Harrison County's port city
Spray Foam Insulation in Gulfport, MS
Railroad-era neighborhoods, postwar growth and newer subdivisions.
- Free on-site estimates
- Written quote with material, thickness and R-value for every area
- Leaks, moisture and termite inspection access checked before we spray
Insulating the Coast's Largest City
Spray foam insulation in Gulfport covers a wide range of houses. The city was founded in 1887 by William H. Hardy as the terminus of the Gulf and Ship Island Railroad and grew fast: about 1,000 people in 1900, over 6,000 by 1910, around 22,000 by 1950 and 30,000 by 1960. In 1965 it annexed the older Mississippi City and Handsboro areas. The 2020 census counted 32,737 housing units, 11.8 percent vacant.
Older neighborhoods
Homes near downtown and the old railroad have older attics, crawl spaces and wood floors. Typical needs: attic sealing and depth, sealing ducts, and either encapsulating the crawl space or foaming the floor.
Postwar and newer homes
World War II brought two bases to Gulfport, including what became the Naval Construction Battalion Center, and the city boomed. Brick ranch homes on slabs from that era and later mostly need attic work. Newer subdivisions north of I-10 often have ducts in the attic, where roof-deck foam can help.
Metal buildings
Larger lots north of town often have metal shops. Closed-cell foam stops sweating steel.
What the visit looks like
We start in the attic, measure what is there in several spots and look at the ducts, the air handler platform and the ceiling penetrations. Then we look under the house if there is a crawl space or raised floor. The written quote lists each area separately so you can choose what to do now and what can wait.
Code
Harrison County is in Climate Zone 2A; Gulfport is among the Mississippi cities that adopted a local residential code. ENERGY STAR suggests R-49 for an uninsulated Zone 2 attic. Get a free estimate
What to Know in Gulfport
- Founding. Gulfport was founded in 1887 by William H. Hardy as the terminus of the Gulf and Ship Island Railroad.
- Growth. Gulfport grew from about 1,000 people in 1900 to over 6,000 by 1910, around 22,000 by 1950 and 30,000 by 1960; it annexed Mississippi City and Handsboro in 1965.
- Housing. The 2020 census counted 32,737 housing units in Gulfport, 11.8% vacant.
- Code. Harrison County is in Climate Zone 2A; Gulfport is listed among Mississippi localities that adopted their own residential code.

Gulfport Questions
What does a postwar Gulfport ranch usually need?
Attic air sealing and depth, and sealing ducts in the attic.
Do you insulate shops north of I-10?
Yes, with closed-cell foam on steel.
Can you encapsulate an older crawl space?
Yes, with a vapor barrier, sealed vents and insulated walls.
Do you serve all of Gulfport?
Yes, including Handsboro and Orange Grove.
Free Estimates in Gulfport, MS
Gulfport homes and shops: free estimates.
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