| Heat transfer in steel buildings occurs in three | | | | installation. Permeability of a facing is connected to |
| ways. They are conduction, convection and | | | | the rate of water vapor. Durability refers to the |
| radiation. These problems can be regulated using | | | | physical quality of the facing material. The most |
| proper insulation. Steel building insulation slows | | | | commonly used facing material is polypropylene. |
| down the movement of heat. Insulation can | | | | The relative effectiveness of an insulator is |
| regulate the temperature of these buildings. Steel | | | | determined by R value. R value is used to |
| building insulation also helps to diminish sound by | | | | measure the total thermal transmittance of a |
| sound absorption. The type and amount of | | | | material. |
| insulation depends on the location of steel buildings. | | | | Reflective insulation is another method for steel |
| Steel building insulation provides energy savings, | | | | building insulation. Reflective insulation is used to |
| noise control and condensation control. There are | | | | maintain the natural temperature. Heat transfer |
| different methods for steel building insulation. | | | | can be regulated using reflective insulation. |
| The most widely used method for insulation is | | | | Reflective insulation is composed of two outer |
| fiberglass insulation. Long strand fiberglass blankets | | | | layers of aluminum foil and an inner layer of inert |
| are used for steel building insulation. Fiberglass is | | | | material. Polyethylene or plastic can be used as |
| laminated on one side to a vapor barrier facing. | | | | the inner layer. Fiberglass inner layer gives more |
| Fiberglass insulation depends on the thickness of | | | | insulation power. Reflective insulation is not |
| the blanket and the type of facing material. The | | | | affected by humidity. It requires no special |
| quality of the fiberglass blanket is related to its | | | | handling or clothing and is effective in both warm |
| thickness. Heat flow slows down with the | | | | and cold weather. |
| increasing thickness of insulation. | | | | Spray on insulation is a method for steel building |
| Facing material is important in fiberglass insulation | | | | insulation. It can be used for fire protection, |
| method. The main function of the facing material | | | | moisture and thermal insulation. Spray on insulation |
| is to act as a vapor barrier. Different facing | | | | consists of a mineral fibre and polyvinyl alcohol. |
| materials vary in their workability, permeability and | | | | The surface of steel is sprayed using a machine. |
| durability. The workability of a facing material is | | | | Polyurethane spry foam can be used for steel |
| related to the temperature conditions required for | | | | building insulation. |