Mineral architectural material for healthier buildings

Terrawell

A mineral architectural material designed to improve indoor environmental quality.

Architect-ready mineral material for interior walls.

Reduces VOCs, regulates humidity, and supports healthier buildings.

Designed for architectural specification

  • Reduces VOCs, including benzene — test data available
  • Natural humidity regulation for comfortable interiors
  • Non-combustible, fire-resistant mineral composition
  • Absorbs CO₂ through natural mineralization
  • Suitable for WELL, LEED, and BREEAM-aligned projects
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Certifications

Environmental Product Declaration

Registration No: SuMPO-EPD-2601-84-1

View EPD
Bright modern living room with natural daylight and clean mineral wall
Why Architects Choose Terrawell

Terrawell improves indoor air quality while meeting the performance demands of modern architecture.

Healthier Indoor Air

Terrawell helps reduce VOCs, including benzene, contributing to improved indoor air quality for residential and commercial spaces.

Humidity Balance

The mineral structure naturally regulates indoor humidity, helping maintain comfortable and balanced living environments.

Mineral Durability

Made from mineral materials, Terrawell offers long-term durability and fire resistance suitable for modern architectural applications.

Fire Resistance

Non-combustible mineral composition that improves safety and durability in architectural applications.

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Terrawell mineral surface texture
Material Story

Mineral science for architecture

Terrawell is a mineral-based architectural surface designed to improve indoor environments.

Developed through advanced mineral processing research in Japan, Terrawell's microporous structure helps adsorb VOCs — including benzene — from indoor air over time. It also moderates humidity, contributing to more stable and comfortable interior conditions. All performance claims are supported by independent test data available upon request.

Unlike conventional ceramic tiles, Terrawell is never fired — eliminating kiln emissions entirely and resulting in a fundamentally lower-carbon material.

As a specification-grade architectural material, Terrawell is available in custom sizes, finishes, and colors. It is suitable for walls, floors, and feature surfaces in residential, hospitality, healthcare, and commercial projects worldwide.

Architectural Surface Finishes

Mineral tactility,
designed for architecture

Terrawell's mineral surface is naturally matte with a quiet, architectural presence.

The mineral surface responds to changing light conditions throughout the day, revealing subtle variations in tone and texture.

  • Naturally matte mineral surface
  • Subtle texture variations
  • Available in natural mineral finish. A warm gold colorway is also available as a special option.
  • Suitable for walls and feature surfaces
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Mist finish Mist finish — example 2
MistFine mineral texture with natural micro-porosity, supporting Terrawell's air-quality performance.
109×109mm Thickness: 9mm
Ripple finish Ripple finish — example 2
RippleOrganic pattern inspired by natural mineral flows.
165×165mm Thickness: 12mm
Ridge finish Ridge finish — example 2
RidgeA textured surface with ridge-like stone pattern, offering a bold architectural presence.
200×75mm Thickness: 13mm
TerraTessera finish TerraTessera finish — example 2
TerraTesseraEach tile is split by hand from a mineral block, revealing a raw, fractured surface that is never repeated twice. The result is a material of quiet power — where the rough and the refined coexist, and the ancient craft of stone meets the clean lines of contemporary architecture.
250×100mm Thickness: 12mm
Bespoke Panels

Crafted for your space,
unique by nature

Terrawell tiles can be composed into bespoke wall panels, tailored to the scale and vision of your project. Each panel is a unique expression of mineral craft.

Custom panel compositions available upon request. Contact us to discuss your project.

Performance

Performance &
Verified Results

Terrawell is designed as a high-performance mineral building material with tested indoor air quality benefits.

VOC & Odor Reduction

  • Formaldehyde: ≥99% reduction within 2 hours
    Tested by BOKEN Quality Evaluation Institute
  • Benzene: 50 ppm → 6 ppm within 24 hours
    Tested by Osaka Institute of Technology
  • Ammonia: 128 ppm → below detection limit within 1 hour

CO₂ Absorption

  • 1.3 kg-CO₂/m² absorbed and permanently fixed through mineralization
  • 10.7 m² of Terrawell = annual CO₂ absorption of one Japanese cedar tree
  • Tested and quantified by Niterra Co., Ltd. (NGK Group)

Humidity Regulation

  • Moisture absorption/release: approx. 40–43 g/m²
  • Natural humidity buffering for comfortable and stable indoor environments

Fire Safety

  • Non-combustible certification: NM-5880
  • Certified by Minister of Land, Infrastructure, Transport and Tourism, Japan (December 2024)

All performance data tested by independent institutes in Japan. Data available upon request.

Unlike conventional building materials, Terrawell continues to absorb and permanently fix CO₂ from indoor air throughout its entire service life — making it one of the few building materials that actively improves its environmental footprint over time.

Manufacturing GWP 1.33 kg CO₂eq/kg EPD certified · SuMPO-EPD-2601-84-1
Post-installation CO₂ absorption 1.3 kg-CO₂/m² Confirmed by two independent institutions
Cedar tree equivalence 10.7 m² of Terrawell = annual CO₂ uptake of one Japanese cedar tree
Third-party verification BOKEN Quality Evaluation Institute & Niterra Co., Ltd. (NGK Group)
View EPD — SuMPO-EPD-2601-84-1

Need detailed test data for your project?

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Applications

Applications

Designed for the spaces where indoor air quality matters.

Modern residential living interior

Residential

Healthy living environments with natural materials.

Terrawell improves indoor air quality while adding a refined architectural texture.

