無添加住宅 List of Products and Services

The combination of design power and additive-free indoor spaces is a better combination. This is a page for original building materials aimed at construction companies that build houses. It will become an additional strength in your product lineup. The additive-free house was developed by a plant enthusiast president who delved into what it takes for customers with chemical sensitivity to be able to live in such homes. If all natural material houses and healthy houses were unattractive, we wouldn't have been able to get this far. From now on, I believe that combinations like airtightness and insulation performance x additive-free houses, or non-residential x additive-free houses will be even better. Of course, design x airtightness and insulation performance x additive-free houses is the strongest combination. For more details, please download the materials.

• others
• Systems Architecture
• Plaster wall

This document is a collection of case studies summarizing examples of niche construction in additive-free homes. It features high-quality construction examples gathered from 170 agencies nationwide. Kitchens, toilets, washrooms, and bathrooms are essential for daily living. The "niche" summarized in this case study is not something that is absolutely necessary for a home! However, depending on the installation location and design, it can become a convenient point for daily life, an eye-catching feature for guests, or a charming aspect that adds a "cute" feeling to everyday living. To create a niche, it is recommended to use an interior wall rather than a wall facing the exterior. Please feel free to inquire for more details. * We are currently recruiting agencies nationwide! Please contact us for more information. * For more details, please refer to the PDF document or feel free to reach out to us.

• Interior wall decoration
• Decoration and performance supplies

This document is a design case study of "Mutenka Housing," developed by Mutenka Jutaku Co., Ltd. "Mutenka Housing" offers not only a healthy living environment but also comfort in both summer and winter, enjoyment of aging changes, and the value of materials and designs that can only be found in authentic products. We have a dealership system in place. This was initiated to establish a framework for building "Mutenka Housing" nationwide, and unlike what is commonly referred to as a franchise, it features a high degree of freedom for each dealership. [Contents (excerpt)] ■Appearance ■Kitchen ■Dining ■Niche ■Living *We are currently recruiting nationwide dealerships! Please contact us for more details. *For more information, please refer to the PDF document or feel free to reach out to us.

• Renovation Design

In our additive-free homes, we handle a type of limestone known as "coral stone," which excels in both design and functionality. Coral stone is a limestone that contains fossils of coral and shells. It is used in a wide range of applications, including interior and exterior walls, not only for its aesthetic appeal but also for its functional properties. 【Features】 ■ Deodorizing Function The surface of coral stone has many holes, which provides excellent deodorizing effects. ■ Moisture Absorption Function As a type of limestone, coral stone has very high moisture absorption capabilities. Limestone is so effective at absorbing moisture that it is used as a drying agent for food. ■ Durability Vinyl wallpaper, which is commonly used for interior walls, tends to yellow over time or peel at the edges, but coral stone is resistant to deterioration and can maintain its beautiful condition for a long time. As of June 2021, our shipping record amounts to approximately 47,000 square meters in total, which is nearly the same volume as one Tokyo Dome. *For reference, the Tokyo Dome has a building area of 46,755 square meters. *For more details, please download the PDF or feel free to contact us.

• Interior and exterior stone materials

This document is a collection of case studies for "Additive-Free Housing Renovations and Renovations" handled by Additive-Free Housing Co., Ltd. The most important aspect we focus on in renovations is "the health of our customers." Additionally, highly designed spaces make daily life enjoyable. We propose comfortable spaces that can be enjoyed through the five senses and offer renovations that minimize maintenance costs. We have included case photos of renovations and renovations for single-family homes, condominiums, and specific areas. [Contents] ■ Single-family homes ■ Condominiums ■ Specific areas *For more details, please refer to the PDF document or feel free to contact us.

• Renovation Design

This document is a collection of case studies showcasing the construction examples of the "Original Custom Kitchen" from Mutenka Jutaku Co., Ltd. The original kitchen made of the natural material "wood," perfect for a natural lifestyle, shines vibrantly when maintained, and its scratches and stains develop a rich character over time. We feature various custom kitchens made from different types of wood, including space-saving "external L-shaped" designs that can be utilized by multiple people. [Contents Included] ■ External L-shaped ■ Island type ■ Counter-combined type ■ L-shaped ■ I-shaped ■ Mini * We are currently recruiting construction agents! * For more details, please refer to the PDF document or feel free to contact us.

