GreenGuard Certified Fiberglass Batt
Primary Contents: Silica sand, limestone, boron, recycled glass
Average Recycled Content Percentage: 40
Average Thermal Resistance (R-value per Inch of Thickness): 3.4
Average Price per Square Foot ($) : 0.50
Material Environmental Impact Score (1-10): 4

Average Eco-rating

Average Eco-rating: A product's balance between environmental and economic considerations. The product that has the highest Average Eco-rating is both environmentally preferred and cost-effective to purchase and own.
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Environmental Impact Rating: based on each insulating material's Consumption Rating (see below) and material environmental impact score (the embodied energy used to make the insulating material; the potential toxicity of the material; if the material contains recycled content and/or if it is derived from a rapidly renewable resource; and if the material can be recycled or effectively reused at the end of its useful life). The higher rating, the less-toxic and energy-intensive the material is to manufacture and dispose of; the less natural resources it requires to exist; and the more recyclable it is at the end of its life.
49
Consumption Rating: based on the material's average thermal resistance (R-value per inch of thickness). The higher the rating, the more efficient the material and the higher its R-value.
53
Toxicity Rating: based on whether the insulating material/technology contains toxins such as formaldehyde, which are hazardous to humans, and/or CFCs, which are harmful to the natural environment. The higher the rating, the less-toxic the insulating material.
50
Price Rating: based on each material’s average price per square foot at R-19, plus the cost of installation. The higher the rating, the better (lower) the price of the product.
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The higher the rating, the better.
SpecificationsReviewsRebatesEco-ratingsBuying GuideLEED ComplianceRecycle

Our Environmental Impact Rating for insulation is based on each insulating material's Consumption Rating (see below) and material environmental impact score (which takes into account the embodied energy used to make the insulating material; the potential toxicity of the material; if the material contains recycled content and/or if it is derived from a rapidly renewable resource; and if the material can be recycled or effectively reused at the end of its useful life).

The higher the Environmental Impact Rating, the less-toxic and energy-intensive the material is to manufacture and dispose of; the less natural resources it requires to exist; and the more recyclable it is at the end of its life.

Our Consumption Rating for insulation is based on the material's average thermal resistance (R-value per inch of thickness). R-value measures a material's thermal resistance; the higher the R-value, the better the material is at keeping hot air inside during the winter and cold air inside during the summer. The Consumption Rating also takes into consideration how the insulation is installed, or applied. Spray insulation when compared to batt insulation, is a more effective way of insulating because the spray is able to infiltrate into hard-to-reach crevices.

The higher the Consumption Rating, the more efficient the material and the higher its R-value.

Our Toxicity Rating for insulation is based on whether the insulating material/technology contains toxins such as formaldehyde, which are hazardous to humans, and/or CFCs, which are harmful to the natural environment. The higher the Toxicity Rating, the less-toxic the insulating material.

Our Price Rating for insulation is based on each material’s average price per square foot at R-19, plus the cost of installation. The higher the Price Rating, the better (lower) the price of the product.

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