Galveston's raised historic homes and island humidity make spray foam insulation a practical necessity, not a luxury. Whether your house sits on pier-and-beam pilings in the older East End neighborhoods or you own a newer elevated property near the seawall, the combination of salt air, summer heat, and constant moisture means standard insulation fails fast without the right protection.
Houston Spray Foam Insulation has been serving Galveston and the surrounding Houston area since 2012. We understand why homeowners in 77550 call us: closed-cell spray foam is the only insulation that stops moisture from wicking into your attic and crawl space, keeps your cooling bills reasonable during the May-to-October heat, and holds up under the humidity that flattens fiberglass and cellulose in a season or two.
Spray Foam Insulation in Galveston (77550)
Galveston's building stock tells the story. The older historic neighborhoods feature raised cottages and bungalows on pier-and-beam foundations with ventilated crawl spaces and bare subfloors that sweat year-round. The mid-century homes have vented attics where ductwork bakes at 130-150 degrees from May through October, driving cooling costs through the roof. Newer elevated construction near the seawall and throughout the island runs sealed attics with high ceilings and roof decks that radiate heat directly into conditioned space. In every case, humidity is the constant enemy. Vapor drive here runs from the outside in, and condensation on cold ductwork, rim joists, and insulation is the norm unless the insulation itself is a vapor barrier. That means closed-cell foam, not open cell. Closed cell stops moisture dead, holds its R-value year after year, and is the only choice for pier-and-beam subfloors, sealed attics, and crawl spaces in Galveston's climate.
Our crews have worked on raised historic homes, 1950s brick ranches with flattened attic insulation, newer two-story elevated stock, and commercial properties across the Houston area. We know Galveston's building codes, the local moisture challenges, and how to access tight crawl spaces and attics on pilings without damaging the structure.
Our services in Galveston
- Attic Spray Foam Insulation in Galveston · Open-cell foam on the roof deck turns a 140°F Houston attic into conditioned…
- Closed Cell Spray Foam Insulation in Galveston · Two-pound closed-cell foam delivers R-6.5 per inch…
- Open Cell Spray Foam Insulation in Galveston · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Galveston · Injection foam fills closed walls through small drilled ports, no demolition.
- Crawl Space Spray Foam Insulation in Galveston · Closed-cell foam on pier-and-beam subfloors and crawl space walls holds back…
- Rim Joist & Band Joist Spray Foam in Galveston · Band joists, cantilevers and bonus-room floors leak conditioned air at every…
- Garage Spray Foam Insulation in Galveston · Garage ceilings under bonus rooms and walls shared with the house…
- Metal Building & Barndominium Spray Foam in Galveston · Closed-cell foam is the only insulation that stops a Texas metal building from…
- Commercial & New Construction Spray Foam in Galveston · Warehouses, offices, churches and production builders served on schedule.
- Insulation Removal in Galveston · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Galveston · The full reset: old material removed, gaps air-sealed…
- Air Sealing in Galveston · Top plates, can lights, chases and hatches leak more cooled air than most walls.
How a Job Works in Galveston
We start with a free on-site assessment. One of our team members visits your property, inspects the attic, crawl space, rim joists, or walls you want insulated, and looks for moisture, damp insulation, or contaminated material that has to be removed first. We measure the area, discuss your comfort concerns and budget, and answer your questions about closed cell versus open cell, R-value requirements, and what the local building department requires at your address. You get a written estimate with R-value and thickness specifications so you know exactly what you are paying for.
On work day, we set up mechanical ventilation to manage odor and vapor during the cure. Our crews spray the foam in controlled passes, maintaining the manufacturer ratio and drum temperature so the foam expands and cures properly. If insulation has to come out first, we remove it and haul it away. We do not spray over wet, contaminated, or leaking substrates. If moisture is present, we fix the source or we walk away. Once the foam is cured, typically within twenty-four to forty-eight hours, your attic, crawl space, or sealed rim joist is ready to use again.
We clean up as we go and do a final walkthrough with you. Your property leaves clean.
Pricing for spray foam insulation in Galveston depends on the area to cover, the R-value and thickness you need, whether you choose closed cell or open cell, and what has to be removed first. Attic foam typically runs from $1.50 per square foot for a straightforward top-up to higher figures if old insulation has to come out. Closed-cell foam starts at $1.20 per board foot. Open-cell foam starts at $0.55 per board foot, though in Galveston's humid climate, closed cell is almost always the right choice. Wall and injection foam retrofit runs from $2 per square foot. Crawl space work starts at $2,500 and varies with the area and whether vapor barrier or encapsulation work is needed. Rim and band joist sealing starts at $650. Insulation removal runs from $950. A free estimate at (346) 322-2588 is the only way to know the real cost for your house. We will walk you through what drives the price and why closed cell makes sense in Galveston.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Galveston and nearby areas.