• Kitchen unit

The original plaster of the additive-free house has been measured using an actual building to demonstrate its "energy-saving performance," which reduces air conditioning power consumption in both summer and winter. As a result of the verification, it has been proven that the interior with the original plaster has about a 16% energy-saving effect compared to interiors finished with typical vinyl wallpaper. Tobishima Construction Co., Ltd., the agency for additive-free houses, conducted the measurements using their company housing. Two rooms of the same type of single dormitory were measured simultaneously. We hope that the original plaster, which serves as a wall material for energy-saving heating and cooling, will become more widespread in the world. 【Other Features and Benefits】 ■ Adsorbs and decomposes chemical substances ■ Easy to maintain ■ Fire-resistant ■ Long-lasting ■ Visually appealing 　And more There are some aspects that could be considered disadvantages, so please feel free to ask our staff. We believe you will feel the benefits sufficiently. *For details, please download the PDF and take a look. *We are currently recruiting nationwide agents! Please contact us for more information.

• Plaster wall

"I liked the texture." "I liked it because it regulates humidity." "It's good that it's safe." This original plaster is chosen for various benefits, but there are also advantages that you won't realize until you've lived with it, such as "it's easy to maintain." Since plaster is white, some people say, "It must be hard to take care of," but most people confuse it with the "white" of vinyl wallpaper or paint. The "white" of the original plaster comes from inorganic "limestone," so it doesn't discolor due to UV degradation. Most people who actually live with it find that they can handle issues in certain areas with regular commercial products. Please feel free to contact us. [Other Features and Benefits] ■ Adsorbs and decomposes chemical substances ■ Easy to maintain ■ Fire-resistant ■ Reduces air conditioning power consumption by 16% And more There are some aspects that could be considered disadvantages, so please feel free to ask our staff. We believe you will feel the benefits sufficiently. *For details, please download the PDF. *We are currently seeking nationwide distributors! Please contact us for more information.

• Plaster wall
• Plaster wall

The "product image" shows data indicating that the original plaster absorbs and decomposes chemical substances. Testing commissioned by: Boken Environmental Analysis Testing Center (Foundation Japan Spinning Inspection Association) Please feel free to email us if you have any questions about interpreting the graph. Test data for ethylbenzene and styrene is also available. The white luster of plaster walls, which cannot be expressed with other materials, occurs as the plaster chemically reacts with carbon dioxide in the air, gradually hardening into crystals of calcium carbonate with the same composition as the original limestone. Plaster walls have a unique natural texture and feel. Even with aging, they create an atmosphere that never becomes tiresome. 【Other Features and Benefits】 ■ Absorbs and decomposes chemical substances ■ Easy to maintain ■ Fire-resistant ■ Pleasant feel, white luster, and texture ■ Reduces air conditioning power consumption by 16% 　And many more It is often said by contractors who have adopted it that they can never go back to wallpaper. Depending on the perspective, there may be aspects that correspond to disadvantages, so please feel free to ask our staff. We believe you will feel the benefits sufficiently. *For details, please download the PDF and take a look. *We are currently recruiting nationwide agents! Please contact us for more information.

• Plaster wall

The "product image" is a graph comparing the moisture absorption and desorption rates of original plaster and vinyl wallpaper. Testing organization: Japan Architectural Comprehensive Testing Institute. It is often said, "Even on humid days outside, it feels dry when you enter the house." Plaster is a fine porous material, which gives it excellent moisture absorption and desorption properties. By appropriately regulating the humidity in the space, it suppresses condensation and maintains the durability of the building. Additionally, in the humid summer, it absorbs moisture, and in the dry winter, it releases humidity, creating a comfortable indoor environment. (Excessive humidification or heating beyond the performance limits can cause condensation. Please be cautious.) 【Other Features and Benefits】 ■ Easy maintenance ■ Pleasant feel, white luster, and texture ■ Reduces air conditioning power consumption by 16% ■ Kills human coronavirus in 5 minutes It is often said by construction companies that have introduced additive-free housing that they can never go back to wallpaper. There are some aspects that may correspond to disadvantages, so please feel free to ask our staff. We believe you will feel sufficient benefits. *For more details, please download the PDF. *We are currently recruiting nationwide agents! Please contact us for more information.

