Crawl Space Insulation in Metro Atlanta
Crawl space insulation in a humid climate like Metro Atlanta means insulating the foundation walls of a sealed crawl space rather than the floor above it, because wall insulation in a sealed crawl space keeps the space at house temperature and eliminates the condensing surface that fiberglass floor batts create.
- Typical range
- $1,800 – $6,500
- Unit pricing
- $2.5–$6 per square foot of wall or floor area insulated
- Time on site
- 1 to 3 days on site
- Permit
- Not required
What insulation costs
Removing failed fiberglass batting and insulating the foundation walls of a 1,400 square foot crawl space with rigid foam board typically runs $3,000 to $5,500 in Metro Atlanta.
| Line item | Low | High | Unit |
|---|---|---|---|
| Removal and disposal of failed fiberglass batting | $0.7 | $1.6 | sq ft |
| Rigid foam board on foundation walls, R-10 | $2.5 | $4.5 | sq ft of wall |
| Closed-cell spray foam on foundation walls | $3.5 | $6 | sq ft of wall |
| Rim joist insulation and air sealing | $9 | $18 | linear ft |
| New R-19 or R-30 batts between joists, vented crawl only | $1.6 | $3.2 | sq ft |
| Ignition barrier coating over exposed foam where required | $0.9 | $2 | sq ft |
What drives the number
- Removal and disposal of existing wet or contaminated fiberglass batting
- Wall insulation versus floor insulation approach
- Material choice, from rigid foam board to closed-cell spray foam to mineral wool
- R-value target and the required ignition barrier detail
- Whether the crawl space is being sealed at the same time, which changes the correct approach entirely
These ranges are a planning model built for this site, not a survey of what other contractors charge. It has three inputs. Material quantities are taken off a reference 1,400 square foot crawl space with 150 linear feet of foundation wall, priced at Metro Atlanta supplier list rates. Labour hours are costed against Bureau of Labor Statistics wage data for the Atlanta metropolitan area, where the mean hourly wage was $34.57 in May 2025. Permit fees come from the published schedules of the jurisdictions listed on this site. .
Signs you need insulation
- Insulation batts hanging down or lying on the crawl space floor
- Cold floors in winter directly above the crawl space
- Higher heating and cooling bills than comparable neighboring homes
- Visible dark staining on the paper facing of old batts
- Rodent nesting inside the existing insulation
Terms you will hear
R-value, rigid foam board, closed-cell spray foam, rim joist, thermal bridge, ignition barrier. These come up in every honest quote for this work. A quote that avoids all of them is describing a product rather than a repair.
When insulation is the wrong purchase
Do not re-insulate a crawl space that still has a moisture problem. New batting in a humid crawl space fails on the same schedule the old batting did.
Transparent pricing, published first
Every service page shows line-item ranges and the local factors that move them, before you call. If a quote you receive falls outside them, you have something concrete to ask about.
A written scope before any work starts
Written scope and price before any work starts. Quotes are honored for 30 days.
Response time we hold ourselves to
A crawl space specialist calls back within 60 minutes during posted hours, and by 9:00 AM the next morning for after-hours calls.
Licensing you can verify yourself
Georgia requires contractor licensing above $2,500 in project value. Ask for the number, then check it against the state register yourself. Georgia Secretary of State licence lookup
How insulation is done
- 1Assess the existing insulation for moisture content, sagging and contamination
- 2Decide the assembly: sealed crawl space with wall insulation, or vented crawl space with floor insulation
- 3Remove and bag failed batting
- 4For a sealed crawl space, install rigid foam or closed-cell foam on the interior of the foundation walls, holding the required termite inspection gap
- 5Insulate and air seal the rim joist, the largest single air leak in most crawl spaces
- 6Apply the ignition barrier where the code official requires it
- 7Verify the assembly is continuous with no thermal bypasses at corners and penetrations
Crawl Space Insulation by city
Dedicated pages, each with that city’s permit office, housing stock and local price factors:
We also cover insulation in these cities. Each city hub carries its local conditions and permit path:
Crawl Space Insulation: common questions
What is crawl space insulation?
Crawl space insulation in a humid climate like Metro Atlanta means insulating the foundation walls of a sealed crawl space rather than the floor above it, because wall insulation in a sealed crawl space keeps the space at house temperature and eliminates the condensing surface that fiberglass floor batts create.
How much does insulation cost in Metro Atlanta?
Removing failed fiberglass batting and insulating the foundation walls of a 1,400 square foot crawl space with rigid foam board typically runs $3,000 to $5,500 in Metro Atlanta. These ranges are a planning model built for this site, not a survey of what other contractors charge.
How long does insulation take?
1 to 3 days on site. The schedule extends when a permit and inspection are involved, or when water has to be intercepted before the main work can start.
Do I need a permit for insulation in Georgia?
Insulation replacement does not require a permit, but the Georgia energy code requires an ignition barrier or thermal barrier over foam plastic in some crawl space conditions. Confirm the detail with the inspector before installing exposed foam.
When is insulation the wrong purchase?
Do not re-insulate a crawl space that still has a moisture problem. New batting in a humid crawl space fails on the same schedule the old batting did.
More reading: Crawl Space Encapsulation Problems · Crawl Space Smells Like Cat Pee (And You Have No Cat) · Crawl Space Vents: Open or Closed in Georgia?