日本住環境 List of Products and Services

"Decarbonization" and "carbon neutrality" have become social propositions, and in a world where "medium and large-scale wooden buildings" are in demand, Japan's housing environment has leveraged the know-how it has cultivated to produce numerous eaves ventilation components, particularly zero-eave fireproof products. With the eaves ventilation component [ep120 zero-eave], we have obtained the industry's first "semi-fire-resistant structure with 120 minutes of eaves" as of February 2025 (according to the "Records related to the certification of structural methods" issued by the Ministry of Land, Infrastructure, Transport and Tourism).

• Ventilation openings

BK Guard A is thicker and more durable compared to regular airtight tapes, making it suitable for the "board airtight construction method" where it is applied to structural materials that require good adhesion even on rough surfaces. This tape features necessary properties for the "board airtight construction method," such as "strong adhesion that follows the movement of the board" and "translucency that makes it easy to see nails." Please choose BK Guard A for board airtight construction. Features: - Sturdy with a solid thickness - Excellent adhesion and followability - Low temperature dependence - Prevents forgetting to drive in nails *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Waterproof tape, adhesive, drain, protective panel

Low-cost housing often has only minimal insulation performance and may have insufficient airtight construction due to its lower cost. Therefore, if you do not make arrangements with the construction company regarding performance in advance, you may end up with a house that is cold or has significant condensation issues. Additionally, many people adopt Type 1 ventilation systems to create a warmer home, but in poorly performing houses, this can also lead to coldness. In this NJK blog, we will introduce the causes of coldness in low-cost housing, the risks of adopting Type 1 ventilation in low airtight homes, and methods for creating a warm house at a low cost, along with actual survey results of low-cost housing. We encourage you to read it. *For more details about the blog, please refer to the related links. Feel free to contact us for more information.

• Ventilation openings
• Ventilation and smoke exhaust equipment

There is an increasing number of housing manufacturers and builders who want to focus on design for the people living in the homes. This blog summarizes how to choose eaves ventilation materials for Japanese living environments, while considering design, as well as the original eaves ventilation performance and fire resistance. Please take a moment to read it. [Contents (excerpt)] ■ Noise-free designs are trending - Noise-free designs without eaves are currently popular in housing - "Eaves-present" style homes ■ Is zero-eaves housing difficult for attic ventilation? ■ Improving living environments by ensuring attic ventilation - Various eaves ventilation materials for Japanese living environments - Conceptual diagram of fire regulations *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

• Ventilation openings
• Ventilation and smoke exhaust equipment

Conventional ventilation materials have always imposed restrictions on exterior design. However, no matter how stylish a house is built, it won't last long if it doesn't ventilate. Japan's living environment proposes ventilation materials that possess the necessary performance while maximizing design freedom to the utmost. ★★★Recommended for the following people!★★★ ◆ Those who want to balance design and performance in housing ◆ Those who don't know which structural ventilation to use ◆ Those who want to know the characteristics of each product

• Ventilation openings
• Galvanized steel sheet
• Decorative slate

With the best waterproof performance in the series, there is no leakage even at wind speeds of 40 m/s for both flat and hip ridges. This versatile ridge ventilation allows for ventilation at the hip ridge when used in combination with open boards (sold separately), not just on the flat ridge. 【Features】 ■ Suitable for hip ridge types, ideal for apartments with gabled roofs separated by firewalls ■ Reliable waterproofing even in strong wind areas ■ Durable with rot-resistant plastic battens ■ Full guard against insects and animals *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Ventilation openings

The ventilation trim material "SEV-15FD" allows for a slim design for eaves and fascia, making it suitable for both eaves-over and eaves-zero houses, and has received positive feedback. It is a product that enhances the fire resistance of the ventilation component "SEV-15." In response to customer requests for a fireproof version of "SEV-15," we have obtained a ministerial certification for a 45-minute quasi-fireproof structure and improved it for use in fire-prone areas. 【Features】 ■ Inherits the slim design of "SEV-15" ■ Achieves high ventilation and waterproof performance ■ Excellent workability *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Ventilation openings

The 24-hour ventilation system installed in the residence expels indoor pollutants outside. However, the ventilation capacity varies greatly due to various factors such as the performance of the house, ventilation pathways, and maintenance conditions, making it difficult to see if ventilation is occurring as expected. By installing a CO2 dual beam monitor, you can check the invisible workings of ventilation. 【Features】 ■ Clearly displays CO2 concentration with numbers and colors! ■ Records CO2 concentration for 24 hours! ■ Adopts NDIR dual beam method ↓ You can purchase from the sales site below ↓ For more details, please download the catalog or contact us.