• Plaster wall
• Plaster wall

In this inspection, we conducted tests by applying human coronavirus (HCoV-229E) to our original additive-free plaster. The results showed that the virus was completely inactivated five minutes after application. (This test used "human coronavirus," which has a 90% genetic match with the novel coronavirus. Furthermore, according to the National Institute of Allergy and Infectious Diseases, coronaviruses can survive for more than three days when attached to plastic or stainless steel. Even considering this perspective, it has been confirmed that our original additive-free plaster possesses beneficial properties. *While our plaster has the ability to inactivate viruses, it does not guarantee infection prevention. The Biomedical Science Research Association was established in 1987 by researchers from a research institution under the Ministry of Health, with a focus on utilizing research personnel, linking basic and applied research in preventive medicine, and international cooperation. Currently, it aims to support industry, government, academia, and the public, and is engaged in social support and awareness activities in the fields of infectious diseases and public health, both domestically and internationally, based on preventive medicine and biosafety technology (safety management and operation of pathogens, etc.).

• Plaster wall
• Plaster wall
• Natural paints (water-based, ink, etc.)

The original "shikkui" from Additive-Free Housing is a wall material that inactivates 99.9% of influenza viruses. It uses high-quality, highly white Kochi-produced limestone without the use of chemical substances, and has undergone unique improvements, making it an excellent choice for durability, safety, and design. We would like to briefly introduce a case study of a "pharmacy" that used this wall material. [Client's Feedback] "By using the original additive-free shikkui, there is no medicinal smell in the pharmacy." *For more details, please refer to the PDF materials or feel free to contact us. *We are currently seeking nationwide distributors! Please feel free to reach out.

• Interior and exterior wall coating materials

The original "shikkui" (lime plaster) of additive-free houses is a wall material that inactivates 99.9% of influenza viruses. It uses high-quality, highly white Kochi-produced limestone without any chemical substances, and has been uniquely improved to provide excellent durability, safety, and aesthetic appeal. Here, we briefly introduce a case study of "Dream Nursery," located in Osaka Prefecture, which uses this wall material. [Voice of the Client] "We do not use any materials that are harmful to the body. In an environment that utilizes natural materials that are safe enough to be put in the mouth, the children are able to play freely." *For more details, please refer to the PDF document or feel free to contact us. *We are currently seeking national distributors! Please feel free to reach out.

• Interior and exterior wall coating materials

The original "shikkui" (lime plaster) of additive-free housing is a wall material that inactivates 99.9% of influenza viruses. It uses high-quality, highly white Kochi-produced limestone without the use of chemical substances, and has been uniquely improved to provide excellent durability, safety, and aesthetic appeal. Here, we briefly introduce a case study of a "nursing home" located in Taisho Ward, Osaka City, that uses this wall material. [Client's Feedback] "There is no unique smell typical of elderly facilities, which has been well received by both staff and users, as well as their families. It has also been featured in specialized magazines." *For more details, please refer to the PDF materials or feel free to contact us.

• Interior and exterior wall coating materials

The original "shikkui" (lime plaster) of additive-free housing is a wall material that inactivates 99.9% of influenza viruses. It uses high-quality, highly white Kochi-produced limestone without the use of chemical substances, and has undergone unique improvements, making it an excellent choice for durability, safety, and design. We would like to briefly introduce some examples of "clinics, hospitals, and dental offices" that have used this wall material. [Feedback from clients] "There is no unique smell of hospitals or dental offices, which has received positive feedback. People have said, 'It feels more comfortable here than other clinics.'" *For more details, please refer to the PDF materials or feel free to contact us. *We are currently seeking nationwide distributors! Please feel free to reach out.

