Types of Attic Insulation

Insulation may not be glamorous, but it’s one of the most effective and affordable home energy-efficiency upgrades you can make. It reduces the transfer of hot air to cold air in your home, making your AC more efficient during summer and your furnace less expensive during winter. It also minimizes temperature fluctuations, so you’ll feel more comfortable year-round.

There are 4 types of insulation:

Fiberglass insulation, which comes wet and expands as it dries to fill all the cracks and crevices in your attic, has the highest R-value per inch compared to traditional batts or rolls. It’s more expensive than other types of insulation and requires professional installation, but the higher upfront cost could be offset by lower energy bills.

Fiberglass batt insulation is made from recycled glass spun into fibrous material. It is eco-friendly, non-flammable, and safe to touch. It is a cost-effective option and works well in attics with irregular joist spacing, lots of obstacles or limited headroom for maneuvering. It does not mix well with moisture, however, and can be harmed by water vapor.

Loose-fill insulation, which is also referred to as blown-in cellulose, mineral wool, or fiberglass, uses materials such as shredded newsprint and cardboard, reclaimed wood, and even industrial waste for its construction. It is a more flexible option that can be blown into difficult to reach spaces. It is rated with different R-values depending on the material, and will lose some of its effectiveness over time due to settling.

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