Insulation Calculator: How Much Do You Really Need?

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Ready to calculate insulation? Use our Insulation Calculator to determine your needs.

Proper insulation is one of the best investments for your home. This guide explains everything.

Understanding R-Values

R-value measures insulation's resistance to heat flow. Higher = better insulation.

Recommended R-Values by Region

| Region | Attic | Walls | Floor | |---------|-------|-------|-------| | Southern US | R30-R49 | R13-R21 | R19-R30 | | Middle US | R38-R60 | R13-R21 | R25-R30 | | Northern US | R49-R60 | R13-R21 | R25-R30 |

Types of Insulation

Fiberglass Batts

• Most common
• Easy to install
• $0.30-$0.80 per sq ft

Spray Foam

• Excellent air sealing
• $1.00-$3.00 per sq ft
• Two types: Open-cell and Closed-cell

Blown-In

• Good for attics and hard-to-reach areas
• $0.50-$1.50 per sq ft

Rigid Foam

• High R-value per inch
• Good for basements
• $0.50-$1.50 per sq ft

Calculating Your Needs

1. Measure the area to insulate
2. Determine required R-value
3. Calculate material needed
4. Don't forget vapor barriers and air sealing

Use our Insulation Calculator for accurate estimates.

Energy Savings

Proper insulation can reduce heating and cooling costs by 15-30%.

Conclusion

Use our Insulation Calculator to determine exactly how much insulation you need!