• Other measuring instruments
• Ventilation and smoke exhaust equipment

Long-term excellent housing requires inspection openings in the floor and ceiling. These openings are areas where insulation deficiencies and air leaks are likely to occur. The Damp Blocker Floor S has high insulation and airtightness, making it an ideal product for high-performance homes. 【Features】 ■ High insulation performance with a thermal conductivity rate of 0.32 W/(m²·K), compliant with energy-saving standards in all regions! ■ Uses EPS insulation material with minimal changes over time! ■ Maintains high airtightness with an inner packing! ↓ For more details, please download the catalog or contact us.

• others

This blog explains the methods for measuring the airtightness of detached houses. To be honest, "Japan Living Environment Co., Ltd." started its business by selling products aimed at improving the "airtight performance" of homes. This article will provide detailed explanations so that even those who are "conducting airtightness measurements for the first time" can feel at ease during the process. Recently, some clients have expressed a desire to "observe the airtightness measurement site." By reading this article, you can familiarize yourself with the process in advance. We will also explain the significance of conducting airtightness measurements, so please read through to the end. 【Contents】 ■ What is airtightness measurement? What can be understood from the measurement results? ■ What happens if the C value is poor? Negative effects of poorly airtight homes ■ Let's conduct airtightness measurements twice! The difference between "intermediate airtightness measurement" and "final airtightness measurement" ■ Methods and specific procedures for airtightness measurement ■ Summary *For detailed content of the blog, please refer to the related links. For more information, feel free to contact us.

• Other measuring instruments

In houses where condensation often forms on windows and walls, the ceiling and attic may also be experiencing condensation. Especially if the attic is condensing, it can negatively impact the house's seismic resistance and durability, so prompt action is necessary. In this blog, we will introduce measures to improve the causes and fundamental reasons for condensation on ceilings and attics. [Contents] ■ Condensation? Roof leaks? The true nature of ceiling stains ■ Causes of condensation on ceilings and attics ■ Risks of leaving attic condensation unattended ■ Can you receive insurance compensation for condensation? How to deal with mold on ceilings and attics ■ Three measures to improve recurring condensation on ceilings and attics ■ Summary *For detailed content of the blog, please refer to the related links. For more information, feel free to contact us.

• Ventilation system
• Ventilation and smoke exhaust equipment

There are four types of 24-hour ventilation: Type 1 ventilation, Type 2 ventilation, Type 3 ventilation, and Type 4 ventilation (passive ventilation). In single-family homes, Type 1 or Type 3 ventilation is commonly used. Both Type 1 and Type 3 ventilation have their own advantages and disadvantages, so it is important to understand their characteristics and choose the one that fits your desired living style. This is a key point to avoid regrets when selecting a 24-hour ventilation system. In this blog, we will focus on explaining the advantages and disadvantages of Type 1 ventilation, Type 3 ventilation, and ductless ventilation, as well as their issues. [Content] ■ Advantages and disadvantages of choosing Type 1 ventilation (enthalpy exchange type) ■ Advantages and disadvantages of choosing Type 3 ventilation ■ Comparison points for selecting a 24-hour ventilation system without regrets ■ Precautions for ductless ventilation (local exhaust wall-mounted fans) ■ Frequently asked questions about Type 1 and Type 3 ventilation ■ Summary *For detailed content of the blog, please refer to the related links. For more information, feel free to contact us.

• Ventilation system
• Ventilation and smoke exhaust equipment

The "Comprehensive Catalog 2024" is a comprehensive catalog that presents the importance of comfort in living spaces, energy conservation, health, and durability through products from Japan's housing environment. You can check all products related to waterproofing, structural ventilation, airtightness, and indoor ventilation. 【Request for a free copy of the Comprehensive Catalog 2024】 *The downloadable PDF is only a portion of the "Comprehensive Catalog 2024." *If you would like the complete version, please check the electronic catalog via the link below or feel free to contact us.

