Hearn Insulation & Improvement Co. in Baltimore: Full-Service Insulation and Home Upgrades for Older Row Houses

Hearn Insulation & Improvement Co. is a Baltimore-based contractor that specializes in insulation installation, air sealing, and weatherization work, with an emphasis on retrofitting the city's aging rowhouse stock. The company handles attic, basement, and wall cavity insulation in homes where standard energy upgrades are most cost-effective, and operates across Baltimore County and the surrounding region.

What Hearn Insulation & Improvement Co. actually does

Hearn focuses on insulation installation and complementary home efficiency work: attic insulation (fiberglass, cellulose, and spray foam), basement rim joist sealing, air sealing around windows and doors, and vapor barrier installation. The company also performs minor weatherization work like caulking and ductwork sealing. It does not handle new construction or large-scale commercial projects; the scope is residential retrofit, which means the team is accustomed to working inside occupied homes, managing dust and mess, and navigating the structural quirks of Baltimore's 1920s-1950s housing stock. This focus is meaningful because older rowhouses present different challenges than suburban colonials: narrower attic access, masonry walls, and irregular joist spacing require experience specific to the city's building patterns.

Services and pricing

Attic insulation (the most common job) typically runs between $1,200 and $3,500 for a rowhouse, depending on square footage and existing insulation depth. Basement rim joist sealing, a critical air-leakage fix in older homes, ranges from $600 to $1,500. Air sealing packages (caulking, weatherstripping, exhaust ductwork isolation) cost $400 to $1,000. Spray foam insulation for walls or rim joists is priced per board foot and usually falls between $1.50 and $3.50 per board foot, plus labor. Verify current pricing and obtain a free written estimate from the company directly, as material costs and labor rates shift seasonally.

How Hearn compares to other Baltimore-area insulation contractors

Hearn's main local competitors include Comfort Systems and Insulation Depot, both of which operate in the Baltimore metro area. Comfort Systems leans toward larger HVAC and insulation packages with a higher service overhead; expect to pay 15 to 20 percent more for similar attic work, but the company's forte is bundled efficiency audits and financing options. Insulation Depot targets DIY customers and offers lower upfront pricing but primarily supplies materials; if you want full installation by experienced crews familiar with rowhouse details, Hearn and Comfort Systems are the realistic choices. Choose Hearn if your home is a rowhouse built before 1960 and you want a contractor with repetitive experience in that segment; choose Comfort Systems if you need an energy audit, financing, or a broader home efficiency project that combines HVAC work with insulation.

Who Hearn suits and who it does not

Hearn is the right fit for Baltimore rowhouse owners planning attic or basement insulation, air sealing, or both. The company works well for homeowners in Federal Hill, Canton, Fells Point, Roland Park, and similar in-city neighborhoods where rowhouses dominate. It also serves suburban single-family homes in Baltimore County. The company does not suit new-construction projects, large commercial buildings, or homeowners who need emergency same-day service. It is not a full energy audit firm, so if you want a professional blower-door test and written energy-efficiency plan before deciding on insulation, you may need to hire an energy auditor separately or choose a contractor that bundles audits.

What the first visit involves

Hearn typically begins with a free in-home estimate. The crew walks the attic, basement, and rim joist areas, assesses existing insulation, checks for air leaks, and identifies any moisture or ventilation issues. They measure square footage, discuss R-value targets (attic insulation is usually R-38 to R-60 for Baltimore's climate zone), and explain material options. The estimate is written and includes labor, materials, and a timeline. Most jobs are scheduled 1 to 3 weeks out. Work generally takes one to three days depending on scope; attic insulation alone is often a single-day job.

Hours, location, and logistics

Hearn operates Monday through Friday, 8 a.m. to 5 p.m., and some Saturday appointments are available by request. The company is based in Baltimore and serves the city and surrounding counties; verify service-area boundaries when you call. Parking in rowhouse neighborhoods is street-only, which the crew accounts for. No special site prep is usually needed for attic work, though you should clear the attic of personal storage if possible.

Hearn Insulation & Improvement Co. fills a specific niche in Baltimore's retrofit market: experienced, local, and oriented toward the insulation problems that matter most to city homeowners. For a rowhouse without modern thermal control, it offers practical efficiency gains at competitive pricing.