Compare the highest-rated insulation professionals in Fairfax, Virginia. All contractors are licensed, insured, and verified through our rigorous screening process.
Summit Insulation is a highly-rated, family-owned contractor specializing in comprehensive home performance solutions. They are known for their expertise in spray foam and their thorough approach that combines insulation with air sealing for maximum energy savings. They are a certified BPI (Building Performance Institute) contractor, which is a key indicator of expertise in the home performance industry.
Koala Insulation is part of a national brand with a strong local franchise known for excellent customer service and a wide range of insulation services. They emphasize eco-friendly options and offer free estimates. Their services are comprehensive, covering everything from attic and wall insulation to removal and replacement, making them a versatile choice for many projects.
This company focuses heavily on the energy efficiency and audit side of home performance, making them an excellent choice for homeowners looking to diagnose and solve specific energy loss issues. They are experts in navigating local utility rebates and incentives, particularly those from Dominion Energy, and provide a holistic service from audit to implementation.
** The insulation market in Fairfax, Virginia, is highly competitive and quality-oriented. The city and surrounding Northern Virginia region feature a large number of homes built from the 1960s to the 1980s, which are prime candidates for insulation upgrades to meet modern energy standards. The average quality of service providers is high, with many companies holding advanced certifications like BPI and RESNET, reflecting the educated and demanding homeowner base. Competition is strong, which benefits consumers through competitive pricing and a focus on customer service. Typical pricing varies significantly based on the project. A basic attic blow-in with cellulose can range from $1,500 to $3,500, while a full attic spray foam job can range from $4,500 to $8,000 or more. Wall insulation and complex air sealing projects are typically priced on a custom quote basis. Homeowners are strongly advised to leverage the free energy audits and estimates offered by most top-tier companies to understand available rebates from local utilities, which can substantially offset project costs.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Fairfax regulations and climate
Get answers to common questions about insulation services in Fairfax, Virginia.
For our humid subtropical climate with hot summers and cold winters, spray foam and blown-in cellulose are top choices. Closed-cell spray foam provides an excellent air and moisture barrier, crucial for managing Virginia's humidity, while dense-packed cellulose offers great thermal performance and is often more cost-effective. A professional assessment of your attic's airflow and existing conditions is key to selecting the right material and achieving the recommended R-38 to R-60 for our zone.
Costs vary based on material, home size, and existing conditions, but Fairfax homeowners can expect to pay between $1,500 and $4,500 for a standard attic insulation project. Blown-in cellulose is generally on the lower end, while spray foam commands a premium. It's important to get itemized quotes that include air sealing, as this is critical for performance and is required by Virginia's residential energy code (based on the IECC) for major retrofits.
Fall and early spring are ideal, as attic temperatures are more moderate, allowing for proper installation and material curing. However, insulation can be installed year-round. Scheduling in these off-peak seasons may also provide better availability from local contractors. Avoid the peak of summer if possible, as extreme attic heat can be hazardous for workers and affect some materials.
Always verify the contractor is licensed by the Virginia Department of Professional and Occupational Regulation (DPOR) as a Class A, B, or C contractor. Choose a company with specific experience in the insulation method you're considering and ask for proof of insurance. Look for local providers who understand Fairfax County's specific building codes and can advise on potential rebates from Dominion Energy or other state programs.
Yes, settling or moisture damage in wall insulation is common in older Fairfax homes. A simple check is an infrared thermal scan, which many local contractors offer as part of an energy audit. For homes without existing wall insulation, dense-pack cellulose or injection foam can be installed from the exterior or interior with minimal disruption. Addressing wall insulation is a major step in improving comfort, especially during our windy winter cold snaps.