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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 - Building insulation

Maintaining acceptable temperatures in buildings (by heating and cooling) uses a large proportion of global energy consumption. When well insulated, a building:

* is energy-efficient, thus saving the owner money.
* provides more uniform temperatures throughout the space. There is less temperature gradient both vertically (between ankle height and head height) and horizontally from exterior walls, ceilings and windows to the interior walls, thus producing a more comfortable occupant environment when outside temperatures are extremely cold or hot.
* has minimal recurring expense. Unlike heating and cooling equipment, insulation is permanent and does not require maintenance, upkeep, or adjustment.

Many forms of thermal insulation also reduce noise and vibration, both coming from the outside and from other rooms inside a building, thus producing a more comfortable environment.

Window insulation film can be applied in weatherization applications to reduce incoming thermal radiation in summer and loss in winter.

In industry, energy has to be expended to raise, lower, or maintain the temperature of objects or process fluids. If these are not insulated, this increases the energy requirements of a process, and therefore the cost and environmental impact.

Eagle Shield Industries terms and definitions:

LEED

LEED -- Leadership in Energy and Environmental Design-- is a rating system developed by the US Green Building Council.

Gable End Walls

The triangular end of an exterior wall above the eaves. (The wall with the pointy part.)

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High Pressure Steam

Steam at or above 75 pounds per square inch gauge pressure.

Cellular Insulation

Insulation composed of small, individual cells separated from each other. The cellular material may be glass or plastic such as polystyrene, polyurethane, polyisocyanurate or elastomeric.

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Consideration of materials used

Factors affecting the type and amount of insulation to use in a building include:

* Climate
* Ease of installation
* Durability - resistance to degradation from compression, moisture, decomposition, etc.
* Ease of replacement at end of life
* Cost effectiveness
* Toxicity
* Flammability
* Environmental impact and sustainability

Often a combination of materials are used to achieve an optimum solution and there are products which combine different types of insulation into a single form.

Eagle Shield Insulation - Measurement of thermal conductivity
There are a number of ways to measure thermal conductivity. Each of these is suitable for a limited range of materials, depending on the thermal properties and the medium temperature. There is a distinction between steady-state and transient techniques.

In general, steady-state techniques are useful when the temperature of the material does not change with time. This makes the signal analysis straightforward (steady state implies constant signals). The disadvantage is that a well-engineered experimental setup is usually needed. The Divided Bar (various types) is the most common device used for consolidated rock samples.

The transient techniques perform a measurement during the process of heating up. Their advantage is quicker measurements. Transient methods are usually carried out by needle probes. A method described by Angstrom involves rapidly cycling the temperature from hot to cold and back and measuring the temperature change as the heat propagates along a thin strip of material in a vacuum.

Eagle Shield Reflective Insulation terms and definitions:

Lap Adhesive

The adhesive used to seal the butt joints and laps of insulation jackets.

Relative Humidity

A measure of the amount of moisture in the air with respect to the temperature. It is the ratio of the moisture present to the maximum amount of moisture the air can hold at that temperature.

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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.

Alkalinity

The quality of a material to be basic or alkaline when exposed to moisture or water producing a blue reaction to litmus paper. A pH measure greater than 7.0.

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