Cost to Insulate an Attic with Fiberglass Batts

Cost to Insulate an Attic with Fiberglass Batts

What's the cost of attic insulation? An insulaltion contractor charges $1,506 to insulate an attic with fiberglass batts vs. doing it yourself for $880. Adjust the cost with your ZIP Code.

National Average Improvement and Repair Cost
Diy Logo Hours Pro 10.1 DIY 11.0
Money Pro $1506 DIY $880
Per Square Foot Cost
Per SF Cost $1.26 Total Cost



By Gene and Katie Hamilton

Energy experts agree that you’ll lower your energy bills if you insulate your attic with at least 12 inches of insulation, which is considered the minimum amount to meet today’s standards. And it’s easy to do: Just lay down batts of poly-wrapped insulation directly over what’s already up there. It’s not exactly fun to do, but it’s one of the best ways you can button up your house to make it tighter and more energy efficient.

A contractor will charge $1,506 to install fiberglass batts in the cavities and space between floor joists in a 1,200-square-foot attic. That includes the labor and material. You can buy the insulation for $880 and do it yourself and pocket a nice saving. Today’s batt insulation is greatly improved and wrapped making it much easier (read: not itchy) to install. It’s compacted, so it’s not as bulky and cumbersome to transport and get up to the attic.

To do the job, use a measuring tape to determine the length of batts needed, and scissors and a straight edge to cut them to size. Wear a respirator, safety goggles, long pants, a long-sleeved shirt and a pair of knee pads to save your shins.

Don't want to get involved doing this job yourself? Click here to get to Home Advisor and find a local qualified contractors in your area.

Watch a video from the Insulation Institute Installing Attic and Ceiling Insulation.

The average price to insulate an attic with fiberglass batts noted above is cost data to compare a contractor’s estimate with doing it yourself. Tweak the data by adding your ZIP Code to find a local cost.

Improvement and Repair Cost Updated 2020

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Poll Results

DIY 66%
PRO 34%

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