Compare the highest-rated insulation professionals in Greenvale, New York. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, full-service insulation and energy efficiency contractor serving Long Island. They are known for comprehensive energy audits and using advanced solutions like spray foam to address air sealing and insulation simultaneously. They are often recommended for their expertise in modern building science.
Part of a national franchise with a strong local presence, this provider focuses on eco-friendly and health-conscious insulation and air quality solutions. They excel in attic projects, crawl space encapsulation, and mold prevention through proper insulation and ventilation strategies.
A dedicated insulation contractor known for personalized service and expertise in both new construction and retrofit projects. They are particularly skilled with blown-in cellulose and fiberglass for attics and walls, making them a great choice for upgrading existing homes without major renovations.
** The insulation market in the Greenvale and broader Nassau County area is robust and competitive, driven by the prevalence of older housing stock (e.g., mid-20th century colonials and capes) and some of the highest energy costs in the nation. The average quality of service is high, as contractors must be licensed by the Nassau County Department of Consumer Affairs and compete in a discerning market. Homeowners are increasingly aware of rebates from NYSERDA (New York State Energy Research and Development Authority) and utility providers like PSEG Long Island, which has raised the standard for contractors to be knowledgeable about energy efficiency and incentive programs. Typical pricing is at a premium compared to national averages. For a standard attic blown-in insulation job, homeowners can expect to pay **$1,500 - $4,500**, while more comprehensive spray foam applications can range from **$3,500 to $10,000+** depending on the project's scale and the foam type (open vs. closed cell). The competition ensures that multiple quotes are advisable, but the top-tier providers maintain strong pricing based on their expertise, certifications, and quality of materials.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Greenvale regulations and climate
Get answers to common questions about insulation services in Greenvale, New York.
For Greenvale's humid summers and cold winters, spray foam insulation is often recommended for its superior air-sealing and high R-value per inch, which is critical for energy efficiency. However, blown-in cellulose or fiberglass are excellent, cost-effective options for existing attics, providing strong thermal performance. A professional assessment is key, as your home's specific construction and existing ventilation will determine the best material to prevent moisture issues common in our region.
Costs vary based on material, attic size, and existing conditions, but for a standard 1,500 sq ft attic in Greenvale, you can expect to pay between $1,500 to $4,500. Blown-in fiberglass is generally on the lower end, while spray foam is a premium investment. It's important to factor in potential rebates from NYSERDA (New York State Energy Research and Development Authority) and local utilities like PSEG Long Island, which can significantly offset your final cost for qualifying upgrades.
While insulation can be installed year-round, the ideal times are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather in Greenvale, which is optimal for the work and allows contractors to properly assess and address attic ventilation without extreme heat or cold. Scheduling during these shoulder seasons also helps you prepare your home for peak heating and cooling demands.
Always verify the contractor is licensed and insured to work in New York State. Look for companies with specific experience in Greenvale/Nassau County homes, as they will understand local building codes and common issues like coastal humidity. Crucially, choose a provider that performs a comprehensive energy audit or assessment first, and ask for proof of their certification from manufacturers (like Owens Corning or CertainTeed) and their familiarity with NYSERDA programs.
Not entirely. While adding insulation (like in walls or attics) is vital for thermal resistance, drafts are caused by air leaks. In Greenvale's windy winters, a comprehensive approach is needed: first, a professional should perform an air-sealing service to caulk and seal gaps around windows, doors, and penetrations in the building envelope. Then, adding the proper insulation will work effectively. This two-step process is the standard for achieving true comfort and energy savings in our climate.