Cellulose Vs Fiberglass Insulation

Cellulose Vs Fiberglass Insulation: What’s Best for Your Home?

The insulation industry is booming. More homeowners and contractors are seeking ways to boost energy efficiency in homes. This rising demand puts two materials in the spotlight: cellulose and fiberglass. Each offers unique advantages, but which one should you pick? Let’s dive deeper into each type to help make that decision clearer.

Cellulose Insulation:

Made mostly from recycled paper, cellulose insulation undergoes treatment with fire-resistant chemicals. This makes it both eco-friendly and safe for homes.

Fiberglass Insulation:

Fiberglass insulation stands out because of its tiny glass fibers. It’s known not just for being non-flammable but also for its excellent ability to resist heat flow.

Cellulose Vs Fiberglass Insulation

Fiberglass insulation stands out because of its tiny glass fibers. It’s known not just for being non-flammable but also for its excellent ability to resist heat flow.

Key Differences Between Cellulose and Fiberglass Insulation

Installation Process:

  • Cellulose: Often blown-in, ensuring an even spread throughout the attic space.
  • Fiberglass: Available in batts or rolls, allowing easy layering within attic cavities.

Energy Efficiency:

  • Cellulose: Provides a higher R-value per inch, which means better thermal resistance. Therefore, homes insulated with cellulose insulation tend to have lower energy bills.
  • Fiberglass: Although it has a slightly lower R-value, when installed correctly, it can offer competitive energy savings.

Environmental Impact:

  • Cellulose: Being majorly composed of recycled content, it is often viewed as the more eco-friendly option.
  • Fiberglass: While it requires more energy in production, many brands are leaning towards using recycled glass content.

Durability and Lifespan:

  • Cellulose: Over time, it might settle, potentially reducing its effectiveness.
  • Fiberglass: Less prone to settling and can maintain its form and efficiency for longer durations.


  • Cellulose: Typically more affordable, especially given its high energy efficiency.
  • Fiberglass: Might have a higher upfront cost but can be cost-effective in the long run due to its durability.

Quick Comparison Between Cellulose and Fiberglass Insulation

Feature Cellulose Fiberglass
Installation Blown-in Batts/Rolls
R-value Higher Slightly Lower
Environmental More Eco-Friendly Variable
Durability Can Settle Less Likely to Settle
Cost Generally Lower Potentially Higher

Making the Right Choice

Selecting the appropriate insulation depends on a blend of factors: budgetary constraints, environmental beliefs, and energy efficiency aspirations. Whether you find yourself gravitating towards cellulose or fiberglass insulation, the key is in the installation. An expert touch can amplify the benefits manifold.

Experience the Attic Pro Difference

For residents of San Antonio pondering over insulation choices, the solution is closer than you think. At Attic Pro, we bring our rich experience to the table, guiding you through the maze of insulation choices. And it’s not just attic insulation San Antonio that we specialize in; our expertise extends to attic insulation Houston as well. Unsure about what your home needs? Schedule an appointment with Attic Pro. Our team of professionals is poised to ensure your home’s insulation is nothing short of perfect.

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