Compare the highest-rated insulation professionals in Nassau, New York. All contractors are licensed, insured, and verified through our rigorous screening process.
A leading and highly specialized insulation contractor serving all of Long Island. They are renowned for their expertise in high-performance spray foam and their comprehensive approach to building envelope optimization, which includes detailed energy audits and air sealing. They are a go-to provider for both residential and commercial projects, emphasizing significant energy savings and comfort.
This company has built a strong reputation specifically on attic services but has expanded to become a full-service insulation contractor. They are praised in customer reviews for their professionalism, cleanliness, and effectiveness in solving comfort issues related to poor attic insulation. They are well-versed in available rebates and incentives.
A well-established, full-service home performance contractor that treats insulation as a core component of a holistic energy efficiency system. They are a certified BPI (Building Performance Institute) company, which is a gold-standard credential in the industry. Their services are ideal for homeowners looking for a complete solution that integrates insulation with heating, cooling, and air quality.
The insulation market in Nassau County, New York, is mature and highly competitive, driven by the region's older housing stock, high energy costs, and variable climate. The average quality of service is high, with several established players holding professional certifications (like BPI) and specializing in modern materials like spray foam. Homeowners are increasingly aware of the benefits of air sealing in conjunction with insulation. Due to the high cost of living, pricing is typically at a premium compared to national averages. A basic attic blow-in project might start in the $1,500 - $3,000 range, while a full-home spray foam application or a complex retrofit with air sealing can run from $8,000 to $20,000 or more. The market is also influenced by New York State energy rebate programs (like NYSERDA), which reputable contractors are adept at navigating for their clients. Consumers are advised to seek multiple quotes and verify licensing and insurance.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Nassau regulations and climate
Get answers to common questions about insulation services in Nassau, New York.
For Nassau County's humid summers and cold winters, spray foam (especially closed-cell) is highly effective as it provides superior air sealing and moisture resistance, crucial for managing humidity. However, for many homes, a combination of air-sealed dense-packed cellulose or fiberglass in walls and blown-in insulation in attics offers excellent thermal performance and value. The "best" type depends on your home's construction, budget, and specific air leakage issues, which a professional energy audit can identify.
Costs vary widely based on the insulation material, home size, and areas treated. For a standard attic insulation project (blown-in cellulose or fiberglass), Nassau homeowners can expect to pay between $1,500 and $3,500. Whole-house projects like dense-packing walls or spray foam can range from $5,000 to $15,000+. It's important to get multiple itemized quotes, and remember that New York State and local utility programs (like PSEG Long Island's rebates) often offer significant incentives that can reduce your net cost by 25-50%.
Insulation can be installed year-round, but the best times are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather in Nassau County, which is ideal for contractors to work effectively and for proper curing of materials like spray foam. Scheduling during these shoulder seasons also ensures your home is prepared before the peak heating and cooling demands of winter and summer, and you'll find greater contractor availability than in the high-demand summer months.
Yes, all insulation work must comply with the New York State Energy Conservation Construction Code (NYSECCC), which Nassau County enforces. This code sets minimum R-value requirements for different parts of your home (e.g., attic insulation often needs R-49 to R-60). Additionally, any contractor must be licensed by the Nassau County Department of Consumer Affairs. For work in historic districts or on older homes, you may need to check with your local village or town building department for any additional preservation guidelines.
While adding attic insulation is a great start, draftiness often points to a larger air sealing problem that insulation alone won't fix. In Nassau's windy coastal climate, sealing air leaks around windows, doors, plumbing penetrations, and recessed lights is critical. We recommend a comprehensive home energy audit first, which is often subsidized by PSEG Long Island. This audit will use a blower door test to pinpoint the exact sources of air leakage, allowing you to prioritize the most cost-effective air sealing and insulation upgrades for maximum comfort and savings.