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How Much Does It Cost To Install Batt Insulation?

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National Insulation Costs

$0.33 Minimum Cost
$0.48 Maximum Cost

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How Much Does It Cost To Install Batt Insulation?

When it comes to keeping homes warm in the winter and cool in the summer, insulation plays an essential role. Installing this handy material helps reduce heat entering a home from outdoors in warm weather and traps warmth inside during cold weather. Fiberglass batts are one of the most popular and cost-effective insulation choices for many homeowners, especially for new construction or in attics and crawlspaces. Batts are precut sections of fiberglass sized to fit between framings like studs and joists, and they come with or without paper or aluminum facing.

This cost guide outlining batt insulation costs, advantages and R-values is intended to help you determine if it is the right product for your home and to know what to expect when hiring a contractor to install batt insulation in your home. Once you are ready to install batt insulation, connect with insulation contractors in your area through ImproveNet.

Table of Contents

  1. Batt Insulation Cost Per Square Foot
  2. Batt Insulation Price Comparison
  3. Batt Insulation Advantages
  4. Batt Insulation R-Values
  5. Where To Install Batt Insulation
  6. Find An Insulation Contractor

Batt Insulation Cost Per Square Foot

Before installing batt insulation, it helps to have some understanding of the potential cost. The table below shows the average costs, from low to high, for mid-grade batt insulation, labor and related supplies. The cost estimates are for typical insulation work completed by qualified trade professionals.



Low Average Price

High Average Price

Batt insulation





5.5 hours



Related Supplies: typically includes fasteners, sealing tape and vent flow baffles








Average cost per square foot



Bear in mind that insulation costs includes waste overage and local delivery to the site. Labor costs include job planning, acquiring equipment and materials, preparation of the area, fitting and securing insulation and cleanup. The cost for related supplies includes expenses for fasteners, sealing tape and vent flow baffles.

A number of factors may increase costs for installing insulation. These include:

  • Removal, relocation, repair or modification of existing framing or HVAC, electrical and plumbing systems
  • Costs for bringing any of the systems listed above to code
  • Costs for hazardous materials testing and remediation
  • Supervision by a general contractor (adds 15% - 25% extra to the total cost)
  • Local sales tax on project materials and supplies
  • Building permit or inspection fees

Batt Insulation Price Comparison

Batt Insulation Price Comparison

Alternative types of insulation include spray foam insulation, blown-in insulation and reflective or radiant barrier insulation. The table below shows the comparison in cost for various insulation types.

Type of Insulation

Average Price

Batt insulation

$0.67/sf to $1.32/sf

Open-cell spray foam insulation

$0.45 to $0.65 per board ft. (sf x depth in inches)

Closed-cell spray foam insulation

$1 to $2 per board ft. (sf x depth in inches)

Blown-in insulation

$1/sf to $1.33/sf

Reflective or radiant barrier insulation

$1.35/sf to $2.15/sf

Batt Insulation Advantages

Batt insulation offers a bevy of advantages. Because it installs fairly quickly, batt insulation is one of the least expensive types available. Fiberglass batts do not have a tendency to shrink or settle, so they maintain their effectiveness over time. The material is flexible, precut and sized, so it fits snugly in all kinds of spaces and offers good energy efficiency. In fact, studies show that batt insulation can lower the amount of energy needed to heat or cool a home by up to 50%. Essentially, homeowners receive a double bonus with batt insulation: more comfortable indoor temperatures and lower energy bills. Additional advantages of fiberglass batt insulation include:

  • Resistance to fire and insects
  • Eco-friendly options made from recycled glass
  • Availability of medium-density and high-density products
  • Reduction in the transmission of sound through walls, ceilings and floors

Batt Insulation Advantages

Batt Insulation R-Values

Homeowners have a variety of options when it comes to price point, insulation thickness and R-value. The R-value of insulation refers to its capacity to resist heat flow. Higher R-values indicate more resistance to heat.

Standard batt insulation offers an R-value/inch between 2.9 and 3.8 per inch of thickness, and premium batt insulation comes with an R-value/inch between 3.7 and 4.3 per inch. To get the final R-value, simply multiply the base value by the number of inches in thickness of the desired insulation. For instance, a 14-inch batt thickness with an R-value/inch of 4 has an R-value of 56 (R56).

The following table outlines the recommended R-value and thickness of batt insulation for homes in various climates.

Fiberglass Batt Thickness


Warm climates

11 – 14 inches

R-30 to R-49

Moderate climates

13 – 17 inches

R-38 to R-60

Cold climates

14 – 19 inches

R-49 to R-60

Homeowners can boost their R-values further by installing insulated vinyl siding on the exterior of the home.

Find An Insulation Contractor

Where To Install Batt Insulation

From the crawl space to the attic, insulating an entire home provides the best energy efficiency and comfort. Common areas for batt insulation include basements, crawl spaces, interior and exterior walls, ceilings and attics. Batt insulation is not a good option for areas that are susceptible to moisture.

Installed in garage walls and along a garage door, insulation helps regulate temperature and sound for people who use their garage for more than parking their car. Costs for insulating different areas of the home depend on the R-value desired and the size of the space, but batt insulation costs typically range from $0.67/sf to $1.32/sf.

Find An Insulation Contractor

Knowledge of various R-values and what is needed for a particular geographic location makes insulation a job many people leave to professionals. Skilled pros guarantee that insulation is properly installed around electrical and plumbing systems and that adequate ventilation is provided in attics and crawl spaces.

If you are ready to make your home more comfortable, let ImproveNet help you find local insulation contractors to complete the job. For the finest work possible at the best price, get estimates from at least three companies, check reviews and ask for a signed contract outlining the scope and time of completion for the job.

Get free estimates from local insulation contractors

Last updated on Nov 8, 2018

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