Do your walls feel cold in winter or warm to the touch in summer? Are you noticing drafty rooms or uneven temperatures throughout your home? If so, your walls may be under-insulated or not insulated at all. At Spray Foam Long Island, we help Long Island homeowners transform comfort and cut energy waste with professional spray foam wall insulation. Whether you’re building a new home or upgrading an older one, our experts seal wall cavities with high-performance foam for lasting energy savings and noise control.
Up to 30% of a home’s heating and cooling energy can be lost through walls if they’re not properly sealed and insulated. This is especially common in older Long Island homes built before modern energy codes. Wall cavities often have little insulation or old fiberglass that has settled, shifted, or collected moisture.
Spray foam wall insulation stops this energy loss by filling every gap with an airtight seal. It eliminates hidden drafts, reduces temperature swings, and helps keep your home’s interior comfortable year-round.
Exterior walls are one of the most important areas to insulate. In Long Island’s four-season climate, exterior walls face intense temperature shifts from cold to humid heat.
Closed-cell spray foam is the best choice for these walls. It offers:
This type of insulation is ideal for new construction and retrofit wall insulation, even in older homes with plaster or drywall. We can access wall cavities by drilling small holes, applying foam, and patching them cleanly.
Want a quieter home? Open-cell spray foam is an excellent solution for interior wall insulation, especially between bedrooms, bathrooms, home offices, or media rooms.
It expands to fill cavities and absorb sound vibrations, ideal for:
Looking to make your garage walls more livable or reduce street noise in your home? Visit our Garage Insulation page to learn more.
We offer solutions for both new builds and retrofits:
We spray foam directly into open stud bays before drywall goes up, ensuring full, gap-free coverage.
For finished homes, we offer injection foam insulation. We drill small holes in wall surfaces (usually behind siding or inside drywall), inject spray foam, and patch cleanly.
Note: In some cases, drywall removal may be needed for full access. Our team will walk you through all prep work options during your consultation.
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.
nitial inspection and consultation We assess insulation levels, wall access points, and structural conditions.
Based on your goals, we recommend open-cell or closed-cell foam for each wall type.
We protect floors, furniture, and wiring. Electrical systems are reviewed for compatibility.
We inject or spray foam into wall cavities, ensuring complete, continuous coverage.
Drill holes are sealed and surfaces restored. We leave your space clean and insulated.
We follow all Long Island energy codes and building guidelines for safe, lasting wall insulation.
Yes. We use minimally invasive injection methods to insulate walls in existing homes, typically without removing drywall.
Yes. Spray foam is safe when applied correctly. We ensure it doesn’t interfere with electrical lines or junction boxes.
Absolutely. Open-cell spray foam is excellent at absorbing sound and improving room-to-room privacy.
Spray foam insulation can last 30 years or more with no sagging or loss in performance.
Most Long Island wall insulation projects range from $2,500 to $6,000, depending on wall type and size. We offer free estimates.
Don’t forget the attic, it’s often the #1 source of energy loss. Learn more about attic insulation to complete your home’s energy upgrade.
Interested in whole-home solutions? We also insulate crawl spaces and garages.
For commercial wall insulation in larger buildings or offices, visit our commercial services.
Stop energy loss at the source. Let our experienced Long Island team inspect your walls and recommend the best insulation strategy for comfort, savings, and peace of mind.
Contact us for a free wall insulation inspection and estimate, no pressure, just professional guidance.
