How much does blown in insulation cost
Matthew Perez
Updated on April 19, 2026
Unless your home is relatively new, you will almost certainly benefit from installing blown insulation in your attic. It will make your home a more comfortable place to be in summer and winter, decrease the cost of your energy bills, and increase the value of your home.
Is blown-in insulation worth it?
Unless your home is relatively new, you will almost certainly benefit from installing blown insulation in your attic. It will make your home a more comfortable place to be in summer and winter, decrease the cost of your energy bills, and increase the value of your home.
Which is cheaper blown-in insulation or rolled?
The Differences Between Blown-in and Rolled Insulation The lower the R-value is, the less effective it will be as insulation – although it will be cheaper as well. … In such situations, blown-in insulation is much more effective since it allows you to easily insulate those hard to reach areas.
How much should I pay for blown-in insulation?
Blown-in insulation cost ranges from $930 to $2,085, with most homeowners paying a national average of $1,507. Like other types of insulation, such as fiberglass batts and spray foam, blown-in insulation reduces thermal transfer from outside to inside.How much does it cost to insulate a 1000 sq ft attic?
Square FeetPrice1,000$1,000 – $7,0001,500$1,500 – $10,500
Can you put blown insulation over rolls?
Can you put blown insulation over rolls? Adding blown-in insulation over existing rolls is not a problem. It’s important to air seal the area before adding new blown-in insulation, so it works well to keep your home energy-efficient.
Which insulation is best for attic?
Fiberglass is one of the best attic insulation materials, and it’s available in various forms. We’ve already discussed the batts and roll forms, both of which involve flat, pre-cut sections. But fiberglass is also available in loose-fill or blown-in form.
How much does it cost to insulate a 1200 sq ft house?
The cost to insulate a 1,200 sq. ft. home averages $1,980 to $16,500. These costs are for the full range of options when insulating a home of this size.How much does it cost to insulate a 1500 sq ft attic?
How much does it cost to insulate a 1,500 sq ft attic? With average costs ranging from around $1 per sq ft to $5 per sq ft (excluding structural insulation panels as these are best for new installations) expect to pay from $1,500 to $7,500 to insulate a 1,500 sq ft attic.
How do I estimate the cost of insulation?The average cost per square foot is between $0.30 to $1.50. So, for a 500-square-foot area, your estimate will vary between $150 to $700 if you do it yourself. For a professional job, add $200 to $500 for labor, and you’re looking at around $350 to $1,000 for 6 hours of work.
Article first time published onCan you put batt insulation over blown-in insulation?
A: There’s no problem with installing fiberglass batts over your existing blown-in insulation. … The reason for this precaution is that the facing on the insulation batts is a vapor barrier, which is intended to prevent moisture vapor from penetrating into the insulation.
How many inches should attic insulation be?
R-Value is a measure of insulation’s ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.
Can you have too much insulation in an attic?
It’s possible to over-insulate an attic as too much will cause moisture buildup and eventually result in mold. Eventually, adding more insulation leads to diminishing returns in trapping heat as well.
Is batt or blown insulation better?
In short, there is less chance of error with blown insulation as compared to batts. … Finally, while blown insulation is much more consistent and has a much lower chance of failure, the R-value of this insulation will typically have a higher R-value due to installation quality differences.
How do I walk in my attic with blown insulation?
There is no trick… just sucky, itchy, work. First, if there is enough space in your attic, you can try to push it aside using a broom, snow shovel, or something. A side sweeping broom might work best. You don’t have to broom it all out the way, just down to the tops of the ceiling rafters in the path you want to work.
How much does it cost to have your attic insulated?
The average cost to insulate an attic is between $1 and $7 per square foot. This equates to a typical price range of up to $1,500 per project including labor and materials. For attics with smaller square footage, costs can be as low as $500 while insulation for larger attics can cost up to $4,000.
Should you take out old blown-in insulation?
Your insulation needs to be removed along with the droppings, as it’ll carry some of its toxicity if left in your attic. Removing old insulation and replacing it with new ones will not only rid your home from any rodent infestation and mold, but also improve its energy efficiency and overall air quality.
Will insulating my attic make my house cooler?
The first way insulating material cools a home is by not letting it get too hot in the first place. … However, insulating the attic also prevents cool air from escaping because it reduces the movement of air, also called convection. Overall, the average home can save 10 percent on cooling by insulating the attic.
How much does it cost to insulate a 2500 square foot house?
The average cost of insulating a 2,500 sq. ft. home is between $2,000 and $6,000.
How much does it cost to insulate a 2000 sq ft home?
The average cost to insulate a 2,000 square foot home nationally is $2,700-$3,300 for the total project, including labor, materials, and installation. For a Do-It-Yourself project, the average cost is $700-$1300 for the total project.
How much does it cost to drywall and insulate a room?
Drywall Costs Drywall installation costs $1,846, with a typical range of $997 and $2,886. This translates into a price of $1.50 to $3 per square foot for materials and labor. Most homeowners pay $2 per square foot, depending on the number of rooms and the level of finish.
How much does it cost to drywall a 2000 square foot house?
Average Cost to Drywall a House by House SizeCost to Drywall a 1000 sq ft HouseTotal CostAverage x 6325$12,100High x 7250$17,325Cost to Drywall a 2000 sq ft House
Which is better blown fiberglass or cellulose?
At 3.5 per inch of material, the R-value of blown-in cellulose is 23% better per inch than fiberglass batts! According to research done at the Oak Ridge National Lab, fiberglass loses up to 50% of its R-value in very cold conditions; making cellulose a better choice for homes in northern climates.
Does stacking insulation increase R-value?
When you stack new insulation on top of existing attic insulation, the existing insulation is compressed a small amount. This will slightly decrease the R-value of the existing insulation. This effect is most important if the new insulation is more dense than the old insulation.
Is R30 insulation good for attic?
R30 insulation is the minimum insulation recommended for an Attic from climate zone 1 to 3, while it can be used in cathedral ceilings in all climate zones across the USA. It can be used as maximum insulation in climate zones 4 – 8 of the USA for floors.
How many inches of insulation is R38?
R-ValueThicknessBags / 1000 Sq FtR4916.25”22.6R4414.75”20.1R3812.75”16.8R3010.25”13.0
What should the temperature be in my attic?
The ideal temperature in your attic should be no less than 60 degrees Fahrenheit in the winter and no more than 10-20 degrees hotter than the outside temperature in summer, with a maximum of about 130 degrees Fahrenheit.
Is R60 attic insulation worth it?
Recommended R-Value Varies by State You need exactly as much as the area you live in determines. Here, where temps get pretty hot for much of the year, attics should have from R30 to R60 (average is R38). Those living up north want anything from R49 to R60. This helps insulate against the extreme cold weather.
How long does blown-in insulation last in walls?
Because conditions in the average home are rarely ideal for keeping insulation pristine, insulation often fails before reaching its maximum lifespan. For batt and blown-in insulation, warranties range from 10 to 70 years, but on average, most should last at least 25 years, barring any serious issues such as flooding.
How thick should blown insulation be?
When blown into attics and wall spaces, loose-fill fiberglass offers an average R-2.5 thermal value per inch (the higher the number, the greater the insulating effect). You’d need a thickness of about 7.5 inches of insulation to match the insulating value of a batt of R-19 insulation (R-19 is a common batt value).