• Interior and exterior wall coating materials

The original "shikkui" (lime plaster) of our additive-free house is a wall material that inactivates 99.9% of influenza viruses. Using high-quality, high-white limestone from Kochi, and without the use of chemical substances, it is a shikkui that has undergone unique improvements, offering excellent durability, safety, and aesthetic appeal. We would like to briefly introduce some examples of "office interior design and renovation" using this wall material. [Client's Voice] "Our customers and partner contractors have praised it as stylish. The gentle color of the shikkui softens the atmosphere within the company." *For more details, please refer to the PDF materials or feel free to contact us. *We are currently seeking nationwide distributors! Please feel free to reach out.

• Interior and exterior wall coating materials

In this inspection, we conducted tests by applying human coronavirus (HCoV-229E) to our original additive-free plaster. The results showed that the human coronavirus was completely inactivated five minutes after application. (This test used "human coronavirus," which has 90% genetic similarity to the novel coronavirus. Additionally, the test was conducted using "test pieces" and does not indicate the performance of the building.) Furthermore, according to the National Institute of Allergy and Infectious Diseases in the United States, when human coronavirus adheres to plastic or stainless steel, its survival period is said to be more than three days. Taking this perspective into account, it was confirmed that our original additive-free plaster possesses beneficial properties. *While our plaster has the ability to inactivate human coronavirus, it does not guarantee infection prevention.

• Plaster wall
• Plaster wall
• Natural paints (water-based, ink, etc.)

We provide support from various aspects. ◯ Provision of materials and equipment ◯ Technical guidance and support ◯ Various training programs ◯ Sales promotion support ◯ Technical guidance and support Our instructors provide guidance on construction methods unique to additive-free homes, as well as detailed advice on construction sites. We also hold study sessions in various forms, such as lime plaster workshops, to create opportunities for skill improvement. ◯ Various training programs We offer training on the establishment of the renovation business itself, including manuals that support pack products, estimation materials, and sales methods. This includes the unique "strengths" of additive-free home renovations and easy-to-understand pack products for customers. The pack products are designed to be immediately useful in practice. We aim to streamline the "effort" and "time" through our in-house development. No annual fees A starter kit fee of 300,000 yen upon joining A total of 600,000 yen (excluding tax) for manuals and 14 hours of training at 300,000 yen each A security deposit is required as it involves our material sales (refundable upon cancellation). *For more details, please contact us or download the catalog. Experiencing "indoor air" is the best way to understand it. We hope you will visit us to experience our models.

• Plaster wall
• Interior/Interior Doors
• others

Overwhelming differentiation can be achieved in the overwhelmingly clean indoor spaces of additive-free homes, which utilize natural materials such as original plaster, solid wood, and rice glue to visualize "the air." In additive-free homes, we have primarily operated an agency system in the new construction sector, but starting in April 2020, we launched a renovation business and began recruiting additive-free home renovation agents as a separate channel from the new construction sector. No annual fees Starter kit fee of 300,000 yen upon joining A manual and 14 hours of training for 300,000 yen, totaling 600,000 yen (excluding tax) A security deposit is required as our material sales are involved (refundable upon cancellation) The manual and training cover the establishment of the renovation business itself, support for packaged products, cost estimation materials, sales methods, and more. It includes the unique "strengths" of additive-free home renovations and easy-to-understand packaged products for customers. The packaged products are designed to be immediately useful in practice. We aim to streamline "effort" and "time" through our in-house development. *For more details, please contact us or download the catalog.

• Plaster wall
• Interior/Interior Doors
• others

No annual fees or anything like that. A starter kit costs 300,000 yen upon joining. The manual and training for 14 hours total 600,000 yen (excluding tax). A security deposit is required as it involves the sale of our materials (refundable upon cancellation). For those who find building a new additive-free house challenging, but are considering renovations... Please feel free to contact us. An example of what is included in the renovation pack in the manual: - Replacement with an original additive-free kitchen - Replacement with an original additive-free washbasin - Renovation to additive-free specifications for Western and Japanese-style rooms - Replacement of gutters and renovation of the exterior to additive-free specifications (Carbonized cork wall cover method: overlay) - Reconstruction of the living dining area and kitchen - Combining two rooms for renovation, etc. - Renovation and reconstruction of washrooms, toilets, and bathrooms, with currently 45 patterns planned to increase in the future. *For more details, please contact us or download the catalog. Experiencing "indoor air" is the best way to understand it. We hope you will visit to experience our models. 【Additive-Free House Products】 ○ Lime (shikkui) walls ○ Flooring ○ Kitchen ○ Sanitary ware ○ Fixtures and furniture ○ Natural stone and tiles ○ Stone roofs

