How much does it cost to add blown in insulation?

Asked By: Quiliano Elbracht | Last Updated: 13th February, 2020
Category: home and garden indoor environmental quality
4.3/5 (283 Views . 27 Votes)
On average, the cost of adding blown-in insulation to an existing home ranges from $800 to $2,000. Blown-in insulation (also know as loose fill) is most commonly made of cellulose or fiberglass, although there is also insulation made of mineral (rock or slag) wool.

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Simply so, how much does it cost to insulate a 1200 sq ft attic?

Insulation prevents heat and cooling loss in the home, so with attic insulation, your home will feel warmer in the winter and cooler in the summer. An average-size attic of 1,200 square feet will usually cost about $1,700-$2,000 for blown-in cellulose or fiberglass.

Also, how much does it cost to insulate a 1600 sq ft house? Cost: The average cost per square foot is between $0.64 - $1.19. So, for a 500 square foot area, your estimate will vary between $145 to $200, if you do it yourself. For a professional job, add between $150 to $300 for labor, and you're looking at around $300 to $500 for 6 hours of work.

Keeping this in view, is blown in insulation cheaper than rolls?

By contrast, installing fiberglass batts or rolls, while labor-intensive, is not hard for DIYers. Material cost. The insulation itself costs about the same for comparable R-values. Blow-in cellulose costs about $30 for each 19-pound bag, which will cover about 40 square feet at minimal R-value.

Can you do blown insulation yourself?

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.

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Can you over insulate an attic?

But there may be a theoretical point of “too much.” If a home is over-insulated and is too tightly sealed, moisture can get trapped inside. Without proper ventilation, a home can build up too much moisture, especially in the attic (warm air rises), which can cause mold problems and, overall, lower indoor air quality.

How often should attic insulation be replaced?

Insulation should also be replaced, in some cases sooner than 15 years, if it is no longer doing its job properly. You'll know it needs to be replaced if there are insulation leaks or if it is peeling from the walls.

Is it OK to put flooring over blown in insulation?


If blown-in insulation is used, control the height or thickness of the layers so boards can by laid over top without having to compact the filler.

How much should I pay for attic insulation?

It can cost anywhere from $1,700 to $2,100 or between $1.50 and $3.50 per foot to insulate an attic depending on what insulation material you choose. Blown-in insulation is the least expensive option and ideal for older attics. Spray foam, while the most expensive, is best for noise reduction and new construction.

How much does it cost to insulate a 1000 sq ft attic?

Blown-In Attic Insulation Costs
The cost to insulate an attic with blown-in insulation runs from $600 to $1,200, assuming it is 1,000 square feet in size. If you choose to hire a professional, expect to pay from $40 to $70 an hour for labor in addition to the cost of materials.

Is it worth adding insulation to attic?

However, spray foam insulation is more expensive to install than batt insulation. A good median option between the two — both in cost and R-value — is blown-in cellulose. Installing attic insulation this winter is a worthwhile long-term investment because it can significantly decrease your heating bills.

Can you lay insulation over electrical wires in attic?

If there is not anyinsulation in your attic, fit the insulation between the joists. Don't compress the insulation to fit behind pipes or wires. Instead cut to the middle of the batt's thickness so you have a flap under the wire and one over the wire.

Should old attic insulation be removed?


Remove Old Insulation
Once there is no asbestos, mold, or rodents, it is generally safe to proceed with attic insulation removal yourself. Some insulation is easier to remove than others. Luckily homeowners are more likely to find the easier kind which is blown-in fiberglass or cellulose insulation.

How much money can you save by insulating your attic?

Add attic insulation to lower heating and cooling costs by as much as $600 per year. Save about $600/year by boosting the amount of attic insulation from R-11 to R-49.

What is best type of attic insulation?

From a performance standpoint, the best type of insulation is spray foam. There are two types; closed-cell and open-cell, aka 2-pound and ½-pound, respectively. They have insulation values of approximately R-6.5 and R-3.6 per inch, respectively.

What is the best type of blown in attic insulation?

The best insulation options for an attic are open cell spray foam, fiberglass, and cellulose.
  • Cellulose is the oldest insulation material used for not only the attic, but other areas of the home as well.
  • Fiberglass is another traditional insulation material that consists of extremely fine glass fibers.

What is the best insulation for an attic?

Loose-Fill Insulation
Cellulose is the most effective material and has an R-value of 2.2 to 3.8 per inch, but if exposed to moisture it can get moldy.

Is blown in insulation any good?


Blown-In Insulation is a Good Investment
Adding loose-fill insulation to your attic is one of the fastest paybacks of any home improvement project. The amount of money you save on energy costs will add up quickly over the next couple of years, more than paying for itself, and even bringing a return on your investment.

Which is better blown in insulation or batting?

Blown insulation is accomplished by blowing out chunks of either fiberglass or cellulose from the hose of a blowing machine. The main benefit of blown insulation is that it is a much more consistent type of insulation. In short, there is less chance of error with blown insulation as compared to batts.

Is there asbestos in cellulose insulation?

If this sounds like what you have, it is likely cellulose insulation, which contains a higher amount of recycled paper, without minerals. This means cellulose insulation does not contain asbestos and is a safe insulation, blown into the cavities.