Department Of Energy Attic Insulation

If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space.

Department of energy attic insulation.

Enclosed existing wall or open new wall cavities. Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity. R value is a measure of insulation s ability to resist heat traveling through it. Loose fill insulation must be applied using an insulation blowing machine in either open blow applications such as attic spaces or closed cavity applications such as those found inside existing walls or covered attic floors.

Before you insulate you should make sure that your home is properly air sealed. Most manufacturers use 40 to 60 recycled glass content. Insulation is literally built into the home s walls creating high thermal resistance. Types of insulation insulation comes in many different.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Insulation level are specified by r value. Mineral rock or slag wool. 1a attic access door.

An energy assessment also known as a home energy audit will also help identify areas of your home that are in need of air sealing. Learn more about where to insulate. Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. The higher the r value the better the thermal performance of the insulation.

Blown into place using special equipment sometimes poured in. Benefits of insulation on average you can save up to 20 on your home s heating and cooling costs or up to 10 on its total energy costs by adding insulation to attics floors crawl spaces and accessible basement rim joists and by reducing unwanted air leaks all around your house.