Attic Insulation in Massachusetts

In MA homes, most heat loss escapes at the top of the house. Addressing the attic with air sealing first, then insulation, delivers the biggest comfort and efficiency gains.

• Existing attic top-up: target R-49 to R-60 where feasible
• Knee walls & hatches: insulate and weather-strip to reduce bypasses
• Bath/kitchen fans: seal and duct to exterior

We seal penetrations, top plates, chases, and can lights (as applicable) before adding insulation. This prevents warm, moist air from leaking into the attic and undermining performance.

• Blown-in cellulose for most open attics (high coverage, good density)
• Fiberglass where specified or to match existing systems
• Rigid foam for hatches and transition details

Material selection depends on existing conditions, code, and program requirements.

• Cleaner, more even temperatures room-to-room
• Less ice dam risk due to reduced heat escape
• Documented post-work results (blower-door when applicable)

• Clear access to attic hatch; remove fragile items from below
• Typical install: 1 day for most single-family homes
• We clean work areas and leave documentation of measures installed

Will this make rooms less drafty? Yes—air sealing combined with insulation reduces stack-effect drafts.

Do you cover recessed lights? We use code-compliant methods and only where fixtures allow.