Spray Foam Insulation in Shreveport, LA

Spray foam insulation in Shreveport has one main job: keeping the heat and the moisture outside. The city's 1991-2020 climate normals show July and August afternoons averaging about 94 to 95F, roughly 91 days a year at 90F or hotter, and average relative humidity of 72%. Your air conditioner fights that every day from May into October, and it loses ground through every gap in the attic and every leaky duct. We seal those leaks and insulate the spaces that need it, using open-cell or closed-cell spray foam where it earns its keep and blown-in insulation where that does the job for less. If you have been searching for spray foam insulation contractors or insulation companies near me in the Shreveport-Bossier area, this page lays out how we work, what it tends to cost and what to ask any installer.

What the Louisiana code asks for

Louisiana adopted the 2021 International Residential Code, which took effect on July 1, 2023, and for energy code purposes the whole state is treated as Climate Zone 2. A summary published by the Insulation Institute lists the prescriptive minimums for that zone as R-38 in ceilings and R-13 in wood-frame walls, with a whole-house air leakage limit of 7 air changes per hour at 50 pascals, and blower door testing required on new homes from July 1, 2024. The Department of Energy's recommendations for existing homes in Zone 2 go further in the attic: R-49 to R-60 for an attic with no insulation, or an added R-38 to R-49 where 3 to 4 inches already sit on the attic floor.

A city full of 1950s to 1970s houses

Shreveport was founded in 1836 where the newly cleared Red River met the Texas Trail, and it grew fast during the oil years of the early 20th century. Census estimates for 2019-2023 put the median year a Shreveport home was built at 1973, and about 64% of its homes went up before 1980. Houses from that era were built before modern energy codes. They usually have a few inches of settled fiberglass in the attic, ductwork running through that attic, and ceilings full of gaps around lights, vents and plumbing. Those are the leaks we chase first, because air sealing a ceiling plane often does more for comfort than any single layer of insulation.

Closed cell vs open cell in a hot, humid climate

Open-cell foam is soft and light. It expands to fill a cavity, blocks air movement and quiets sound, and HomeGuide lists it at about R-3.5 to R-3.7 per inch. Closed-cell foam is dense and rigid, rated about R-5 to R-7 per inch, and at normal thickness it slows water vapor and does not soak up water. In north Louisiana, open-cell is common under roof decks when an attic is brought inside the conditioned space, because it is cheaper per inch and lets a roof leak show itself instead of hiding it. Closed-cell makes more sense on crawl space walls, on rim joists over a damp crawl, on metal buildings that sweat, and anywhere space is tight. Plenty of attics need neither: sealing the ceiling and blowing loose fill to depth can reach the Department of Energy target for less money.

Spray foam insulation cost

National guides give a sense of scale. HomeGuide puts installed spray foam at about $1.50 to $5.00 per square foot, with open cell near $1.50 to $3.50 and closed cell near $3.00 to $5.00, and roughly $1,500 to $5,000 for about 1,000 square feet. Fixr lists $3.15 to $7.50 per square foot for walls in an existing home and $2.75 to $6.50 in new construction. A whole house can run $8,000 to $20,000 per HomeGuide, or $10,000 to $30,000 per Fixr, and small jobs often hit a minimum of $1,000 to $2,000 or more. Those are national ranges. The price you pay is the one on the written estimate we give you after we see the house.

Help from SWEPCO

SWEPCO lists a weatherization program that helps pay for insulation, caulking and weatherstripping through its approved contractors, and households that meet federal poverty guidelines may qualify for those measures at no cost. The incentive shows up in the approved contractor's quote. If you are a SWEPCO customer, ask any installer whether they are on that list before you sign.

What to ask any insulation contractor

Ask what thickness and target R-value they plan for each area, and get it in writing. Ask how they will handle air sealing before insulation goes in, how they will keep ductwork, recessed lights and the attic hatch sealed, and what they do with wet or dirty old insulation. Ask how long you need to stay out after spraying; HomeGuide advises leaving for 24 hours or more while the foam cures. And ask whether any part of the house would be better served by something cheaper than foam. A good answer to that last question tells you a lot.

Get a free estimate or call (318) 378-5233 to set up a visit.

We work across Shreveport and Bossier City and out into the towns around them. In Caddo Parish that means Blanchard and Greenwood on the edges of the metro, and the Caddo Lake towns of Mooringsport, Oil City and Vivian to the north. In Bossier Parish it means Benton, the parish seat, and Haughton, one of the fastest-growing towns in the area, plus Plain Dealing near the Arkansas line. To the east we reach Minden in Webster Parish, and to the south Stonewall and Mansfield in DeSoto Parish.

The housing changes as you drive out. Shreveport's older neighborhoods are mostly 1950s to 1970s houses, while Bossier City, Haughton and Blanchard added a lot of newer homes in the last two decades. The lake towns hold older, smaller houses near the water, and the rural parishes have more metal shops, barns and manufactured homes. Each town page lists what we found about its housing and history, with sources.