The proper attic insulation is the best way to retain fresh air during summer and prevent heat loss during winter. It can cost up to $1700 to $2100 to insulate on the attic. It all depends on what insulation materials you use. It all starts with the R-value. The higher the R-value, the more effective the insulation is.
Options For Attic Insulation
- Loose-fill insulation
It can be blown effectively over existing insulation. It is available in cellulose, mineral wool and fiberglass. Loose-fill insulation is the best for insulating attics with :
- Multiple obstructions
- Very little headroom.
- Batt insulation
It can also be called blanket insulation. The easiest way to install insulation in your home is to use fiberglass batts. Fiberglass batts are more comfortable to pick at the store and are easy to roll out. It is ideal for attics with standard-based beams. Batts must be trimmed carefully to fill well around vents. By doing this, it will be able to retain the R-value effectiveness. The material and thickness determine the price. The expected R-value is 3.1 – 3.8 per inch.
- Sprayed foam insulation
This is the most expensive form of insulation. It has one of the highest R-value at 3.5 per inch for the open-cell insulation and 6.5 for the closed-cell insulation.
Both open-cell and closed-cell are made with polyurethane. The only difference is that the closed-cell is filled with gas that helps the foam expand to fill the spaces around it. Open-cell insulation is filled with air. For this reason, it gives the insulation a spongy texture. Both closed-cells and open-cell provide an effective air barrier. Don’t forget that closed-cell can also be used as a preventive measure for moisture-vapor if that is needed. Sprayed foam insulation is the most effective type of insulation.
- Cellulose
This is made from recycled, ground-up paper. The cellulose insulation method is dusty, but it will finally get the job done. Cellulose has an R-value ranges approximately from 2.2 to 3.8 per inch. It has the ability to control air movements. Cellulose is dense enough to prevent the moist air movement. It also helps in controlling frost in attics. Cellulose insulation can get moldy if exposed to moisture.
Inspecting your attic insulation will help you determine the needs for your insulation. It is always a good idea to choose insulation with the highest R-value. It all starts with the R-value.
Learn how thick should attic insulation be
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