• Ventilation openings
• Piping and insulation
• Drainage and ventilation equipment

The "REV-15" is a slim design ventilation edge material that can accommodate various orientations, construction methods, and specifications, including zero eaves, water side, and under water side, as well as zero eaves and eaves overhang. It meets the demands of customers who are particular about residential design, such as "I want a slim eave and fascia" and "I need materials that can be used regardless of the presence of eaves." Additionally, in response to requests from the field, the effective opening area has been increased by 28%. By improving it to 100 cm²/m, the ventilation volume has been enhanced. 【Features】 ■ Easy installation: Simply attach it to the roof sheathing ■ Slim design: Neatly accommodates eaves and fascia ■ Compatible with diverse designs: Usable with or without eaves ■ High waterproof performance: Increased waterproofing with cut openings and honeycomb shape *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Drainage and ventilation equipment

We would like to introduce the official channel of Nippon Living Environment Co., Ltd., "NJK Channel." We are distributing videos that explain product installation methods and promotions, so please take a look at the related links below. *For more details, please refer to the related links or feel free to contact us.

• others

At the online shop of Japan Living Environment Co., Ltd., you can place orders not only from the cart but also via fax. We offer a variety of products, including the "filter for ventilation fan main unit," "filter for Packon 25," and "filter for Square Flow," so please take a look at the related links below. *For more details, please check the related links or feel free to contact us.*

• Ventilation and smoke exhaust equipment

At Japan Living Environment Co., Ltd., we offer an on-site ventilation fan replacement service. This service is a reliable on-site service where skilled and knowledgeable professionals visit your home and replace your old fan with our new ventilation fan on the spot. Please feel free to contact us when you need our service. 【Repair Process】 ■STEP.1: Preliminary Confirmation ■STEP.2: Application ■STEP.3: Estimate Creation ■STEP.4: Payment ■STEP.5: Schedule Visit Date and Time ■STEP.6: Ventilation Fan Replacement ■STEP.7: Completion *For more details, please refer to the related links or feel free to contact us.

• Ventilation and smoke exhaust equipment

The "SEV-15" is a ventilation edge material that can be used for eaves water drainage, eaves flashing, ceramic eaves, and steel eaves, accommodating a variety of designs based on the presence of eaves, orientation, construction methods, and specifications. By combining a cut opening with a honeycomb-shaped ventilation material, it achieves high waterproofing performance. It can be easily installed by simply fastening it to the framing. Even with a small fascia, it is less likely to protrude, allowing for a clean design without the need for eaves. It reduces the risk of water leakage and condensation affecting the structure, contributing to the longevity of the building. 【We can meet the following requests】 ■ I want to slim down the eaves and fascia. ■ I need materials that can be used with or without eaves. ■ I want to pursue a higher level of residential construction. ★ With this upgrade, the effective opening area has increased by 28% compared to our conventional products (from 78 cm²/m to 100 cm²/m), achieving an increase in ventilation volume. * You can view the product catalog from the "PDF Download." Please feel free to contact us with any inquiries.

• Drainage and ventilation equipment

Clarify the workability for the sash to be used and achieve a neat finish. With double-sided tape included, there is no need for on-site procurement, making installation easy. When used in conjunction with the Shield Corner S, waterproofing around windows can be carried out smoothly. This not only prevents rainwater leakage accidents but also stops the intrusion of condensation water, enhancing the durability of the house. 【Features】 ■ Compatible with various sash thicknesses ■ Improved workability ■ Enhanced waterproofing ↓ For more details, please download the catalog or contact us.

• Window and shutter openings
• Waterproof sheet

A great product that can easily handle the waterproofing of troublesome corner areas in one go. By using it in conjunction with the "Window Shield," it completely blocks rainwater intrusion through pinholes in the sash. It comes with double-sided tape for easy installation. 【Features】 ■ Easy and reliable installation thanks to the integrated molded product with double-sided tape. ■ Ensures and simplifies waterproofing around windows. Combining it with the "Window Shield" enhances leak prevention effectiveness! ■ Completely blocks pinholes! For more details, please download the catalog or contact us.

• Window and shutter openings
• Waterproof sheet

The "ep45 Eaves Zero SII" is a eaves ventilation component designed with the concepts of slim, sharp, and stylish. Its design allows for a clean look without the need for a gable, broadening the scope of design possibilities. It can accommodate designs tailored to the client's requests, and it has improved workability through the elimination of sealing and the lightweight nature of the main body. 【Features】 ■ A clean design is possible without the need for a gable. ■ Equipped with waterproof packing, eliminating the need for sealing work. ■ Successful in slimming down and lightening by omitting thermal insulation boards. ■ Achieved 45-minute semi-fire resistance. ■ High waterproof performance with steel plate openings and a honeycomb shape. *For details, please request materials or view the PDF data available for download.

