Why Avoiding Fiberglass & Spray Foam Insulation is Crucial

Dec 21, 2023General Contracting, Insulation, Remodeling, Sustainable Building

Creating a comfortable and energy-efficient home is a top priority for many homeowners. In this blog post, we dive into why steering clear of fiberglass insulation and spray foam—common choices in many homes—can contribute to a healthier living environment and cleaner air for you and your family.


The Downside of Fiberglass & Spray Foam Insulation:

Fiberglass insulation has long been popular due to its affordability and heat-reducing effectiveness. However, the health risks associated with this widely-used material make it imperative to explore alternative options.

Spray Foam insulation gained popularity due to its excellent insulation, air sealing, and versatility, providing effective solutions for energy efficiency and construction challenges. However, concerns about health, environmental impact, and cost have led to increased interest in alternative, healthier insulation materials

Health Risks of Fiberglass Insulation:

  1. Respiratory Discomfort and Irritation: Inhaling airborne glass fibers during installation or over time can cause irritation to the eyes, skin, and respiratory system, potentially leading to coughing, wheezing, and more severe conditions.
  2. Skin Irritation and Allergies: Direct contact with fiberglass can lead to skin irritation, redness, and itching, with the tiny glass fibers posing a risk of embedding in the skin.
  3. Potential Carcinogenic Concerns: While not conclusively proven, some studies suggest a potential link between long-term exposure to fiberglass and an increased risk of certain cancers.

Health Risks of Spray Foam Insulation:

  1. Toxic Chemical Composition: Many spray foam products contain isocyanates, chemicals known for respiratory and skin issues, emphasizing the importance of proper handling during installation.
  2. VOC Off-Gassing: Freshly installed spray foam can release volatile organic compounds (VOCs), contributing to indoor air pollution and potentially causing respiratory problems and other health issues.
  3. Environmental Impact: Certain spray foam insulation products may have environmental implications during production and disposal, making them non eco-friendly


Creating a healthy home environment involves informed choices about materials. While fiberglass insulation and spray foam provide insulation benefits, their potential health risks and environmental impact highlight the need for exploration of alternative options. As a homeowner, consider eco-friendly insulation alternatives that prioritize both your family’s well-being and the planet’s health.


Alternative Options:

There are several healthier alternatives to traditional fiberglass and spray foam insulation. These alternatives are in no particular order and are often chosen for their eco-friendly and non-toxic properties. Here are some options:

  • Cellulose Insulation:
    • Made from recycled paper or plant fibers.
    • Treated with flame-retardant materials for safety.
    • Effective in both walls and attics.
  • Cotton Insulation:
    • Made from recycled denim or cotton fibers.
    • Treated for fire resistance.
    • Non-irritating and does not release harmful chemicals.
  • Wool Insulation:
    • Made from sheep’s wool.
    • Naturally flame-resistant and has good insulation properties.
    • Biodegradable and sustainable.
  • Hemp Insulation:
    • Made from the fibers of the hemp plant.
    • Has good thermal and acoustic insulation properties.
    • Environmentally friendly and sustainable.
  •  Wood Fiber Insulation (Gutex):
    • Made of a natural material like wood
    • Wood fiberboard has good acoustic insulation properties, reducing sound transmission and improving overall comfort
    • Effective thermal insulation, helping to keep buildings warm in the winter and cool in the summer.
    • Panels are vapor-permeable and allow moisture to move through the material. This can help regulate indoor humidity levels and prevent issues like mold and mildew
    • Renewable and biodegradable
    • Panels are often treated for fire resistance, adding a layer of protection in case of a fire

Your pursuit of a well-insulated home doesn’t have to compromise health or environmental considerations. Make informed choices for a comfortable, energy-efficient, and toxin-free living space, enhancing your home’s sustainability and your family’s overall well-being.

If you have questions regarding what insulation is best for your home call the pros at Home Stewards. Join Home Stewards in this journey to make informed choices for a healthier and happier home this holiday season. 🌟🏠

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