What is Cellulose Insulation?

What is Cellulose Insulation?

Cellulose insulation is an eco-friendly insulation material made primarily from recycled newspaper and other paper products. Treated with fire-retardant chemicals, cellulose insulation provides excellent thermal performance while being one of the most environmentally sustainable insulation options available.

Key Benefits of Cellulose Insulation

• Environmentally Friendly: Made from 75-85% recycled paper content
• Fire Resistant: Treated with borates for fire and pest resistance
• Superior Air Sealing: Conforms to irregular spaces better than rigid materials
• Cost-Effective: Often less expensive than other insulation types

How Cellulose Insulation is Made

Cellulose insulation is manufactured by grinding recycled paper into small particles and treating them with borate-based chemicals. These chemicals provide fire retardancy, mold resistance, and pest deterrence. The result is a loose-fill insulation material that can be blown into attics, walls, and other cavities.

Installation Methods

Cellulose insulation can be installed using several methods:

• Dry Blown: The most common method for attics and enclosed walls
• Dense Pack: Higher density installation for walls and floors
• Wet Spray: Mixed with water for new construction applications

Performance Characteristics

Best Applications

Cellulose insulation works best in attics, enclosed wall cavities, and floors. It's particularly effective in retrofitting older homes where access to wall cavities is limited. The material's ability to conform to irregular shapes makes it ideal for areas with wiring, plumbing, or other obstructions.

Considerations

While cellulose is an excellent insulation choice, proper installation is crucial. The material can settle over time if not installed at the correct density, and moisture exposure should be avoided. Professional installation ensures optimal performance and longevity.