• Plaster wall
• Interior/Interior Doors
• others

In the tests, viruses were attached to our original plaster for examination. The viruses became inactivated after attachment, and their infectivity rapidly declined. The recovered viruses were reduced by 99.967%, to less than 0.033%. After 15 minutes of testing, the results were even more pronounced, with recovered viruses being less than 0.000588%, resulting in a 99.999% reduction. It cannot be proven whether the viruses were killed by the detoxifying action of the plaster or simply adsorbed onto it, but the experiment confirmed the undeniable fact that the viruses were inactivated and their infectivity was reduced. This plaster is made from high-quality, high-white limestone sourced from Kochi, without the use of chemical substances, and has undergone unique improvements, making it exceptional in durability, safety, and design. 【Features】 ■ Suppresses condensation ■ Adsorbs and decomposes chemical substances ■ Easy to maintain ■ High safety ■ Suppresses mold and mites ■ Fire-resistant ■ Pleasant feel, with a white luster and texture ■ Reduces air conditioning power consumption by 16% (compared to vinyl wallpaper) *For more details, please download the PDF. *We are currently seeking national distributors! Please contact us for more information.

• Interior and exterior wall coating materials
• Insulation work
• Interior coating materials

Condominium renovations have many structural constraints, such as the size of the space and the size of the windows, but it is precisely because of these constraints that we offer suggestions to turn disadvantages into advantages. We provide a range of options from partial renovations that utilize original natural materials to large-scale renovations. ● Examples of condominium renovation menus Plaster renovation Interior renovation Storage renovation Water area renovation Insulation renovation Full condominium renovation *For more details, please download the PDF or feel free to contact us.

• Plaster wall
• Interior/Interior Doors
• others

Since construction methods differ for each building, such as wooden frame construction, steel frame construction, and reinforced concrete construction, we will propose the optimal renovation while fully considering the characteristics of the structural framework. Using natural materials, we offer plans tailored to each customer's individual needs and lifestyle, ranging from large-scale comprehensive renovations to partial renovations of just one room, supporting the creation of your ideal home. ● Examples of single-family home renovation menu Lime plaster renovation Interior renovation Storage renovation Water area renovation Remodeling renovation Expansion and renovation Seismic renovation Insulation renovation Roof renovation Exterior renovation Full renovation of single-family homes *For more details, please download the PDF or feel free to contact us.

• Plaster wall
• Interior/Interior Doors
• others

High airtightness and high insulation homes are becoming widespread, and many energy-efficient houses are being built. In highly airtight homes, do you not feel that the air volatilized from petroleum products cannot be adequately addressed by 24-hour ventilation? In fact, there are papers that discuss this. Bad air tends to accumulate at the bottom when it volatilizes. We will share information about the recent situation of indoor air and the concept of additive-free homes only with those who have downloaded our materials and can speak directly. In particular, the recent situation regarding indoor air quality often surprises existing agents, who say, "I didn't know that" or "I'm glad I asked." If you are interested, please do not hesitate to reach out. We have 160 agents nationwide, but there are still areas that are not yet covered. □ For construction companies struggling with complaints → The approach of additive-free homes is key. □ For those who want to build honestly → This home is it. □ For those who want to have exciting meetings → Please check our case study collection. ◇ Existing agents are pleased that they don't have to lie.

• Plaster wall
• Interior/Interior Doors
• others

In recent times, natural materials have been gaining attention, and "shikkui" (a type of plaster) is one of the materials that is also being highlighted. However, many construction companies may have the following concerns: - A client asked, "What is shikkui?" - I actually don't know much about plastering... - I don't really understand the difference between diatomaceous earth and shikkui... "The Shikkui Textbook for Construction Companies" is a document that compiles and explains inquiries received from construction companies to our company. It is useful for those who want to learn about shikkui, and even those who are knowledgeable about it may find new insights. You can view the entire "Shikkui Textbook for Construction Companies" by downloading the PDF.

