Closed-cell foam under raised floors and on crawl space walls: warmer floors in winter, less damp air in summer.
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A lot of South Mississippi homes sit on crawl spaces or raised floors, and the air down there is warm and wet most of the year. When that humid air reaches cool floor framing and ductwork, it condenses, which leads to sweating ducts, musty smells, sagging fiberglass and cold floors in winter. Closed-cell spray foam bonds to the framing, air-seals the gaps and acts as a vapor retarder at about 1.5 to 2 inches, so it keeps the damp air out of the house.
Crawl space jobs depend on the square footage, access and whether old insulation needs to come out first. Every job is different, so we measure in person and give you a free written quote with each area, the foam type and the thickness spelled out. The number on the quote is the number you pay.
Get My Free QuoteFiberglass slows heat but lets air leak straight through. Spray foam fills every gap as it insulates, so the air you pay to cool stays inside.
Open-cell where you want air sealing and sound control, closed-cell where moisture, raised floors or metal buildings call for it. We don't sell one foam for everything.
Our crew works on HVAC systems every day, so we insulate with the AC and ductwork in mind, not just the R-value on paper.
Most bad spray foam jobs go wrong for the same few reasons. Here’s what to check before you hand anyone a deposit:
Open-cell and closed-cell do different jobs. A good installer tells you which goes where and why, instead of quoting one foam for the whole house.
A quote should list the foam type and the thickness for each area. A low price with no thickness listed usually means thin foam.
In a Southern home the ducts usually run through the attic. Sealing the attic changes how the system works, so ask whether the installer understands HVAC.
Foam in attics, crawl spaces and living areas may need a protective coating or covering, depending on how the space is used. A pro knows the local requirements.
Foam isn't a fix for a leaking roof or standing water in a crawl space. A good installer checks for moisture and tells you if something needs repair before spraying.
Seal the attic under the roof deck, so upstairs rooms stop baking in summer and the AC stops running all afternoon.
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Open- or closed-cell foam in open stud walls for new construction, additions, remodels and bonus rooms.
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Closed-cell foam for shops, pole barns, garages and metal buildings. Stops the roof from sweating and makes the space usable in August.
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Spray foam for warehouses, churches, offices, restaurants, schools and commercial metal buildings across South Mississippi.
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Whole-home air duct cleaning and dryer vent cleaning, with before-and-after photos so you can see exactly what came out.
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South MS Spray Foam