Home Comparison image showing different insulation materials side by side_ fiberglass batts, blown-in cellulose, and spray foam application Comparison image showing different insulation materials side by side_ fiberglass batts, blown-in cellulose, and spray foam application

Comparison image showing different insulation materials side by side_ fiberglass batts, blown-in cellulose, and spray foam application

Comparison image showing different insulation materials side by side: fiberglass batts, blown-in cellulose, and spray foam application
Professional insulation contractor using a blowing machine to install blown-in cellulose insulation in a residential attic
Homeowner inspecting attic insulation depth with a ruler against joists, showing clearly visible measurement markings