• Plaster wall
• others

High airtightness and high insulation homes are becoming widespread, and many energy-efficient houses are being built. In highly airtight homes, do you not feel that the air volatilized from petroleum products cannot be adequately addressed by 24-hour ventilation? In fact, there are papers discussing this issue. We will share recent information about indoor air and the philosophy behind additive-free homes only with those who have requested materials and can speak directly. In particular, the recent situation regarding indoor air quality often surprises existing agents, who say, "I didn't know that" and "I'm glad I heard it." If you are interested, please do not hesitate to reach out. We have 160 agents nationwide, but there are still areas that are not yet covered. □ For construction companies struggling with complaints → The approach of additive-free homes is the key. □ For those who want to build honest homes → This is the house for you. □ For those who want to have exciting meetings → Please check our construction case studies. ◇ Existing agents are pleased that they don't have to lie.

• Plaster wall
• Interior/Interior Doors
• others

Since its publication in May 2019, we have received positive responses from various places. "The Concept of Air in Additive-Free Homes ~AIR BOOK~" is a concise summary of the indoor air considerations, the details of our carefully selected building materials, the management system for these materials, and the measurement results of air and materials in collaboration with Ehime University. It aims to help readers re-recognize the importance of "indoor air" and to feel that if they choose safety, there is no option other than "additive-free homes." In addition to the above, this catalog includes: "Concept" "Carefully Selected Building Materials" "Safety" "Quantification of Air" "Customer Voices" *We are currently recruiting nationwide agents! Please contact us for more details.

• Plaster wall

"The Concept of Air in Additive-Free Homes ~AIR BOOK~" is a clear summary of the indoor air considerations, the details of carefully selected building materials, the management system for these materials, and the measurement results of air and materials in collaboration with Ehime University, as conceived by the Additive-Free Home Headquarters. It aims to help you re-recognize the importance of "indoor air" and conveys that if you choose safety, there is no option other than "Additive-Free Homes." *We are currently seeking national agents! Please contact us for more details.*

• Plaster wall

The story of how additive-free houses were created, based on the upbringing of developer Kenji Akita, has been turned into a manga. *Not available for sale in general bookstores. It consists of 167 pages and can be read in about 20 minutes. [Contents] ◯ What led to the creation of additive-free houses? ◯ Who is Kenji Akita? ★ For those who inquire using the form below, the first 10 people will receive a copy. The illustrations are by Mr. Hideki Akiyama. Mr. Akiyama previously serialized a manga titled "Kabin no Tsuma," which focused on his wife’s chemical sensitivity, in Shogakukan. "Kabin no Tsuma" is a full-fledged essay manga that has been featured in newspapers since its serialization. *If you would like the manga, please contact us through the inquiry form. *The downloadable version is a digest version of the beginning. *We are currently seeking national agents! For more details, please inquire.

• Plaster wall
• Plaster wall

Data was obtained at the Japan Building Disaster Prevention Association showing that chemical substances are adsorbed and decomposed. At Ehime University, data was obtained indicating that the original plaster for additive-free houses does not emit harmful volatile substances derived from petroleum. Data was also obtained demonstrating that compared to vinyl wallpaper, the original plaster reduces air conditioning power consumption by 16%. 【Other Features and Benefits】 ■ Adsorbs and decomposes chemical substances ■ Easy to maintain ■ Fire resistant ■ Pleasant feel, white luster and texture ■ Reduces air conditioning power consumption by 16% 　And more Construction companies that have adopted this often say they can never go back to wallpaper. It depends on your perspective, but there are some aspects that could be considered disadvantages, so please feel free to ask our staff. Even when comparing advantages and disadvantages, we believe you will feel the benefits are significant. *For details, please download the PDF. *We are currently seeking nationwide distributors! Please contact us for more information.

• Plaster wall
• Plaster wall

The "m series" is a kitchen made of solid wood. With the desire for you to continue using it for a long time, we focused on genuine materials. With proper care, it lasts long and gains depth as an interior over time. We use materials "wood" and "natural stone," which are perfect for a natural lifestyle. We offer set products in four variations according to usage. 【Features】 ■ Solid wood cabinets ■ Natural stone countertops ■ Cast iron enamel sinks ■ Sizes and shapes can be freely combined with cabinets ■ A wide range of functions from all-slide types to dishwasher-compatible types * For more details, please refer to the PDF document or feel free to contact us. * We are currently seeking nationwide distributors! Please inquire for more details.

