Blown cellulose is the gold standard for attic floor insulation in Massachusetts. Made from 75–85% recycled paper with borate fire and pest treatment, it outperforms fiberglass batts in air resistance, conforms to irregular framing, and is among the most commonly funded items in the energy efficiency programs.
Cellulose achieves R-3.7 per inch — requiring 13–16 inches to meet the Massachusetts minimum of R-49 for attics. Dense-pack cellulose (at 3.5+ lb/ft³) is also the preferred material for insulating existing wall cavities without demolition in Boston-area renovation projects.
Meets MA attic code in 13–16 inches of material
The most sustainable mainstream insulation material available
Borate treatment provides superior fire resistance compared to untreated fiberglass
Borate treatment deters insects and rodents — important for older Boston-area homes
Consistently the most-funded insulation type in the Massachusetts program
Existing insulation depth and type measured. Target depth calculated to achieve R-49 or specified value.
Attic baffles confirmed or installed to maintain soffit ventilation.
Cellulose blown to specified depth. Depth rods installed every 300 sq ft for documentation.
Final depth photo documentation provided for energy incentive application.
Response within 2 hours. Project scope reviewed on every quote.
Get Free Estimate → 📞 857-214-2434Most MA homeowners qualify for incentives on qualifying insulation and air sealing projects — amount depends on eligibilitys. We handle all paperwork.
Learn About Energy Efficiency →Free estimate. Project scope reviewed. Response within 2 hours, Mon–Fri.