Compare the highest-rated insulation professionals in Gaithersburg, Maryland. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, locally-focused branch of a national brand known for its eco-friendly approach and comprehensive service. They specialize in both residential and commercial insulation, offering free evaluations and emphasizing education on energy savings and material choices (like blown-in cellulose, fiberglass, and spray foam).
A family-owned and operated business with a strong reputation in the DC Metro area for attic-specific services. They are known for their expertise in solving complex attic ventilation and insulation problems and for their knowledge of local building codes and energy rebates.
This company takes a holistic "house-as-a-system" approach, starting with advanced energy audits to diagnose the root causes of comfort and efficiency issues. They are a Building Performance Institute (BPI) certified company, which signifies a high level of expertise in building science and air sealing.
The insulation market in Gaithersburg, MD, is competitive and service-rich, driven by the city's mix of older homes needing upgrades and new construction adhering to modern energy codes. The overall quality of providers is high, with several companies holding specialized certifications like BPI. Homeowners are increasingly aware of the benefits of air sealing in conjunction with insulation, a service now commonly offered by top-tier contractors. Competition is strong, which benefits consumers through competitive pricing and a focus on customer service. Typical pricing varies significantly based on the project scope and materials. For a standard attic blown-in insulation job, homeowners can expect to pay between $1,500 and $3,500. Spray foam insulation is a premium option, often ranging from $3,000 to $7,000 or more for a full attic. The presence of utility rebates from companies like Pepco can substantially offset these costs, making energy efficiency upgrades a valuable investment for local residents.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Gaithersburg regulations and climate
Get answers to common questions about insulation services in Gaithersburg, Maryland.
For our humid summers and cold winters, blown-in cellulose or fiberglass is highly effective for attics, as it provides a dense, seamless barrier that resists air leakage and moisture. Spray foam is also excellent for sealing roof deck rafters, offering superior air sealing and a high R-value, which is crucial for managing both heat gain and loss. Maryland's building codes target specific R-values (e.g., R-49 for attic floors), so a professional assessment will ensure your insulation meets these local performance standards.
Costs vary based on material, existing insulation, and attic size, but for a standard 1,500 sq ft attic, adding blown-in insulation typically ranges from $1,500 to $3,500. Regional material and labor rates influence this, and spray foam will be significantly more. Many Gaithersburg homeowners qualify for rebates through programs like the Maryland Home Energy Loan Program (MHELP) or utility incentives from Pepco, which can offset 10-30% of the project cost.
Fall and early spring are ideal, as moderate temperatures allow for a thorough installation without extreme attic heat or winter cold hindering the work. Scheduling during these shoulder seasons also ensures your home is prepared for peak summer cooling and winter heating demands. However, professional installers work year-round; the key is to book in advance, as these are the busiest seasons for local insulation contractors.
For standard retrofit insulation jobs replacing like-for-like material, a permit is often not required. However, if the project involves structural changes, new construction, or altering ventilation (critical in Maryland's climate to prevent moisture issues), a permit from the City of Gaithersburg's Department of Housing and Community Development may be necessary. A reputable local contractor will know and handle all applicable Montgomery County and Maryland building code requirements.
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 achieving proper air sealing. Check for certifications from manufacturers (Owens Corning, Johns Manville) and industry bodies (BBB of Greater Maryland), and ensure they provide a detailed written estimate that includes the R-value, material specifications, and labor warranty.