Blow-In Insulation Calculator

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Material Properties

Comprehensive technical specifications for blow-in insulation materials.

  • Cellulose Properties
    • R-Value/inch: 3.2-3.8
    • Density: 2.2-3.0 lb/ft³
    • Settling: 15-20%
    • Fire Rating: Class 1
    • Moisture Content: <12%
    • Sound Rating: NRC 0.8-0.95
  • Fiberglass Properties
    • R-Value/inch: 2.2-2.7
    • Density: 0.5-1.0 lb/ft³
    • Settling: 2-4%
    • Fire Rating: Class A
    • Moisture Resistance: 99%
    • Sound Rating: NRC 0.75-0.85
  • Mineral Wool Specs
    • R-Value/inch: 3.0-3.3
    • Density: 1.7-2.2 lb/ft³
    • Settling: 1-3%
    • Fire Rating: Class A
    • Melting Point: >2000°F
    • Sound Rating: NRC 0.9-1.0

Installation Standards

Critical specifications for professional installation:

  • Coverage Requirements
    • Attic Depth: 10-24"
    • Wall Cavity: 3.5-5.5"
    • Density Check: 3 pts/1000ft²
    • Marker Height: 1 per 300ft²
    • Ventilation Ratio: 1:300
    • Baffles: 14.5-22.5"
  • Equipment Settings
    • Blowing Pressure: 2.5-3.5 psi
    • Feed Rate: 15-25 lb/min
    • Hose Length: 50-150 ft
    • Hose Diameter: 2.5-3"
    • Nozzle Type: Reducer
    • Air Lock Setting: 80%
  • Safety Protocols
    • PPE Rating: N95+
    • Light Level: 50 fc
    • Clearance: 3" from heat
    • Vapor Barrier: Class I
    • Fire Blocking: 10' max
    • Access Size: 16×24"

Performance Metrics

Key specifications for insulation effectiveness:

  • Thermal Performance
    • Heat Flow: 0.3-0.5 Btu/h·ft²
    • Thermal Mass: 0.17-0.26
    • Thermal Drift: <5%
    • Air Infiltration: <0.25 ACH
    • Thermal Bridging: 0.8
    • Energy Savings: 20-50%
  • Environmental Factors
    • Recycled Content: 80-85%
    • VOC Emissions: <0.5 g/L
    • GWP Impact: <1.5
    • Ozone Depletion: 0
    • Fungi Resistance: Level 3
    • Service Life: 20-30 yrs
  • Quality Metrics
    • Coverage Test: 1 per 5000ft²
    • Density Check: ±10%
    • Moisture Test: <25%
    • Infrared Scan: 98%
    • Air Leakage: <0.04 cfm/ft²
    • Quality Grade: Level 1