Compare the highest-rated insulation professionals in Greenbelt, Maryland. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, full-service home performance contractor serving the DC Metro area, including Greenbelt. They are known for comprehensive energy audits and a wide range of insulation solutions, particularly spray foam and blown-in insulation. They emphasize whole-home solutions that combine air sealing with insulation.
A large, well-established regional contractor offering a vast array of home services, including a dedicated insulation division. Their strength lies in their extensive resources, availability for large projects, and long-standing reputation throughout Maryland and Virginia. They are a one-stop shop for insulation, HVAC, and plumbing needs.
A specialist contractor focusing on the building envelope, including roofing, siding, gutters, and insulation. They receive exceptional marks for customer service and quality of workmanship. Their expertise in exteriors gives them a unique advantage in addressing insulation issues that intersect with roofing and wall systems.
** The insulation market in Greenbelt, MD, is competitive and service-oriented, driven by the city's older housing stock (many homes built mid-20th century) and homeowner demand for lower energy bills. The average quality of providers is high, as the Maryland Home Improvement Commission (MHIC) licensing requirements help regulate the industry. Competition is strong between a few dominant regional players and several highly-rated local specialists. Homeowners in Greenbelt are typically well-informed about available rebates and tax credits, such as the federal ENERGY STAR tax credit and local utility incentives (e.g., from Pepco), which reputable contractors are adept at navigating. Typical pricing is in line with the broader Washington D.C. metro area. For a standard attic air sealing and blown-in cellulose insulation project, homeowners can expect to invest between **$2,500 and $5,000**. Spray foam insulation is a premium option, with costs often ranging from **$4,500 to $8,500+** for an entire attic, depending on the board feet and foam type (open vs. closed cell). It is highly recommended that homeowners obtain at least three detailed quotes, including a blower door test as part of an energy audit, to accurately diagnose issues and compare proposals.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Greenbelt regulations and climate
Get answers to common questions about insulation services in Greenbelt, Maryland.
For our humid continental climate with hot summers and cold winters, blown-in cellulose or fiberglass in attics is often the best value, balancing performance and cost. In Greenbelt, attic insulation projects typically range from $1,500 to $3,500 depending on home size, existing insulation, and the chosen R-value. It's a high-return investment, as Maryland offers various energy efficiency rebates and the work can significantly reduce year-round heating and cooling costs with BGE or Pepco.
The ideal times are late spring (April-May) and early fall (September-October). These periods offer mild temperatures in Maryland, making it easier for contractors to properly install materials like spray foam, which is temperature-sensitive. Scheduling during these shoulder seasons also ensures your home is prepared for both summer heat and winter cold, and you'll find greater contractor availability compared to the peak summer and winter rush.
Yes, most insulation projects in Greenbelt require a building permit from the Prince George's County Department of Permitting, Inspections and Enforcement (DPIE), especially if it involves structural alterations or adding vapor barriers. Furthermore, Maryland's building codes adopt specific energy conservation standards (based on the IECC) that dictate minimum required R-values for different parts of your home. A reputable local contractor will handle this permitting process for you.
Always verify the contractor is licensed, insured, and has strong local references. Look for companies experienced with Maryland's climate challenges, such as managing attic moisture and providing proper ventilation to prevent mold. Check for affiliations with organizations like the Maryland Home Performance Contractors Association and ask if they conduct a pre-installation energy audit, which is often required to qualify for state and utility rebates.
In almost all cases, prioritize the attic, as it is the primary source of heat loss in winter and heat gain in summer. Greenbelt's many mid-century homes often have severely under-insulated attics. Sealing attic bypasses and air leaks before adding insulation is a critical step. After addressing the attic, consider wall insulation, especially if your home has hollow walls; a local professional can perform an infrared scan to identify specific deficiencies.