IECC Climate Zone 3

Insulation Standards for
Atlanta, GA

In Atlanta (Zone 3), upgrading attic insulation is the most cost-effective way to combat muggy summers and chilly winter nights.

Advanced ROI Calculator

Calculate savings based on your local climate & energy rates.

Retrofit Target
R-38
Recommended
New Code (2021)
R-49
Strict Standard
Climate Type
Warm (South US)
Source: DOE / IECC

Estimated Insulation Costs in Atlanta

Material TypeCost per Sq. Ft.Avg. 1000 sq.ft. Project
Blown-in Fiberglass$1.95 - $3.15$1950 - $3150
Spray Foam (Closed Cell)$4.88 - $7.88$4875 - $7875
Estimates based on Zone 3 material requirements. Local labor rates in GA may vary.

Why Insulation Matters in Atlanta

Living in Atlanta means dealing with the specific thermal challenges of Climate Zone 3. According to the 2021 International Energy Conservation Code (IECC), homes in this region require specific thermal protection to maintain efficiency and comfort.

💡 Local Energy Tip

Many homes built before 2010 in the 30301 area typically have insulation levels between R-15 and R-30. Upgrading to R-38 is often the single most effective way to lower your utility bills.

Recommended Materials for Zone 3

  • Blown-in Cellulose: Excellent for filling gaps and settling over existing insulation in older Atlanta attics.
  • Spray Foam: Provides both high R-value and air sealing, crucial for preventing drafts in Zone 3.

Ready to Upgrade?

Don't guess with your energy bills. We recommend getting quotes from at least 3 licensed insulation contractors in GA to compare pricing.

Check Another Zip CodeView All Cities