Hotel lobby or lounge interior

Hospitality

Elegant interior finishes for hotels, lounges, and hospitality spaces where comfort and air quality matter.

Nursery / childcare facility — Terrawell panels installed in a pediatric care space, supporting clean air and a safe environment for children.

Healthcare

Ideal for clinics, nurseries, and healthcare facilities where odor control and humidity regulation contribute to better indoor environments.

Restaurant interior with Terrawell tiles

Restaurant

Artistic relief tiles bring sculptural beauty to restaurant corridors and dining spaces, enhancing the ambiance while improving indoor air quality.

Custom sizes and finishes available upon request.

Sustainability

Committed to responsible
building materials

Terrawell is developed with long-term environmental responsibility in mind — from material composition to end-of-life performance.

Mineral-Based, Low Emissions

Made from natural mineral compounds with no organic binders. Minimal VOC emissions during production and throughout service life.

Long Service Life

Durable mineral composition resists degradation, reducing replacement frequency and material waste across a building's lifecycle.

EPD Certified

Environmental Product Declaration issued under SuMPO, third-party verified by BOKEN Quality Evaluation Institute. GWP: 1.33 kg CO₂eq/kg. Valid until January 2031.

Green Building Alignment

Terrawell's documented IAQ and durability properties can support projects targeting LEED, BREEAM, WELL, and comparable certification frameworks.

Circular by Design

Terrawell accepts end-of-life materials from other industries and returns them as architectural surfaces — a material designed for circularity. Because Terrawell is never fired, materials can be reclaimed and reused, closing the loop on building material waste.

Certified EPD
Registration SuMPO-EPD-2601-84-1
GWP (Global Warming Potential) 1.33 kg CO₂eq/kg
Third-party Verification BOKEN Quality Evaluation Institute
Valid Until January 2031
View EPD
Registered Patent

Three registered patents covering the proprietary non-fired mineral formulation. Patent No. 7545781, 7366378, 7366379 (Japan Patent Office)

Kano Corporation is committed to reducing greenhouse gas emissions by 42% by 2030, validated by the Science Based Targets initiative.

Technical Information

Resources for Architects

Specification documents
for your project

All technical documents are available upon request. Contact us to receive the complete specification package for your project.

Technical Data Sheet

Primary product specifications: sizes, thickness, finish, fire rating, and IAQ properties.

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VOC & IAQ Test Reports

Independent test data on formaldehyde (≥99% reduction), benzene (50→6 ppm), ammonia, CO₂ absorption, and humidity regulation. Issued by BOKEN Quality Evaluation Institute, Osaka Institute of Technology, and Niterra Co., Ltd. (NGK Group).

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Installation Guide

Recommended installation methods, substrate requirements, and adhesive specifications for professional installers.

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Specification Sheet

Formatted specification text for NBS, Archispec, or project specification documents. Available in English.

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For a complete technical package including all documents, please contact us directly. Sample requests are also welcome.

Specifications

Technical Data

Material Mineral compound (proprietary formulation)
Standard Size 200 × 75 mm, 109 × 109 mm, 165 × 165 mm, 250 × 100 mm
Custom sizes available upon request
Thickness 9 – 13 mm (varies by product line)
Finish Matte mineral surface, various textures
Color Natural mineral finish. A warm gold colorway is also available as a special option.
Fire Safety Non-combustible — Certification NM-5880
Certified by Minister of Land, Infrastructure, Transport and Tourism, Japan (December 2024)
VOC Reduction Formaldehyde ≥99% (2 h) · Benzene 50→6 ppm (24 h) · Ammonia to below detection (1 h)
CO₂ Absorption 1.3 kg-CO₂/m² — permanently fixed through mineralization
Tested by Niterra Co., Ltd. (NGK Group)
Humidity Regulation Moisture absorption/release: approx. 40–43 g/m²
Installation Standard adhesive mortar; professional installation recommended
Origin Manufactured in Japan

Specifications may vary by product line. Detailed technical sheets and test reports are available upon request. Performance data based on internal testing — results may vary depending on installation environment.

Technical Information Package

Our technical information package includes product data sheets, installation guidelines, available sizes and finishes, and reference test data for IAQ performance.

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PDF · Available in English
For samples or custom specifications, please contact us directly.

Developed in Japan

Developed and manufactured in Japan

Terrawell is developed and manufactured in Japan by Kano Corporation, a company with deep roots in construction materials and tile technology. Each product reflects careful material research and precision manufacturing.

As interest in indoor air quality grows globally, we are actively seeking partnership opportunities with architects, developers, and distributors outside Japan. Our team is available to discuss project requirements and provide technical support.

1

Proprietary Mineral Technology

Developed through years of research into mineral adsorption and building material performance.

2

Consistent Manufacturing Quality

Manufactured under strict Japanese quality standards for dimensional accuracy and surface finish.

3

Custom Project Support

We work directly with architects and specifiers to accommodate custom sizes, colors, and finishes.

4

International Availability

Samples, technical sheets, and product inquiries are available for projects worldwide.

News

Latest Updates

EPD Certification Received

Terrawell receives Environmental Product Declaration certification (SuMPO-EPD-2601-84-1), third-party verified by BOKEN Quality Evaluation Institute. Valid until January 2031.

Contact

Get in touch

Interested in Terrawell for your project? We welcome inquiries from architects, developers, and distributors worldwide.

Kano Corporation

ykano@kano.co.jp

1647-3 Kasahara, Tajimi, Gifu 507-0901, Japan
TEL: +81-572-43-3161

terrawell.tech

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