Earthwool attic insulation is a type of insulation material designed for use in residential and commercial buildings, particularly in attics. It is manufactured by Knauf Insulation, a global company specializing in sustainable insulation solutions. Earthwool is made from glass mineral wool (fiberglass) and is known for its thermal and acoustic insulation properties, as well as its eco-friendly composition.
Key Features of Earthwool Attic Insulation:
- Material Composition:
- Earthwool is made from recycled glass (up to 80% in some cases) and natural raw materials, bonded using a bio-based technology called ECOSE. Unlike traditional fiberglass insulation, it avoids harmful chemicals like formaldehyde, phenols, or artificial binders, making it safer for indoor air quality and easier to handle.
- Thermal Performance:
- It provides excellent thermal resistance (measured as R-value), which helps keep homes warm in winter and cool in summer by reducing heat transfer through the attic. The specific R-value depends on the thickness and density of the insulation installed.
- Sound Insulation:
- Earthwool also dampens sound, making it effective for reducing noise from outside or between rooms when used in walls or ceilings.
- Ease of Installation:
- Available in batts (pre-cut panels) or rolls, Earthwool is lightweight, flexible, and easy to cut, allowing it to fit snugly into attic spaces, around joists, and in irregular areas. It’s designed to be less itchy and dusty compared to traditional fiberglass, improving comfort during installation.
- Sustainability:
- The use of recycled materials and the ECOSE binder reduces its environmental footprint. It’s marketed as a greener alternative to conventional insulation products.
- Fire Resistance:
- Being made from glass wool, Earthwool is non-combustible, adding a layer of fire safety to buildings.
Benefits for Attic Use
- Energy Efficiency: Attics are a major source of heat loss in homes. Properly installed Earthwool insulation can significantly lower energy bills by maintaining consistent indoor temperatures.
- Moisture Resistance: While not waterproof, it’s designed to resist mold growth when paired with proper ventilation in the attic.
- Longevity: It’s durable and doesn’t settle or degrade significantly over time when installed correctly.
Installation Tips
- Preparation: Ensure the attic is well-ventilated and free of leaks. Homeology Retrofit will look after this for you in your custom retrofit plan.
- Coverage: Aim for the recommended R-value for your climate zone (e.g., R-38 or higher in colder regions).
- Application: We lay batts or rolls between joists, avoiding compression, which reduces effectiveness. Cover with a vapor barrier if needed, depending on local building codes.
Earthwool is popular among homeowners and builders looking for a balance of performance, affordability, and environmental responsibility. If you’d like specifics on pricing, R-values for your area, or comparisons with other insulation types (like cellulose or spray foam), then call our expert team & start your retrofitting journey today.