• Carports and related materials
• Joints between components

The "Open Board" is a product that allows for easy establishment of ventilation pathways at ridge caps when combined with ventilation components such as ridge vents, roof spacers, and eaves vents. It was developed in response to demands like "I don't want the ventilation layer at the ridge cap to just be an air layer!" and "I want to ensure ventilation pathways while maintaining a typical installation!" No special precuts or complex construction are required, and it effectively opens up closed spaces that were blocked by the roof sheathing. 【Features】 - Ensures ventilation pathways and simplifies troublesome construction - Compatible with 2x4 ridge openings - Supports roof sheathing thickness of 12mm *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• others

The Gorm Packing Φ50-Φ75 is a product designed for waterproofing and airtight sealing of pipes. In response to requests for a solution to the difficulty of applying tape alone to the pipe section that penetrates the exterior wall substrate, we have developed a simplified component for pipes that utilizes the shape and material of our product "Gorm Packing CD/PF." 【Features】 ■ No need for waterproofing around the pipe! ■ Excellent weather resistance! ■ The applicable diameters are listed in the top left of the product! ↓ For more details, please download the catalog or contact us.

• others

In the case of traditional eaves ventilation from the eaves, perforated boards or ventilation openings are used, but when viewed from below, the ventilation openings are clearly visible. The "em Eaves Ant 8" is designed so that the ventilation openings are not visible from below, achieving effective ventilation performance without compromising the simple exterior design. Since it can be installed continuously, it prevents air stagnation, attic condensation, and heat buildup. 【Features】 ■ Easy installation ■ Compatible with eaves materials up to 8mm thick! ■ Usable on both horizontal and sloped surfaces, providing a wide range of installation options ↓ For more details, please download the catalog or contact us.

• Ventilation openings

The "ep30 eaves ventilation material" features a large opening area of 150 cm²/m while maintaining a structure that conceals the ventilation holes from below. It is equipped with thermal expansion material and has passed the 30-minute quasi-fire resistance test. It accommodates eaves materials with a thickness of 8 mm and eaves projections of less than 2000 mm. Since it can be installed continuously, it prevents air stagnation and helps avoid attic condensation and heat accumulation. 【Features】 ■ Simple exterior design ■ Blocks rainwater with cut openings and slit openings ■ Can be installed at the wall base, mid-section, and nose tip ■ Fire protection certification obtained (number: QF030RS-0343) ■ Also available is the "em eaves ventilation 8," suitable for use in non-fireproof areas *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Ventilation and smoke exhaust equipment
• Ventilation system
• Ventilation openings

The "SEV-18" can be used for eaves water drainage, verge metalwork, ceramic eaves, and steel eaves, and is a versatile edge material that accommodates various designs based on the presence of eaves, orientation, construction methods, and specifications. By combining a cut opening with a honeycomb-shaped ventilation material, it achieves high waterproofing performance. It can be easily installed by simply fastening it to the framing. Even with a small nose cover, it is less likely to protrude, allowing for a clean design without the need for eaves. It reduces the risk of water leakage and condensation affecting the structure, contributing to the longevity of the building. 【We can meet the following requests】 ■ I want to slim down the eaves and nose cover. ■ I need materials that can be used with or without eaves. ■ I want to pursue a higher level of residential construction. *For more details, please refer to the PDF materials or feel free to contact us.

• Ventilation openings

The "Roof Spacer WB" is a roof ventilation layer support component that incorporates wind resistance when using fiber-based insulation materials, and features a circular shape for moguls (bumps). It securely maintains a 30mm roof ventilation layer, enhancing durability and heat dissipation, which helps prolong the lifespan of the house. 【Features】 ■ High wind resistance ■ New material and innovative PET non-woven fabric ■ Quick and clean installation ■ Creates a safe working environment for roof construction *For more details, please refer to the PDF document or feel free to contact us.

