How Much Does It Cost To Insulate A 2,300 Sq Ft House?

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You are embarking on a new home project and are trying to get estimates for the costs to complete the project. The cost to insulate a home can depend on many factors, including the dimensions of the home itself. The type of insulation you use can also influence the cost and whether or not you do the installation yourself. This post will be a detailed breakdown of the cost range you can expect when insulating a 2,300 square foot house. Keep reading to learn more.

The average cost to insulate a 2,300 square foot house is between $3,000 and $5,000, including labor and materials. The cost of labor accounts for about one-third of the cost. You can expect to pay between $1,300 and $3,300 for a do-it-yourself project on average. These costs vary based on the type of insulation, the R-value, and the thickness of the material.  

Now that you know some average costs of insulating a 2,300 square foot house, you probably want to know how to save the most money while finishing the project. You may also want to know when insulation needs to be replaced or how to know if your insulation has gone bad. This post will answer all of these questions and also tell you whether it is possible to over-insulate a house.

Thermal insulation located on the attic of the house reinforced with metal studs, How Much Does It Cost To Insulate A 2,300 Sq Ft House?

How Much Does It Cost To Insulate A 2,300 Sq Ft House?

The cost to insulate a 2,300 square foot house depends on the height of the ceilings. 2,300 square feet only refers to the floor space. If your house has higher ceilings, that will be more wall space to insulate. Likewise, you will have a lower cost if your ceiling height is shorter than average. The type of insulation you use will also cause a variation in your final cost.

A worker installing thermal insulation on the roof attic

The average cost to insulate a 2,300 square foot house is between $3,000 and $5,000 if you hire a professional to install. If you do the project yourself, you can expect a cost between $1,300 and $3,300. This varies based on the cost of materials in your location, ceiling height, and type of insulation.

What Are The Different Types Of Insulation?

Here are the most common types of insulation that are used for residential and commercial building projects. The Department Of Energy has a post about the types of insulation you can use in your home.

  • Fiberglass or mineral wool batts insulation
  • Blown-in insulation, including fiberglass or cellulose
  • Open-cell spray foam
  • Closed-cell spray foam
  • Rigid foam insulation

What Is The Cheapest Way To Insulate A House?

The cheapest way to insulate a house is to do it yourself. The cheapest materials that you can use for this project would be fiberglass batts or blown-in fiberglass insulation. Open-cell and closed-cell spray foam insulation have higher installation costs, but you could save money if you are able to do it yourself.

What Is The Cost Of Fiberglass And Mineral Wool Batts?

Fiberglass batts cost between $0.75 and $1.20 per square foot. For a 2,300 square foot house, the total amount for materials is $1,725 to $2,300. The labor cost to install batts is between $0.50 to $1.25 per square foot. The labor cost will be between $1,150 and $2,875. This would bring the final cost to $2,875 to $5,175 or between $1.25 and $2.45 per square foot as the total cost for the project.

Mineral wool batts cost about one-third more than fiberglass batts. It provides stronger sound insulation, a higher R-value per inch, and fewer volatile organic compounds (VOC). You can expect to pay about $2,300 to $3,000 for materials for a total of between $3,500 and $5,875 for the total project.

What Is The Cost Of Open-Spray Foam And Installation?

A workman applying fiberglass insulation on the wall framing

Open-cell foam is cheaper for materials but requires expertise to install. You can expect to pay between $0.45 and $0.65 for materials but $1.90 to $4.90 for installation. This brings the total cost per square foot somewhere between $2.35 and $5.55.

When insulating a 2,300 square foot house, the total cost runs between $5,405 and $12,765. If you are able to install it yourself, the cost would only be $1,035 to $1,495.

What Is The Cost Of Closed-Spray Foam And Installation?

Closed-spray foam has as much as two times the insulating power of open-cell spray insulation, but the material is more costly. You can expect to pay between $1 and $1.50 per square foot of open-cell insulation.

The installation cost can be between $1.90 and $4.90, for a total cost between $2.90 and $6.40 per square foot. When using closed spray foam for a 2,300 square foot home, the total cost with installation would be between $6,670 and $14,720.

What Is The Cost Of Blown-In Insulation?

Blown-in insulation can cost less than batts for materials, but professional installation is recommended. You can expect a total cost of $1.10 to $2.50 per square foot. This brings the total insulation cost for a 2,300 square foot home to $2,530 and $5,759, including installation. This is the cheapest option for insulation installation if you are paying contractors to complete the job.

What Is The Cost Of Rigid Foam Insulation?

Rigid foam insulation costs between $1.10 and $1.45 per square foot for materials. It costs between $0.90 and $1.30 per square foot for labor and installation cost. This combines for a total between $4,600 and $6,325 for a 2,300 square foot house. Rigid foam insulation has the highest R-value per inch compared to other insulation products.

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How Much Does It Cost To Insulate A 1,200 Square Foot House?

A worker installing fiberglass insulation on the wooden framing of the house

The average cost per square foot for an insulation project runs between $1.30 and $2.17 per square foot. When insulating a 1,200 square foot house, you can end up with a final bill between $1,560 and $4,990 to complete the project. You can subtract about one-third for the labor cost if you can complete the installation yourself.

For more information about the cost to insulate a house, check out this post. How Much Does It Cost To Insulate A 2000 Sq Ft House?

How Can You Tell If Insulation Is Bad?

There are some clear signs that your house is under-insulated or that your insulation has gone bad. One sign is that you are unable to keep your house at a comfortable temperature without it getting too hot or too cold. You may have extra draftiness or areas where the house seems cooler.

You may also find leaks in your home or cold walls. If you have a mouse or rodent infestation, then it is a sign that your insulation is compromised. If your energy bills are very high, then you may have an insulation problem. Either your home is not insulated enough, or the insulation is not working effectively anymore.

When Should You Replace Fiberglass Insulation?

Fiberglass insulation can last up to 100 years without needing to be replaced if there are no leaking or infestation problems. However, it is a common issue for fiberglass insulation to fail after 15-20 years due to leaks or infestation. You can perform a home energy audit every 10-15 years to make sure the insulation is doing the job correctly.

Do I Need To Remove Old Insulation Before Installing New?

You do not need to remove old wall insulation before installing new. The most important factor is that the insulation is not damp or damaged. There should not be any sign of mice or other rodent infestations in the insulation. If you find that there is dampness or an infestation, then the old insulation should be removed before installing new insulation.

Can You Over Insulate A House?

It is possible to over-insulate a house. Packing insulation too tightly into the walls could possibly cause moisture to become trapped, and mold can occur as a result. The insulation and house need to be able to breathe to prevent this from happening. Over-insulating is rarely a problem. It is more likely that your home is not insulated enough to reduce energy costs in your climate.

How To Insulate Windows In A House?

The windows in your home are a place where extra draftiness can occur. This can bring down your efficiency and increase your monthly energy costs. You can add weather stripping, caulk, spray foam, or a sealant. You can use these materials to fill in any gaps that may be present anywhere in your home. The Department Of Energy has tips on sealing up your home.

For more information about sealing and insulating your windows, check out this post. How To Insulate New Construction Windows

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In Closing

Thermal insulation located on the attic of the house reinforced with metal studs, How Much Does It Cost To Insulate A 2,300 Sq Ft House?

The total cost to insulate a 2,300 square foot home is between $2,000 and $5,000, including labor costs. Your cost may increase if you choose to use foam insulation or up to 25 percent more if you choose mineral wool. Fiberglass batts or blown-in insulation offers the cheapest option for insulating your home, and you can save more if you do it yourself.

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