Blown-in (or loose-fill) insulation costs between $1.00 and $3.00 per square foot fully installed, averaging about $1,500 to $3,500 depending on the size of your space and the desired R-value. For a standard 1,500-square-foot attic, expect to pay roughly $2,300.
Yes, blown-in insulation is highly worth the investment. It is one of the most cost-effective ways to improve home energy efficiency, reduce drafts, lower utility bills, and increase year-round comfort.
Blown-in insulation at Home Depot costs between $𝟑𝟓 to $𝟓𝟓 per bag, covering roughly 30 to 50 square feet depending on the required thickness. DIY projects cost about $𝟎.𝟓𝟎 to $𝟎.𝟕𝟓 per sq. ft. in materials. Professional installation—including labor and prep—averages $𝟏.𝟓𝟎 to $𝟒.𝟓𝟎 per sq. ft. overall.
Insulating a 2,000 square-foot space typically costs between $2,000 and $10,000 fully installed, or $0.40 to $5.00+ per square foot depending on the material and labor. The final price heavily depends on whether you are doing a DIY rolled insulation project or hiring professionals for spray foam or blown-in cellulose.
Blown-In Insulation: Costs about $1.00 to $2.80 per square foot, making it slightly more expensive than rolled insulation. However, blown-in insulation is better suited for filling irregular or hard-to-reach spaces, such as existing walls or tight attic corners.
What time of year is Insulation cheapest?
For most attics, blown-in insulation should be installed to a depth of 10 to 20 inches, depending on your climate and the insulation material you use. This achieves the standard recommended thermal resistance (R-values) of R-30 to R-60.
What can Lowe's install? We can install blown-in and batt insulation. We can also help with your attic and crawlspace insulation projects. Our PROviders will help pick the best product for the job.
Effective wall coverings for cold walls include thermal insulation wallpaper (PE foam or cork), insulated lining paper, rigid foam boards, and thick acoustic panels to reduce heat loss and improve warmth. Popular solutions include Adhesive Thermal Insulation Wallpaper (3.28 x 32.8 ft) and 19. 7 in. X 16. 4 ft. Thermal Insulation Wallpaper, which offer easy installation for immediate improvement.
Choosing the best time to insulate your home largely depends on your circumstances and needs. However, it's generally recommended to install insulation during the spring or early summer months. This timing allows you to prepare your home for the extreme temperature swings of summer and winter.
Yes, insulation is tax-deductible in the form of a federal tax credit, specifically the Energy Efficient Home Improvement Credit (Section 25C). You can claim 30% of the cost of insulation and air sealing materials, up to a maximum annual credit of $𝟏,𝟐𝟎𝟎.
Superior Thermal Performance: Cellulose insulation has a higher R-value per inch than fiberglass, providing better thermal resistance. Sound Insulation: Cellulose also provides excellent sound insulation due to its density, making your home quieter.
Mice are curious and always searching for safe, snug, and warm nesting sites. Attics filled with blown-in insulation provide an excellent option–from the mice's point of view. As long as there is a ready food source. Mice are omnivorous and will eat and chew on almost anything including wood and electrical wires.
Blown-in insulation is popular for filling irregular spaces, but it presents notable drawbacks like settling over time, poor moisture resistance, and messy maintenance. Proper attic ventilation is also required to prevent the material from shifting or clogging airways.
Closed cell spray foam is rigid once set. It is a better thermal insulator and was previously sold to stabilise failing roofs. But if it has been used inappropriately or installed poorly, it might put stress on timbers, restrict air circulation and put them at risk of decaying.
Because spray foam can trap moisture, hide the condition of the roof, make it difficult for surveyors to inspect, which means risks like timber decay, dry rot, and not forgetting increased fire risk. If you've got it or you're buying a property that does, this is something you need to know upfront.
Attic insulation costs at Home Depot range from $𝟏.𝟓𝟎 to $𝟐.𝟒𝟓 per square foot fully installed, or $𝟎.𝟑𝟎 to $𝟏.𝟓𝟎 per square foot for materials if you are tackling the project as a DIYer. Total prices vary depending on the type of insulation, your target R-value, and the size of your space.
1. Superior Energy Efficiency. Blown-in insulation effectively reduces heat loss in winter and heat gain in summer, leading to lower heating and cooling costs year-round. By minimizing air leaks, it prevents conditioned air from escaping, keeping your home at a consistent, comfortable temperature.
While having a deep layer of blown-in insulation is excellent for your energy bills, you can put too much in if it blocks your attic's ventilation. Piling too much insulation over your eaves and soffit vents restricts the airflow needed to control moisture, which can eventually lead to wood rot, mold, and roof damage.
When balancing upfront cost and overall thermal efficiency, the cheapest and most effective standard insulation is fiberglass batt insulation. However, if you are looking for long-term savings through superior air sealing, dense-pack cellulose often provides the best overall value.
Foam insulation is a common target because it's easy for them to chew through. The material offers little resistance, allowing mice to create tunnels or nests within the insulation. But mice aren't just interested in chewing for the sake of it—they're also drawn to the warmth and shelter insulation provides.
Home insulation doesn't have an “expiration date,” and the material doesn't “go bad” after a certain number of years have passed. Ultimately, the condition of the insulation and its performance are more important factors than age when deciding whether to upgrade or replace insulation.