When it comes to attic insulation installation, there are several materials that can be used to insulate the space. The most common type of insulation is fiberglass block insulation, which is typically installed at the level of the floor joists. Additionally, foam plates (rigid insulation panels) can be employed to insulate any part of the house, from the roof to the foundation. Loose-fill insulation can also be installed in enclosed cavities or unenclosed spaces, such as attics.
For air ducts, insulation is usually installed by HVAC contractors and is secured with quick clips or washers. Lastly, radiant barriers and reflective insulation work by reflecting radiant heat. Having a qualified contractor install air sealing and insulation can help you save energy and money in the long run. The amount of insulation or R-value depends on the climate, the type of heating and cooling system, and the part of the house you plan to insulate.
In addition, some building codes do not recognize sprayed foam insulation as a vapor barrier, so an additional vapor retarder may be required. Blanket-type insulation, which is the most common and widely available type of insulation, comes in blocks or rolls. Insulating material is measured in terms of its thermal resistance or R value: the higher the R value, the greater the insulation efficiency. To isolate and reduce air leaks, insulation that is placed in situ can blow on walls, attic surfaces, or under floors. Some installations can produce a higher R-value than traditional block insulation with the same thickness and can fill even the smallest cavities, creating an effective air barrier. See Insulating Materials for more information on products that are commonly used to insulate concrete blocks.
Unlike more common insulation systems, which resist heat flow through conduction and convection, radiant barriers and reflective insulation work by reflecting radiant heat.
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