Eagle Shield Reflective Insulation

Eagle Shield

Limited capacity for insulation
A building design may have limited capacity for insulation in some areas of the structure. A common construction design is based on stud walls, in which thermal bridges are common in wood or steel studs and joists, which are typically fastened with metal. Notable areas that most commonly lack sufficient insulation are the corners of buildings, and areas where insulation has been removed or displaced to make room for system infrastructure, such as electrical boxes (outlets and light switches), plumbing, fire alarm equipment, etc.

Eagle Shield Insulation – Shingle Temperature

One common misconception regarding radiant barrier is that the heat reflecting off the radiant barrier back out the roof has the potential to increase the roof temperature and possibly damage the shingles. This is simply not the case. Performance testing by Florida Solar Energy Center conclusively proved that the increase in temperature at the hottest part of the day was no more than about 5 degrees F. In fact, this study showed that radiant barrier had the potential to decrease the roof temperature once the sun went down because it was preventing the heat loss through the roof. RIMA International wrote a technical paper on the subject, where they collected statements from the largest roofing manufacturers, and none said that radiant barrier would in any way affect the warranty of the shingles(Garrett Harwood article)

Eagle Shield Industries terms and definitions:

Cellular Elastomeric

Insulation composed principally of natural or synthetic elastomers, or both, processed to form a flexible, semi-rigid or rigid foam that has a closed-cell structure.

Cellular Polystyrene

Insulation composed principally of polymerized styrene resin processed to form a rigid foam having a predominately closed-cell structure.

Eagle Shield Reflective Insulation

Water Resistant

Capable of withstanding limited exposure to water. Garrett Harwood
Mean Temperature

Sum of the cold surface temperature and the hot surface temperature divided by two. (Thermal conductivity charts are calculated to use mean temperatures).

For more information check the following articles: Eagle Shield, Eagle Shield Franchise Group and Eagle Shield Radiant Barrier.

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Highly Professional Solutions from Eagle Shield Industries

Eagle Shield Insulation

Thermal bridge
Thermal bridges can also be created by uncoordinated construction, for example by closing off parts of external walls before they are fully insulated. The existence of inaccessible voids within the wall cavity which are devoid of insulation can be a source of thermal bridging.

Some forms of insulation transfer heat more readily when wet, and can therefore also form a thermal bridge in this state.

Eagle Shield – Attic Dust Accumulation

When laying a radiant barrier over the insulation on the attic floor, it is possible for dust to accumulate on the top side. Many factors like the dust particle size, dust composition and the amount of ventilation in the attic will affect how dust accumulates and the ultimate performance of radiant barrier in the attic. A study by Tennessee Valley Authority mechanically applied a small amount of dust over a radiant barrier and found no significant effect when testing for performance. However, TVA referenced a previous study which stated it was possible for the radiant barrier to collect so much dust that its reflectivity could be decreased by nearly half. It is not true that a double-sided radiant barrier on the attic floor is immune to the dust concern. The TVA study also tested a double-sided radiant barrier with black plastic draped on top to simulate a heavy dust accumulation, as well as a single-sided radiant barrier with heavy kraft paper on the top. The test indicated that the radiant barrier was not performing, and the small air spaces created between the peaks of the insulation were not sufficient to block radiant heat. Dust should be a factor of consideration in determining the radiant barrier attic application that is right for you.

Eagle Shield Franchise Group terms and definitions:

Reflective Insulation

Insulation depending for its performance upon reduction of radiant heat transfer across air spaces by use of one or more surfaces of high reflectance and low emittance.


Building materials installed to resist the free passage of flame of flame and gasses to other areas of the building through concealed spaces.

Eagle Shield Radiant Barrier

Transmittance, Thermal

The heat transmission in unit time through unit area of a material or construction and the boundary air films, induced by unit temperature difference between the environments on each side.

Weather Barrier

A breather jacket or coating which allows passage of water vapor and protects from atmospheric conditions.

For more information check the following articles: Eagle Shield Radiant Barrier, Eagle Shield Reflective Insulation and Eagle Shield Industries.

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