Attic Insulation Calculator

Simply enter your information below for a FAST & EASY estimate* of the attic insulation you need.

Before you begin, check out helpful tips for more information.

1 What is the square footage of your attic?
2 Do you have any existing insulation in your attic?

How much existing insulation do you have?

Type (Bottom Layer if any)

Type (Middle Layer)

Type (Top Layer)

-OR-

* By insulating and air sealing. http://www.energystar.gov/index.cfm?c=home_sealing.hm_improvement_methodology. Savings vary. Find out why in the seller’s fact sheet on R-values. Higher R-values mean greater insulating power.

Attic insulation is a key component of reducing your home's heating and cooling costs.* The advanced attic insulation calculator will help you figure out how much Owens Corning™ insulation you'll need to insulate your attic – and about how much you'll save in energy costs.*

Enter the below information for a detailed Attic Insulation estimate* of TYPE & QUANTITY of insulation you need.

Before you begin, check out helpful tips for more information.

1 Measure your attic

For an accurate estimate, we first need to know the square footage of your attic. Select an option below:

2 Tell us more about your home

Number of Stories

Do not include your basement

What is your ceiling joist size?

How are your ceiling joists spaced?

Is there existing insulation in the attic?

How much existing insulation do you have?

Type (Bottom Layer if any)

Type (Middle Layer)

Type (Top Layer)

-OR-

Heating System

Select the primary or central heating unit installed in your residence

Cooling System

Select the air-conditioning system installed in your residence if there is one. If installed, the selection is based on the Seasonal Energy Efficiency Ratio (SEER) of the equipment

Duct Location

Select the primary location of the air distribution system

R-Value of installed duct work

3 Insulation Needs

What type of insulation do you plan to install?

Desired R-Value

The US Department of Energy recommends R-Values for attic up to R-60
4 Energy Costs

Natural Gas Costs ($/therm)

Default value represents the average for your State.

Propane Costs ($/gal)

Default value represents the average for your State.

Oil Costs ($/gal)

Default value represents the average for your State.

Electric Costs (c/kWh)

Default value represents the average for your State.