• System kitchen
• Kitchen unit
• Other Kitchen Supplies

The natural materials used in additive-free homes are not that many, such as plaster, solid wood, natural stone, and tiles. Some may wonder, "Will it end up looking like similar houses?" For those people, we would like you to take a look at our catalog "My Pure House." The theme is "made in nature." Real natural materials have made such a wonderful lifestyle possible. 【Featured Examples (Excerpt)】 ■CASE-01 The theme of living is a comfortable space where light plays ■CASE-02 A home just for us! That was the additive-free house ■CASE-03 We shaped "the air is clean!" ■CASE-04 A house where the flavor of the materials emerges over time ■CASE-05 A country life colored by wind and light *For more details, please refer to the PDF document or feel free to contact us. *We are currently recruiting nationwide agents! For more information, please inquire.

• Living and dining furniture
• Other Kitchen Supplies
• Other furniture

The "Additive-Free House" is completed with a thorough commitment to natural materials. It is not just a healthy house; it offers comfort in both summer and winter, allows you to enjoy the changes over time, and provides the unique value of genuine materials and design. Furthermore, it possesses excellent features such as long-term livability, energy-saving effects, and humidity control. 【Features】 ■ Does not use anything harmful to the body ■ Not just a healthy house; a comfortable home in both summer and winter ■ A house that grows on you with every care you give it ■ Timeless design with the charm of genuine materials and handmade craftsmanship ■ A nurturing home where children and the house grow together *This is a digest version. If you would like to see the full pages, please request a catalog. *We are currently seeking nationwide agents! For more details, please contact us.

• Living and dining furniture
• Other furniture
• Residential interior systems

Additive-free houses are new Japanese homes that focus on natural materials in every aspect, including walls, floors, roofs, and furniture. This catalog features the standards and characteristics of additive-free houses, as well as a wide range of offerings including roofs, doors, and kitchens. [Contents (excerpt)] ■ Standards of additive-free houses ■ Roof ■ Floor ■ Kitchen ■ Wash Room *This is a digest version. If you would like to see all pages, please request the catalog. *We are currently recruiting nationwide agents! For more details, please contact us.

• Living and dining furniture
• Other Kitchen Supplies
• Other furniture

Our "Original Kitchen" is made from natural wood materials that are perfect for a natural lifestyle. It is constructed from laminated wood glued with rice glue. A wooden kitchen is truly suited for a house made of wood and plaster. Kitchens made from colorful printed plywood tend to show scratches and stains over time, and their surfaces fade. From a health perspective, chemicals that volatilize from adhesives can accumulate inside cabinets, which is not good for the body. The Original Kitchen from our additive-free housing is made from laminated wood glued with rice glue. 【Features】 ■ Cabinets made from laminated wood glued with rice glue ■ Layout can be freely adjusted according to the size and usage of the room ■ Soft curves and a sense of cleanliness Stylish and functional design with cast iron enamel sinks ■ The worktop is made of high-quality natural stone as standard ■ A wide variety of stone types available *For more details, please refer to the PDF materials or feel free to contact us. *We are currently recruiting nationwide agents! Please contact us for more information.

• Other flooring materials
• System kitchen
• Other Kitchen Supplies

The "Original Sanitary" of our additive-free homes is a custom-made product using natural materials. Of course, we also offer set items. You can choose from ceramic washbasins with a soft and warm design. Additionally, the counter can be selected from various types of natural stone, tiles, and glass, allowing for flexible coordination in natural or simple modern styles. [Features] - Stylish ceramic washbasins that are resistant to dirt - Cabinets made from solid wood glued with rice glue - Counters made of natural stone & tiles, and glass - Walls made of natural stone & tiles - Bathtubs made of cast iron enamel *For more details, please refer to the PDF materials or feel free to contact us. *We are currently seeking nationwide distributors! Please contact us for more information.

• Bathroom, washbasin and toilet unit
• Bathroom and wash basin units
• Bathroom interior materials (mirrors, tiles, etc.)

