How Insulation Works

Home Insulation

Naturally, heat flows from a warmer space to a cooler area. During winter, heat flows from all heated living spaces to unheated garages, attics and basements. Heat can also enter through interior walls, floors, and ceilings and wherever there is temperature difference. During the summer time, heat flows from outside to the interior of a house.

To maintain a comfortable home, we run the heating system to replace the heat lost in the winter and we run the cooling system to remove the heat gained in the summer. Proper insulation of your home will reduce this heat flow by supplying an effective resistance to the flow of heat. Air sealing contractors and insulation contractors are thoroughly familiar with this phenomenon and take it into consideration when they provide insulation services.

Insulation is a material installed to minimize the rate of heat transfer in a building. The process of insulation keeps the inside of the building warm and maintains a comfortable environment for occupants of the home and work environments. During the cold weather, insulation keeps the heat inside the building while keeping the cold air out. In summer, if the building has an air conditioner, insulation keeps the cool air inside while the warm air is kept outside. There are different ways to insulate walls according to the seasonal changes in a particular area and energy efficiency.

Most insulation is assigned an R-value. Insulation materials are rated by R-value, which is their ability to resist heat and air sealing contractors consider this when they choose the material they want to work with. A higher R-value indicates more resistance to heat. This R-value value indicates the thermal resistance of the insulation material. Higher R-value indicates that the insulating material will be more effective in terms of retaining heat.

Types of Insulation

1.    Loose-Fill Insulation:

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This is a process in which fiber pellets and loose fibers are blown into attics or cavities using special equipment. This type of insulation is more costly, but it also offers better efficiency in insulating things. There are also two types of Loose-Fill Insulation;

  • Cellulose fiber – This is made from recycled news paper
  • Fiber Glass or Rock wool combination- This insulation is made by blowing it into open stud cavities and provides full coverage.

2.   Blanket Insulation:

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This type of insulation is made of mineral fibers; both rock wool or fiberglass, and is available in blanketed rolls of various widths. This insulated is often installed between wood frames and rafters and provide insulation above the ceilings, within the walls and below the floors in homes. Even though it is the least expensive, blanket insulation requires a tremendous amount of care during installation to ensure its effectiveness.

3.    Rigid board insulation:

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This is typically made of fiberglass, polyurethane, or polystyrene. This type of insulation is high-quality and is available in varying thicknesses and is mostly used for reproofing basement walls and flat roofs.

4.    Spray foam insulation:

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This is composed of a two part liquid that contains a foaming agent and a polymer agent. This type of insulation is a polyurethane foam that is sprayed in between new walls at the time of construction. Once sprayed, it expands as it dries, and fills even the tiniest crevices and cracks. To use spray foam insulation, professionals such as air sealing contractors and insulation contractors should be consulted.

These are the commonly used insulation in commercial and residential buildings. Insulation works well to make things airtight and can help you save money on your energy bill. Ceilings, floors and walls that are well-insulated will hold the heat in during the winter and cause lower energy bills. A well insulated home blocks heat from getting inside in the summer and retains heat in during the winter months.

This keeps the home cooler in the summer and warmer in the winter months, and lowers energy bills. It is that simple and it really is effective. The cost of providing insulation in your home can be paid for through energy savings in one year or less. With the soaring cost of electricity and natural gas, savings may come even sooner.

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