• others

I want to protect Japan's roofs. The Roof Spacer, a roof ventilation layer retention material, is an essential item for roof insulation. It achieves top-class moisture permeability and durability against moisture. It has excellent compatibility with on-site spray polyurethane foam. It ensures a reliable ventilation layer regardless of the type of insulation material used. Roof surfaces are areas that are directly affected by heat and cold, experiencing extreme temperature differences. The material used to retain the ventilation layer is not only strong but also has high heat resistance, moisture durability, and moisture permeability, shaped uniquely from PET non-woven fabric. It is an essential item for achieving the durability of a 100-year house. 【Features】 ■ Compatible with various insulation materials ■ Easy and clean speed construction ■ PET non-woven fabric specification achieves high performance For more details, please download the catalog or contact us.

• Waterproofing work
• Roof and gutter construction
• Insulation work

■Product PV Now Available■ For more details, check the video below! The "Rufuro 400" is an exhaust-type centralized ventilation system that is compact and energy-efficient while maintaining a stable ventilation volume over a long period. The fan is powerful, with a maximum airflow of 470m3/h. It is less affected by duct pressure loss and external wind, making it capable of handling large properties with just one unit, resulting in low costs. It features air supply vents that reduce cold air at floor level, ensuring comfort even in winter. It can also ventilate humid bathrooms and toilets simultaneously. 【Features】 ■ Energy-efficient and low initial investment for cost-effectiveness ■ Maintenance is once a year, requiring no tools and just 4 simple steps! ■ Operating noise is only 25dB, designed for quiet operation ■ Equipped with a drain cap, allowing for bathroom ventilation as well For more details, please download the catalog or contact us.

• Ventilation and smoke exhaust equipment

Introducing "Rufuro S" handled by Japan Living Environment Co. 【Features】 ■ Achieves a power consumption of about 10W with a DC brushless motor ■ Realizes an astonishingly low noise level ■ Lightweight at 3kg, making installation easy ↓ For more details, please download the catalog or contact us.

• Ventilation and smoke exhaust equipment
• Ventilation system

Advanced waterproof structure and maintenance-friendly design that can be used in the bathroom "Piara 24" is a Type 3 ventilation system that excels in maintenance. Being wall-mounted, it makes cleaning the filters, which can be a hassle for homeowners, easy. Furthermore, it enables 24-hour ventilation, allowing for bathroom ventilation without the need for separate local ventilation, thus reducing costs. 【Features】 ■ Reliable waterproof structure Even if the moisture absorbed in the bathroom turns into water droplets, the design allows it to be expelled from the main unit and collected in the drain tray. ■ Maintenance-friendly With a filter attached to the main intake, maintenance is simple—just clean the filter. Being wall-mounted makes it easy to remove the filter, allowing for quick maintenance. ■ Energy-saving & quiet design ↓ For more details, please download the catalog or contact us.

• Ventilation and smoke exhaust equipment
• Ventilation system

Secure ventilation pathways to prevent condensation damage! If the ventilation pathways in attic spaces, balconies, or parapet risers are closed off, there is a possibility of condensation damage occurring inside. Ventilation slits are components designed to efficiently release moisture and heat from these enclosed spaces to the outside. This connects the attic and the ventilation layer, promoting the drying of structural materials and enhancing durability. 【Features】 ■ Can be installed with or without plywood ■ Super waterproof mechanism with upper and lower openings ■ Firmly secures ventilation pathways ■ Effectiveness increased through component combinations ↓ For more details, please download the catalog or contact us.

• Ventilation openings
• Waterproofing work
• Roof and gutter construction

The ventilation layer can directly receive the upward airflow under the balustrade of the balcony, ensuring a reliable ventilation pathway. Additionally, it serves as a protective material, reducing construction effort on-site. 【Features】 ■ Multi-directional ventilation ■ No protective covering or external wall material backing required ■ Compatible with various wall thickness dimensions ■ Clean appearance of the balcony ↓ For more details, please download the catalog or contact us.

• Ventilation openings

Ideal for long-term excellent housing with higher insulation and airtightness performance. A ceiling inspection opening is necessary for long-term excellent housing. To conduct regular maintenance inspections, a dedicated inspection opening that is easy for people to access and has excellent insulation and airtightness performance is essential. The "Loft Ladder 2800 Super Thermo" has increased the insulation material from the conventional 30mm to 74mm, nearly doubling the insulation performance. Additionally, the triple structure of the packing prevents air leakage and ensures airtightness. 【Features】 ■ Significant increase in insulation performance ■ High airtightness with triple packing ■ Neat finish with lining ■ Safe design with standard handrail ↓ For more details, please download the catalog or contact us.

