Installing Attic Insulation

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Installing attic insulation is the number one way to improve your heating and cooling bills and help make your home more energy efficient. When properly installed, attic insulation can decrease your energy bill by about twenty percent or more each month.

Before replacing or adding insulation to your attic, determine if you have moisture problems. Adding insulation can make problems with moisture worse by trapping it and causing mildew, mold, stains, and rot. Before putting in any insulation, deal with the moisture problems.

Warning: if you think you have vermiculite insulation in your attic, it might contain asbestos. Don’t disturb it. You must contact an insulation contractor certified to handle and remove asbestos.

Asbestos can be a real risk to your health and may lead to mesothelioma or asbestos poisoning. If you have suffered from either of these then you can get legal help from Mesothelioma Matters


The R-value is insulation’s ability to resist heat flow. The higher the insulation’s R-value, the more effectively it will insulate. Insulation materials can vary in thickness. Some insulation averages R-3 while others are as high as R-8 per inch. Also remember that over time, any insulation will lose some of its ability to insulate.

Sheets or Loose Fill?

Insulation sheets and bats are usually easy to install, but if you have an open attic space, some insulation sheets some may not be easy to install if the joists are not spaced evenly.

Loose fill insulation is perfect for filling irregular shaped spaces. It can also provide more complete coverage than bats. When installing loose fill insulation, it can be blown from a machine or hand poured. You can rent machines that will blow the insulation at rental stores, but make sure you use caution. The machines settings must be carefully set so that you do not use too much. If the insulation is too thick, it can cause settling and may not properly insulate the attic.

Type of Insulation

Two commonly used types of insulation can be good options for attic spaces. Cellulose insulation is made from ground wood or paper, and usually has additives to prevent mold and make it resist to fire. Fiberglass insulation is made of molten glass strands and is fire resistant.

Learn more about insulation and installing attic insulation.

Wear Protective Gear

When installing attic insulation, use caution and wear protective gear. Always protect your hands and eyes when applying insulation. Manytypes of insulation can irritate your eyes, nose, and throat.

Updated: January 25, 2016 — 6:46 am

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