamination means there are no adhesives to add fuel to the fire.

The closed cell core is not a honeycomb design. That means condensation cannot occur in the core of the product.

The closed micro-cell foam structure aids in maintaining the products installed R-Value because when one cell is popped the air fills the cell next to it.

The closed micro-cell core maintains it's shape and doesn't sag after installation.

When compressed, the core design allows the product to bounce back to its original shape.

The core design also recovers when punctured and helps seal around fasteners.

The extended staple/flanges offered on some products makes installation much easier and can even be installed in damp weather unlike edges that require taping

We offer the largest variety of durable, long lasting, reflective installation products on the market today!



LOW-E products offer Class A, Class 1 fire ratings.

LOW-E provides a continuous thermal break around purlins and girts in wood and steel frame structures.

LOW-E is so thin that oil canning of the metal is never a problem.

LOW-E is an excellent vapor barriers and help control condensation.

The reflective surface and the significant R-Values keep buildings cool in the summer and warm in the winter.

The strong lightweight rolls make installation a breeze and don't easily tear, even in windy conditions.

LOW-E can be installed alone and outperform up to 3" - 4" of fiberglass or be combined with fiberglass for higher R-Value requirements and simplify installations.

To make installation easy, the rolls are available in various widths and thickness with or without an extended staple flange.

The closed micro-cell foam seals tightly around fasteners and doesn't wick moisture into the core of the insulation.

Deadens sound.

LOW-E is bird, mice and insect reisistant.


How Low-E Works

The primary function of LOW-E INSULATION is to reduce, by reflection, the amount of radiant energy transfer through your building envelope.

Reflective Insulation and R-Values

Reflective insulation products depend on several things to obtain their R-Value. The E-Value of the aluminum surface, the R-Value of the core material and the size of the enclosed or open-air spaces facing the aluminum.

All of these components are referred to as a system R-Value. A 3/4" air space facing the aluminum is ideal because convection currents cannot begin to move in an air space this small. The aluminum actually increases the R-Value of the air space it faces.

That is why the tested R-Values are so high on LOW-E INSULATION.

Keeping this in mind, you can see the importance of making certain an air space is maintained facing the aluminum on both sides if at all possible. The air space also works as an insulating thermal break.

A good example of this would be an old fashion Thermos® bottle. Based on the same principle as reflective insulation, it consists of aluminized glass, still air and aluminized glass.

Regardless of how high the R-Value is on an insulation product, it has no ability to reflect radiant energy. R-Value is simply a resistance to heat transfer.

Even a very high R-Value doesn't stop any type of heat transfer, it simply slows it down. You cannot ignore the need for good R-Values, but by addressing only the R-Value, a large percentage of energy transfer is being ignored.

Of the three types of energy transfer (conduction, convection and radiant energy) radiant energy is the greatest source of heat gain in the summer and heat loss in the winter.

For Optimum thermal performance, you need an insulation product that has
high R-Values and low E-Values.

The ability of various materials to reflect instead of absorbing and emitting the radiant energy is measured by E-Value.

Installed alone, LOW-E INSULATION products can outperform up to 3" - 4" of fiberglass insulation because they reflect the radiant energy by having a very LOW-E value as well as significant R-Value. It would be as serious a mistake to ignore the R-Value requirements as it would be to ignore insulating to protect just against radiant energy where very high R-Values are required.

That is why you will find many applications in these guidelines that are combination systems including LOW-E and a fiberglass product.