Spray Foam Insulation in Savannah, GA

Spray foam insulation in Savannah has one main job: keeping hot, wet coastal air out of the house. July afternoons at the Savannah/Hilton Head airport average about 92.3°F, August relative humidity averages 78.6%, and summer dew points sit between roughly 68°F and 72°F. We are Spray Foam Insulation Savannah, and we seal and insulate attics, crawl spaces, raised floors and walls across Savannah and the nearby towns of Chatham, Bryan and Effingham counties.

What Savannah homes are like

Savannah's median home was built in 1971, and about 16.2% of homes date to before 1940, according to 2019 to 2023 census estimates. Downtown's National Historic Landmark District and the Victorian District hold some of the oldest houses in Georgia, while Midtown streets like Ardsley Park are full of early 20th century homes. Older houses here often have thin, settled attic insulation, open stud walls behind plaster and vented crawl spaces with batts that have fallen down. Newer subdivisions in Pooler, Port Wentworth, Richmond Hill and Rincon tend to have ductwork in hot attics and bonus rooms over garages.

Georgia's code and Climate Zone 2A

Chatham, Bryan and Effingham counties are all listed in Climate Zone 2A, the hot-humid zone. Georgia's residential energy code is the 2015 IECC with Georgia amendments, in force since January 1, 2020, and it aligns Zones 2 through 4 at R-38 for ceilings and R-13 for wood-frame walls, with a 5 ACH50 air leakage limit for new homes. For existing homes, the U.S. Department of Energy suggests R-49 to R-60 for an uninsulated Zone 2 attic, or adding R-38 to R-49 where 3 to 4 inches are already there, plus R-13 under floors.

Closed cell vs open cell

Closed-cell foam is dense and rigid, roughly R-5 to R-7 per inch, and slows water vapor as well as air. It is the right call under raised floors, on crawl space walls and rim joists, on metal buildings and anywhere flooding is possible: FEMA's 2025 flood-resistant materials bulletin rates closed-cell foam acceptable below flood elevation and open-cell foam unacceptable. Open-cell foam is softer, around R-3.5 to R-3.7 per inch, costs less, and is the usual pick on the roof deck when the air handler and ducts live in the attic.

Spray foam insulation cost

HomeGuide puts installed spray foam at about $1.50 to $5.00 per square foot: $1.50 to $3.50 for open cell and $3.00 to $5.00 for closed cell. A roof deck runs about $1,500 to $9,000, crawl space encapsulation about $3,000 to $15,000, and an average attic insulation job about $1,000 to $2,700. Many foam jobs carry a $1,000 to $2,000 minimum. One local cost factor: homes in flood zones usually need closed cell below the flood line, which sits at the higher end of those ranges. Your written estimate is the price you pay.

Humidity, crawl spaces and termites

Savannah sits only a few feet above sea level and gets about 48 inches of rain a year, so many crawl spaces stay damp all summer. Foam does not fix a wet crawl space, so drainage and leaks come first. Chatham County requires proof of termite soil treatment for new homes, and foam on foundation walls can hide termite tubes, so we plan inspection gaps and work with your pest control company.

Georgia Power rebates

Georgia Power, which took over Savannah Electric in 2006, runs a Home Energy Improvement Program with rebates for attic insulation and air sealing. Its attic rules include existing insulation at or below R-38, adding enough to reach R-49 and treating the whole attic, and air sealing must be done by one of its program installers. Rules and amounts change, so read the program page before you plan around a rebate.

Choosing among spray foam insulation contractors

Whether you search for spray foam insulation contractors near me or call insulation companies off a yard sign, ask every bidder the same things in writing: which foam goes where, how thick, what R-value, how they handle crawl space moisture, flood-zone rules and termite inspection access, and how long you need to stay out while it cures. Good insulation contractors put those answers on paper. So do we. Get a free estimate

We work throughout Savannah, from the downtown squares and Midtown to the Southside and west Chatham. Close by we cover Garden City, Pooler, Port Wentworth and Bloomingdale to the west, Thunderbolt, Wilmington Island, Isle of Hope, Skidaway Island and Tybee Island to the east and south, and Georgetown along the Little Ogeechee. Across county lines we serve Richmond Hill in Bryan County and Rincon, Guyton and Springfield in Effingham County. Each town page explains what is different there, from 1880s beach cottages to 1970s subdivisions and brand-new neighborhoods.