How much should I expect to pay for blown-in insulation?

Author: Francisca Hilpert  |  Last update: Tuesday, May 12, 2026

Wondering how much does blown-in insulation cost for your home? On average, the cost of blown-in insulation ranges from $1.50 to $2.80 per square foot, leading to an average cost of blown-in insulation between $1,500 and $2,800 for a 1,000-square-foot area.

Is blown-in insulation worth the money?

If you're looking for a solution to enhance your home's comfort and energy efficiency, blown-in insulation offers a reliable and cost-effective option. It seals gaps that other insulation types miss, helping to lower energy consumption and create a more stable indoor environment.

How much does it cost to insulate a 2000 sq ft house?

The cost to insulate a 2000-square-foot house can range from $2,000 to $6,000, depending on the type of insulation used and other factors.

How much should blown-in insulation cost?

Fiberglass Insulation

The price for blown-in insulation using fiberglass averages between $0.50 to $2.00 per square foot, making it a cost-effective option for many homeowners. In warmer climates like Florida, fiberglass performs well in attic spaces, helping to reduce heat transfer and lower energy bills.

Is it cheaper to insulate myself?

By doing it yourself, you can avoid labor costs associated with hiring a professional, potentially saving hundreds or even thousands of dollars. Sense of Accomplishment: Taking on a home improvement project like insulation can give you a sense of accomplishment and pride in improving your home's energy efficiency.

How to Install Blown-in or Loose Fill Insulation

How do I estimate the cost of insulation?

Roof insulation costs $0.50 to $1.50 per square foot or between $1,500 to $4,500 for the entire project. Wall insulation costs $1 to $4 per square foot on average, depending on the area of your home's walls.

What time of year is insulation cheapest?

Best Time of Year to Buy Insulation

In this case, the spring is the best time, because you will also start to see savings in the summer months. The same is true for warmer climates, just different times of year because you'll want the job finished before the heat sets in.

What type of blown-in insulation is best?

Fiberglass is by far one of the most thoroughly tested building materials and can be installed in the form of batt or blown-in insulation. Fiberglass is eco friendly, non-flammable, safe to install and maintains its thermal performance for the life of the building.

Can you put too much blown insulation?

It is possible to over-insulate your house so much that it can't breathe. The whole point of home insulation is to tightly seal your home's interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers. That's when mold starts to grow.

Should I remove old attic insulation before adding new?

Do I Have To Remove Old Insulation? Unless your insulation is wet, moldy or infested with pests, you don't need to remove it before adding insulation on top of it. ENERGY STAR® recommends that you inspect your insulation for signs of mold, mildew, moisture and pest infiltration before making this determination.

Where to rent an insulation blower?

Look for insulation blower rental equipment in The Home Depot Tool Rental Center to help keep your home cool in the summer and warm in the winter. Heating and cooling costs are the biggest portion of utility bills for the average homeowner.

What is the labor cost to install insulation?

The average cost to insulate a house is $1,600 to $8,000. Insulation material prices are $0.50 to $2.80 per square foot, plus $0.50 to $1.70 per square foot for installation labor. Insulation replacement costs $2 to $8 per square foot, including old insulation removal.

What is the downside of insulation?

Irritation to skin and respiratory system

Wall insulation solutions like Rockwool are made of ultra-fine fibres. While thermally efficient, they can cause skin and respiratory irritation.

What is the least expensive way to insulate a house?

It's essential to wear protective clothing and a mask when installing fibreglass insulation to prevent any health risks. Overall, fibreglass insulation is the cheapest and most effective insulation option available, making it a popular choice for homeowners and builders alike.

Do you need a contractor to install insulation?

The type of material you want to use—Batts or rolls are typically installed by homeowners while other types of insulation generally require professional installers (though blown insulation equipment can be available for rental)

How much does 1500 sq ft of insulation cost?

Average Cost of Fiberglass Insulation

The cost of fiberglass insulation can range from $0.40 to $1.50 per square foot, depending on the type and R-value chosen. When calculating the cost for an average home of around 1,500 square feet, homeowners can expect to pay between $600 and $2,250 for materials alone.

Can I install insulation myself?

DIY Home Insulation Pros

Fiberglass batts and rolls are fairly inexpensive and can be installed in open and accessible areas like attics, crawl spaces, and rim joists by the handyman homeowner. The homeowner can install blown-in cellulose insulation, but a machine must be rented for the installation.

Can I do my own blown-in insulation?

You can do it yourself for about $500. Blowing attic insulation isn't hard, but it's dusty, sweaty work. To make insulating an attic easier, grab a helper and set aside two days: one for attic prep and the second to actually blow the insulation. By the end of the weekend you're going to be sore and tired.

Does Lowe's install insulation?

If you're considering crawlspace insulation or attic insulation installation, you don't need to worry about finding insulation companies or insulation contractors to do the job. Lowe's is here to help with our blown-in and batt insulation installation service.

How much blown-in insulation do I need for 1000 sq ft?

For example, if the square footage of the room you're planning on insulating is 1,000 square feet and you want to achieve an R-value of 60, you will need approximately 17 bags to fully insulate your room. If you are using loose fill insulation, the coverage varies based on the R value that is needed.

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