25 Years
All Solutions

Blown In Fiberglass

Blown-in fiberglass is a loose-fill insulation designed to fill irregular spaces and gaps in attics and walls. Fire-resistant, mold-resistant, and efficiently installed using a pneumatic blowing machine.

Cellulose Blown-In Insulation in Attic
R-3.5
R-Value Per Inch
80%
Post-Consumer Recycled
No Demo
Works in Finished Walls

What It Is

Loose-fill cellulose insulation is blown into attics and wall cavities using a mechanical blower. Air Seal uses premium cellulose made from 80% post-consumer recycled newsprint, treated with boric acid to make it fire and mold resistant.

Its biggest advantage: it insulates finished spaces without demolition. Small holes are drilled, the cellulose is blown in, and the holes are patched ”” the wall stays intact.

Key Benefits

  • Insulates finished walls without tearing them down
  • Higher R-value than fiberglass (3.5 vs 2.2-2.7 per inch)
  • Fire and mold resistant ”” treated with boric acid
  • Most eco-friendly option: 80% recycled, zero harmful toxins

Where It's Applied

  • Attic floors ”” blown in as a thick layer
  • Existing finished wall cavities (no demo needed)
  • Over existing fiberglass insulation
  • New construction wall and floor cavities

Best For

Retrofitting existing homes and buildings without disrupting finished surfaces. The best value for attic insulation and the top eco-friendly choice for any project with sustainability goals.