• Heat insulation and heat shielding methods
• Special function opening

Standard ventilation component for flat roofs and snow-free roofs. It ensures adequate ventilation without compromising aesthetics in small roof ventilation for narrow areas and zero-eave types. There is no need for traditional eaves ventilation openings, so there is no worry about water stains dirtying the exterior walls. By providing ventilation openings around the eaves in all directions, it can respond to any wind direction. This component is perfect for zero-eave houses. The Eaves Vent 18 can also be used as an intake grille (entrance) for the foundation part in the ventilation layer method. 【Features】 ■ Quick and easy installation ■ Waterproof and insect-proof performance with honeycomb structure ■ Intake and exhaust grilles that respond to all weather and directions ↓ For more details, please download the catalog or contact us.

• Ventilation openings

Convenient eaves ventilation components that can be used as is or in combination. They can be used as eaves ventilation components in narrow areas, zero eaves, and eaves houses. The "Eaves Vent 585H" is recommended for regions with heavy powder snow due to its high waterproofing properties. Both can be combined with the Eve Protector to be used as fire-resistant components. 【Features】 ■ Quick and easy installation ■ Waterproof and insect-proof performance due to honeycomb structure ■ Air intake and exhaust that accommodates all-weather and all-directions ■ Fire resistance rating of 1 hour when combined ↓ For more details, please download the catalog or contact us.

• Roof and gutter construction
• Ventilation openings

This is a low-emission shade made of aluminum material that can be installed on windows to combat the summer heat, reduce cold air from windows in winter, and retain indoor heat. Additionally, the semi-transparent aluminum coating allows for visibility from indoors to outdoors without darkening the interior during daytime use. We offer two sizes to fit window dimensions: 40cm and 80cm types. 【Features】 ■ Easy installation and removal, plus simple adjustments. ■ Excellent cost-effectiveness! Since it is installed on the inside of the window, it experiences less deterioration, eliminating the need for annual replacements. ■ Dual benefits for two seasons. It reduces strong summer sunlight and winter cold air entering through the windows. ■ Smart and easy storage. When not in use, it can remain attached to the window and be rolled up and clipped. ↓ For more details, please download the catalog or contact us.

• others

Functions as an entrance to the ventilation layer! To ensure the longevity of a house, it is important to clarify the entry and exit points for airflow. The "Insect-Proof Vent SL" is used as that entrance and maintains the ventilation layer. Additionally, by peeling off the ventilation material according to the size used, it can accommodate wall under-ventilation layers of 20mm, 17mm, and 14mm, making it a very flexible component. *The Insect-Proof Vent SL18, when the ventilation material is peeled off, can accommodate wall under-ventilation layers of 17mm, 14mm, and 11mm. 【Features】 ■ Ventilation layer retaining component usable in three sizes ■ Prevents fluttering of moisture-permeable waterproof sheets ■ Ventilation and insect-proof performance through honeycomb structure ↓ For more details, please download the catalog or contact us.

• Ventilation openings

Universal ridge ventilation component that does not limit roofing materials "Flat Vent" is a ridge ventilation component characterized by its conical ventilation material. It accommodates a variety of roofing materials and installation methods, and its thin profile does not interfere with the appearance of the house. It is truly a versatile ridge ventilation component with excellent waterproofing and ventilation properties. 【Features】 ■ Easy to process on-site. Can be used for lower roofs or single slopes with half cuts on-site. ■ Standard water drainage included. No need for separate installation during construction, making it cost-effective. ■ Excellent ventilation and waterproofing. The conical ventilation material arranged in a staggered pattern ensures reliable waterproof ventilation. ■ Good design that does not disrupt the appearance. At a thickness of 15mm, it is unobtrusive even at the ridge top. ↓ For more details, please download the catalog or contact us.

• Ventilation openings

Ventilation without compromising aesthetics! The 'ep45 No Eaves' is the ideal ventilation component for simple designer houses and other homes without eaves. It can be used not only for eaves but also for the gable, achieving excellent ventilation performance without compromising a simple exterior design. In the event of a fire, the built-in thermal expansion sheet reacts to high heat, sealing the opening to prevent the spread of flames to the attic. 【Features】 ■ Improved workability. Easy installation with included screws from below. ■ Passes fire resistance tests specifically for no-eaves applications! ■ Enhanced waterproofing. The cut opening and honeycomb shape improve waterproofing. ■ Abundant set options. There are plenty of separately sold set options, ensuring peace of mind during installation. For more details, please download the catalog or contact us.

