Is your first floor always cold in winter? Do you notice musty smells or high humidity indoors? Your crawl space could be the cause. At Spray Foam Long Island, we help Long Island homeowners eliminate hidden comfort problems with professional crawl space spray foam insulation. Our team uses high-performance closed-cell foam to seal out moisture, drafts, and pests, making your home warmer, healthier, and more energy-efficient from the ground up.
Crawl spaces are often damp, uninsulated voids under your home. In Long Island’s fluctuating climate, this area can become a major source of energy loss and moisture problems. Without proper insulation, cold air seeps in during the winter, and humid air rises into your living space in the summer.
Spray foam insulation transforms your crawl space into a dry, sealed barrier that supports year-round comfort and healthier indoor air.
We use closed-cell spray foam for crawl space insulation because it solves multiple problems at once. Unlike fiberglass, which can sag or soak up moisture, closed-cell foam provides both insulation and air sealing, locking out cold drafts and damp air in one step.
Fiberglass and rigid foam board can leave gaps or degrade over time. Spray foam stays sealed and effective for decades.
Our approach is designed to address the specific needs of crawl spaces in Long Island’s climate. Every job starts with a full inspection and customized plan.
We check for standing water, ground moisture, and structural issues before proceeding.
Rim joists are often a major source of air leaks; we fully insulate and seal these areas with foam.
We apply closed-cell foam to crawl space walls and the perimeter of the floor. This creates a continuous barrier against outside air and moisture.
For homes with unsealed dirt floors, we install a vapor barrier before applying foam.
We inspect for full coverage and cleanliness, ensuring the work meets high standards.
According to the U.S. EPA, properly sealing and insulating your crawl space can reduce heating and cooling costs by up to 15%. (Source: EnergyStar.gov)
Costs vary by size and condition, but most projects in Long Island range from $2,500 to $5,500. We offer free estimates and honest recommendations.
If your crawl space has a dirt floor or signs of ground moisture, we may recommend adding a vapor barrier beneath the foam.
Most crawl space insulation jobs are completed in 1–2 days with minimal disruption.
Yes. Insulating the crawl space reduces heat loss, resulting in noticeably warmer floors during the winter.
If your home has a basement instead, check out our basement insulation services. We also offer attic insulation and wall insulation for a complete whole-home energy upgrade.
Don’t let your crawl space be the weakest link in your home’s comfort and efficiency. Let our local team assess your space and recommend the right insulation solution.
Contact us for a free crawl space inspection and estimate, no pressure, just professional guidance.
