Sustainability
Naturally Sustainable, from Farm to Home
Wool is a renewable, naturally sourced fiber that supports healthier homes while helping reduce reliance on synthetic building materials. From the pasture where it begins to the spaces where it's installed, every step of the journey reflects Havelock's commitment to transparency, performance, and thoughtful manufacturing.
We're proud of the environmental story behind our products, and we're committed to backing our sustainability claims with science, third-party certifications, and measurable data.
Sustainability by the Numbers
The Wool Lifecycle: A Renewable Material with a Remarkable Story
Unlike many insulation materials that begin with petroleum or energy-intensive manufacturing processes, Havelock Wool starts with one of nature's most remarkable performance fibers.
Each year, sheep naturally grow a new fleece that can be shorn without harming the animal. That wool is then cleaned, processed, and transformed into high-performance insulation, air filtration media, and acoustic products designed to serve homes and buildings for decades.
Throughout its lifecycle, wool continues delivering benefits—from thermal insulation and indoor air quality improvements to moisture management and acoustic performance.
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Sheep grazing on natural pasture (carbon capture in grass and soil)
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Annual shearing with no harm to the animal
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Mechanical processing with no chlorine or harsh chemical treatments
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Low-energy manufacturing into finished Havelock products
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Installation requiring no special PPE or respirators
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End of life: naturally returns nutrients to the soil
The Carbon Story
Looking Beyond Operational Energy
When evaluating sustainable insulation, it's important to consider more than energy efficiency alone.
A product's environmental impact begins long before it's installed. Raw material sourcing, manufacturing, transportation, service life, and end-of-life all contribute to its overall carbon footprint.
Natural wool is unique because it stores carbon captured during the sheep's lifetime within the fiber itself, making it part of a broader carbon cycle rather than a petroleum-based manufacturing process.
Supply Chain Transparency
Knowing Where Your Materials Come From
Healthy homes begin with responsibly sourced materials.
Havelock Wool sources sheep wool from New Zealand, where sheep are shorn annually as part of routine animal care. The wool is then transported to Havelock's processing and manufacturing facilities, where it is transformed into finished products without chlorine bleaching or other harsh chemical treatments.
Transparency is an important part of sustainability, which is why we're committed to sharing information about our sourcing, manufacturing, and environmental practices.
Third-Party Certifications
Sustainability You Can Verify
Independent certifications help architects, builders, homeowners, and commercial specifiers evaluate products using consistent standards.
Havelock Wool products are supported by certifications that promote ingredient transparency, environmental responsibility, and healthier building practices.
DECLARE
Provides ingredient-level transparency, helping designers understand exactly what's inside a product and supporting healthier material selection.
Health Product Declaration (HPD)
Documents product ingredients and associated health information to support informed specification decisions.
Environmental Product Declaration (EPD)
Provides independently verified environmental impact data across a product's lifecycle, including embodied carbon and resource use.
LEED
Supports green building projects pursuing LEED certification through material transparency and environmental performance.
USGBC
Demonstrates alignment with broader sustainable building initiatives promoted by the U.S. Green Building Council.
How Does Wool Compare?
Every insulation material involves tradeoffs.
Some prioritize recycled content. Others prioritize R-value or installation speed. Increasingly, builders and homeowners are also evaluating embodied carbon, chemical content, indoor air quality, durability, and end-of-life environmental impact.
Natural sheep wool insulation offers a unique combination of thermal performance, moisture management, soundproofing, and low-emission performance while relying on a renewable resource rather than petroleum-based feedstocks.
| Material | Air Filtration | Moisture Management | Insulation Performance | Sound Absorption | Sustainability | Easy Installation |
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| Havelock Wool | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Fiberglass | ★ | ★ | ★ | ★★ | ★ | ★ |
| Mineral Wool | ★ | ★★★ | ★★ | ★★ | ★ | ★★ |
| Foam | ★ | ★ | ★★★ | ★★ | ★ | ★ |
| Thinsulate | ★ | ★★ | ★★★ | ★★★ | ★ | ★★★ |
Environmental Product Declaration
Download the EPD
For architects, engineers, contractors, and commercial project teams, the Environmental Product Declaration (EPD) provides independently verified information about the environmental impacts of Havelock Wool products throughout their lifecycle.
This document is an essential resource for LEED projects, sustainable building certifications, and product specification.
Frequently Asked Questions
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The answer depends on how sustainability is measured. Factors such as embodied carbon, renewable content, durability, indoor air quality, energy efficiency, and end-of-life disposal all contribute to a material's overall environmental impact. Comparing Environmental Product Declarations (EPDs) is one of the best ways to evaluate insulation products objectively.
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Wool is a renewable resource that regrows annually and requires relatively little processing compared to many synthetic insulation materials. Its natural properties also support energy efficiency, moisture management, and healthier indoor air quality.
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The carbon footprint of wool insulation depends on sourcing, transportation, manufacturing, and installation. Wool also stores carbon captured during the sheep's lifetime, making lifecycle analysis an important part of understanding its overall environmental impact.
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Yes. Wool is a natural protein fiber that can return nutrients to the soil at the end of its useful life under the right conditions, unlike many petroleum-based insulation products.
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Yes. Sheep naturally capture carbon through the grasses they consume, and that carbon remains stored within the wool fiber throughout its service life.
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Natural wool and fiberglass differ significantly in raw materials, manufacturing, embodied carbon, indoor air quality considerations, and end-of-life options. Environmental Product Declarations (EPDs) provide the most objective way to compare these products.
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An Environmental Product Declaration is an independently verified document that reports a product's environmental impacts throughout its lifecycle using internationally recognized standards.
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Embodied carbon varies by product and manufacturer. Reviewing third-party EPDs allows architects and builders to compare insulation materials using verified environmental data rather than marketing claims.
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Yes. Sheep naturally grow a new fleece each year, making wool a renewable resource that can be harvested repeatedly throughout the animal's life.
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Natural sheep wool is cleaned, processed, and manufactured into insulation using mechanical processes designed to preserve the fiber's natural performance. Overall environmental impact depends on sourcing, transportation, manufacturing, installation, and product lifespan.
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Unlike many synthetic insulation materials, natural wool can return to the environment under appropriate conditions. Its long service life means most installations perform for decades before end-of-life considerations become relevant.
Questions About Sustainability?
We're committed to being transparent about our products, our materials, and the science behind them.
If you'd like to learn more about Havelock Wool's environmental practices, certifications, sourcing, or product documentation, our team is happy to help.