The "Shikkui Coated Charred Cork WALL" is a groundbreaking construction method that changes the conventional concept of walls through the synergistic effects of the excellent properties of charred cork and shikkui (lime plaster). In particular, it has obtained strict certifications from the Ministry of Land, Infrastructure, Transport and Tourism for fire resistance, including a 30-minute fire-resistant structure and a 45-minute quasi-fire-resistant structure. As it is made from natural materials, it enables the creation of homes that can be lived in safely and securely for a long time. 【Features】 ■ Fire-resistant ■ Long lifespan ■ Simple structure ■ No short-term maintenance required ■ Condensation suppression *For more details, please refer to the PDF materials or feel free to contact us. *We are currently seeking nationwide distributors! Please contact us for more information.

• Special Construction Method

The original "shikkui" (plaster) of additive-free houses inactivates 99.9% of influenza viruses. It uses high-quality, high-white limestone from Kochi, without the use of chemical substances, and has been uniquely improved to offer excellent durability, safety, and design. Additionally, the workability has been enhanced, making it easy for anyone to apply. 【Features】 ■ Suppresses condensation ■ Adsorbs and decomposes chemical substances ■ Easy to maintain ■ High safety ■ Suppresses mold and mites ■ Fire-resistant ■ Pleasant feel, with a white shine and texture ■ Reduces air conditioning power consumption by 16% (compared to vinyl wallpaper) *For details, please download the PDF. *We are currently seeking nationwide distributors! Please contact us for more information.

• Interior and exterior wall coating materials
• Insulation work
• Interior coating materials

CoolRoof is an energy-efficient roof that incurs low costs throughout its lifecycle, from production to construction, maintenance, and reuse. The term CoolRoof means "cool roof," and it uses natural stone slate. Our unique construction method allows for natural ventilation of heat from the roof using natural wind power, achieving a level of coolness beyond that of conventional roofs. It ensures that "the attic is not hot!" 【Features】 ■ Lightweight despite being made of stone ■ Environment, ecology, health ⇒ As it is made of natural stone, production is pollution-free. * For more details, including a comparison chart of roofing materials, please download the PDF. * We are currently seeking nationwide distributors! Please contact us for more information.

• Interior construction
• Insulation work
• Interior coating materials

Most of the causes of sick house syndrome are chemicals contained in adhesives. For many years, we have researched whether it is possible to build houses without using any chemical adhesives. Finally, we have completed a house that is additive-free and good for the body. We carefully select natural materials for building materials and achieve the ultimate in additive-free construction. For example, we use "rice glue," made from rice, as an alternative to chemical adhesives, and "nikawa," made from animal bones and skins. As a result of years of research, we have been able to produce harmless natural glue consistently and utilize it in fixtures, making it practical. Additionally, we have developed an inexpensive "lime plaster" application method as an interior material to replace problematic vinyl wallpaper, avoiding harmful substances and advancing home building with additive-free materials and methods. 【Features】 ■ Commitment to natural materials to the utmost limit ■ Additive-free materials and methods - Adhesives → "Rice glue" made from rice → "Nikawa" made from animal bones and skins - Lime plaster → For exterior walls, interior walls, and ceilings * For more details, please contact us or download the catalog. * We are currently recruiting nationwide agents! Please contact us for more information.

• Interior construction
• Insulation work
• Interior coating materials

We have been researching for many years whether it is possible to build houses without using harmful chemicals such as synthetic adhesives and chemical building materials. By carefully selecting natural materials for building materials and striving to minimize the use of chemicals, we have achieved the ultimate in additive-free construction, leading to the birth of "additive-free houses." We believe that homes should coexist with nature, and we aim to build houses that anyone can live in comfortably and safely for 100 years. 【Business Activities】 ○ Development and manufacturing of building materials such as wall materials, flooring, roofing, and insulation made from natural materials for "additive-free houses." ○ Sale of building materials and recruitment of agents through the "additive-free house agency system." *For more details or to request a catalog, please contact us. *We are currently recruiting agents nationwide! For more information, please contact us.

• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Flooring materials by material (bamboo, cedar, cherry, paulownia, etc.)
• others