• Ventilation openings

Achieving about twice the ventilation performance of conventional products! The 'ep45 Zero S' has been upgraded and is now available as the 'ep45 Zero SG'. In response to feedback that "the conventional 'ep45 Zero S' is too small for large houses" and "in some buildings, even installing it around the entire perimeter does not secure the necessary ventilation volume," we developed this product to secure the required ventilation volume with half the number of conventional products. By enlarging the openings, we achieved about twice the effective ventilation area compared to conventional products, and the length of the product has also been doubled to 1820mm compared to the conventional model. The 'ep45 Zero SG' is not only fire-resistant and waterproof, but it also features high-quality materials, ensuring reduced installation effort and undoubtedly contributing to higher-quality home construction. 【Features】 ■ Achieves a large opening of 150㎠/m. Steel plate openings are arranged in double layers on vertical and horizontal planes. ■ Obtains 45-minute fire resistance. The thermal expansion material exhibits high expansibility when heated above 200℃. ■ Compatible with a variety of finishing materials. It can be used with various finishing materials without restrictions. ■ Highly durable coating that is resistant to rust. For more details, please download the catalog or contact us.

• Ventilation openings

Guard the airflow between studs and pipes! Further enhance your home's airtight performance. A new lineup of airtight components has been added. The Airflow Stopper GW is a product that can be installed between columns of different sizes in the spaces between studs and pipes. It blocks the airflow from outside that enters from under the floor, preventing it from passing through the walls and escaping into the attic. This helps to prevent a decrease in insulation performance and wall condensation, enabling the construction of higher-quality homes. 【Features】 ■ Clearly visible with the included seal. Compatible with pipe spacing (395mm) and stud spacing (430mm). ■ Firm airflow stopping. Fits snugly to prevent airflow loss. ■ The corner R is a key point. The sheet can be neatly installed when bent. ■ Easy installation. Simple airtight construction makes it easy on-site. ↓ For more details, please download the catalog or contact us.

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Since it is an add-on, it can be used for both new construction and renovations! This is an add-on airtight outlet cover. When installing electrical outlets or telephone modular jacks on walls, the airtight sheet may get cut. This component is used to prevent the intrusion of water vapor, dust, and air from that point, maintaining airtightness. Being an add-on type, it can be installed regardless of whether it is new construction or a renovation! 【Features】 ■ For new construction! For renovations!! Since it is an add-on type, it can be installed regardless of new construction or renovations. ■ Easy and reliable airtightness due to the conical wire entry (patented technology). ■ Prevents mixed wiring! A spacer is included with the W type to counter mixed wiring. ↓ For more details, please download the catalog or contact us.

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An excellent product that allows for waterproof treatment around troublesome corners in one go. By combining two types of shield corners A/B, it completely blocks pinholes at various three-way intersections such as window corners and balcony corners! Made of soft polyethylene material, it is thick and excellent for construction. It not only prevents rainwater leakage accidents but also prevents the intrusion of condensation water, enhancing the durability of the house. 【Features】 - Ensures and simplifies waterproof treatment around windows. Combining shield corners with window shields enhances leakage prevention effectiveness! - Completely blocks pinholes! - Easy and reliable installation due to its one-piece molded design. For more details, please download the catalog or contact us.

• others

Ideal for houses with quasi-fireproof structure! The GW Insulation BOX 100 is a product designed for houses with quasi-fireproof structure. Currently, areas that were constructed using spiral pipes can now safely use PVC pipes and other materials without worrying about fire resistance by using the GW Insulation BOX 100. The shape covers the pipe area with glass wool (non-combustible material), greatly expanding the scope of installation. 【Features】 ■ Compatible with quasi-fireproof standards even with PVC pipes ■ Supports various wall thicknesses. Thanks to the flexibility of GW, it can accommodate wall thicknesses from 50mm to 100mm. ■ Easily ensures water slope. Fixed at an external downward water slope of 1/100 or more. ■ Easy installation. Can be installed easily, just like conventional insulation boxes. ↓ For more details, please download the catalog or contact us.

• others