The Definitive Guide to Attic Insulation Types: What’s Best for Your Home?

Attic insulation is crucial for maintaining energy efficiency and temperature control in your home. There are several types of insulation commonly used in attics. Here are some of the most popular options:

1. Fiberglass Insulation:

Fiberglass insulation is one of the most widely used types of insulation. It consists of tiny glass fibers that trap air, providing effective thermal insulation. Fiberglass insulation is available in batts or rolls and can be installed between attic joists or in open attic spaces. It is relatively affordable, easy to install, and offers good resistance to fire.

2. Cellulose Insulation:

Cellulose insulation is made from recycled paper and treated with fire retardants. It is available in loose-fill form and can be blown into the attic using specialized equipment. Cellulose insulation is known for its excellent thermal performance and ability to reduce air infiltration. It is often preferred for its eco-friendliness and its ability to fill gaps and crevices.

3. Spray Foam Insulation:

Spray foam insulation is a versatile option that creates an airtight and moisture-resistant barrier. It is applied as a liquid that expands and hardens, providing excellent insulation and sealing properties. Spray foam insulation can be used in both open attics and enclosed spaces. It offers superior insulation performance and can help prevent air leakage and moisture problems.

4. Mineral Wool Insulation:

Mineral wool insulation, also known as rock wool or stone wool insulation, is made from volcanic rock or slag. It comes in batts or loose-fill form and provides excellent thermal and acoustic insulation. Mineral wool insulation is fire-resistant, moisture-resistant, and offers good sound absorption properties. It can be used in both framed and unframed attic spaces.

5. Reflective Insulation:

Reflective insulation consists of a layer of foil or reflective material that reflects radiant heat. It is often used in hot climates to reduce heat transfer into the attic. Reflective insulation is typically installed under the roof rafters or on the attic floor, with an air gap to enhance its effectiveness. It works by reflecting radiant heat away from the living space.

It’s important to consider factors such as climate, budget, and the condition of your attic when choosing insulation. Consulting with a professional insulation contractor can help you determine the most suitable insulation type and ensure proper installation for optimal energy efficiency and comfort in your attic.