Where most cooling dollars leak
Attic Insulation & Air Sealing in Savannah, GA
Seal the ceiling, then build up the insulation, or move the attic inside with foam.
- Free on-site estimates
- Written quotes listing foam type, thickness and R-value
- Moisture, flood-zone and termite access checked before we seal
Stopping Attic Heat in Savannah
Attic insulation and air sealing work together. Sealing closes the holes between your living space and the attic: around light fixtures, top plates, plumbing stacks, chases and the attic hatch. Insulation then slows the heat that radiates down from a roof baking under Savannah's summer sun, where July highs average about 92°F. Doing one without the other leaves money on the table.
How much is enough
Georgia's code calls for R-38 in ceilings of new homes in Climate Zones 2 through 4, which includes Chatham, Bryan and Effingham counties. For an existing attic, the Department of Energy suggests R-49 to R-60 if the attic is empty, or adding R-38 to R-49 on top of 3 to 4 inches already in place. Many older Savannah homes we see have well under that, often settled and uneven.
Two ways to insulate an attic
- On the attic floor. Seal the ceiling, then blow cellulose or fiberglass to the target depth. This is the most affordable route when there is no ductwork or equipment in the attic.
- On the roof deck. Spray foam on the underside of the roof makes the attic part of the cooled space. It makes sense when the air handler and ducts are up there, since they then sit in air near indoor temperature instead of the hottest air in the house.
What we look for
We check bath and kitchen fans to make sure they vent outdoors, look for roof leaks and stains, measure existing insulation depth, look for gaps around recessed lights and note any knob-and-tube wiring in older homes, which needs an electrician before insulation goes over it. Soffit vents need baffles so new insulation does not block them.
Georgia Power rebates
Georgia Power's Home Energy Improvement Program lists rebates for attic insulation, air sealing and duct sealing. For attic insulation, existing insulation must be at or below R-38, the new level should reach R-49 where the attic allows, and the whole attic must be done. Air sealing must be done by a Georgia Power program installer, and applications are due within 60 days of the paid invoice. We are not claiming to be part of the program; check the current rules and installer list on Georgia Power's page. Get a free estimate
What This Covers
Attic work we quote and install.
Ceiling air sealing
Gaps at top plates, fixtures, chases, stacks and the hatch sealed with foam, caulk or board.
Blown-in top-up
Cellulose or fiberglass blown to R-38 to R-49 or more over a sealed ceiling.
Roof deck foam
Open-cell or closed-cell on the roofline to bring attic ducts and equipment inside.
Hatch and stair covers
Insulated, weatherstripped covers for pull-down stairs and hatches.
Baffles
Rafter vents to keep soffit airflow open above deeper insulation.
Kneewalls and bonus rooms
Sealing and insulating the walls and slopes around rooms over garages.
Published Attic Insulation & Air Sealing Costs
| Job | Range and source |
|---|---|
| Attic insulation, average job | $1,000 to $2,700, about $1,800 average (HomeGuide) |
| Air sealing | $350 to $3,000 (HomeGuide) |
| Blown-in, attic | $0.90 to $2.40 per sq ft (HomeGuide attic guide) |
| Spray foam on the attic floor | $1,100 to $6,800 (HomeGuide) |
| Spray foam on the roof deck | $1,500 to $9,000 (HomeGuide) |
| Spray foam, attic (existing home) | $2,500 to $12,000 (Fixr) |
| Old insulation removal | $1 to $2 per sq ft (HomeGuide) |
HomeGuide's January 2026 attic guide and Fixr's 2025 spray foam guide are the sources; both are national. The amount of sealing, the depth, access, removal and roof shape change the total. Once we have been in your attic, the written estimate is the price.
How It Works
1. Attic inspection
Depth measured, leaks, fans, wiring, ducts and venting checked.
2. Written options
Floor sealing plus blown-in, roof deck foam, or both, priced side by side.
3. Seal
Ceiling gaps closed before any insulation goes down.
4. Insulate
Baffles set, insulation installed to the quoted depth, depth markers placed.
5. Wrap up
Hatch insulated, attic cleaned and the work reviewed with you.
Attic Insulation & Air Sealing Questions
How much attic insulation do I need in Savannah?
New homes need R-38 under Georgia's code. For an existing attic, the Department of Energy suggests building up to about R-49, which is also the level Georgia Power's rebate rules point to.
Should I spray foam my attic or blow in insulation?
If ducts or the air handler are in the attic, roof deck foam often pays off. If not, sealing the ceiling and blowing in insulation usually costs much less for similar comfort.
Do you remove old attic insulation?
Yes, when it is wet, moldy, soiled by pests or in the way of air sealing. Otherwise we seal and add on top.
Can air sealing make my house too tight?
Older Savannah homes are rarely close to that. Bath and kitchen fans should vent outdoors, and we check that gas appliances have proper combustion air.
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Get an Attic Insulation & Air Sealing Estimate
Find out what your attic has and what it needs, in writing.