Remote live inspection service

Is your underfloor okay? With "Kazetarou," you can prevent condensation and extend the lifespan of your building!

The humidity indoors is visible as condensation, so by opening windows or using exhaust fans, the trapped moisture can be expelled outdoors. But did you know that there is also a lot of this moisture under the floor? Modern homes have achieved excellent comfort through high airtightness and high insulation. However, as the structural reinforcement of foundations has progressed, the crawl spaces have become lower and the compartments more complex, making ventilation under the floor more difficult. Just checking one of the items below does not mean you can relax. If any one of them applies, it is a danger signal for your home. 【Let’s check together】 ■ When you open the underfloor storage or tatami mats, there is a musty smell. ■ There are black stains on the walls near the closet or dresser. ■ There is always condensation dripping from the windows or the lower part of the window sills. ■ The tatami feels damp and spongy. ■ The floor creaks, or you occasionally see winged ants in places like the bathroom. ■ You often get bitten by mites. ■ The floorboards feel sticky. ■ The cloth foundation is always damp or has moss growing on it. ■ There are cracks in the cloth foundation. *For more details, please refer to the PDF document or feel free to contact us.

• Underfloor storage unit
• Ventilation system

Introducing the importance of "attic ventilation" along with a checklist!

Originally, Japanese houses were designed to suit the hot and humid climate, featuring an open structure that allowed for good ventilation. However, modern homes have pursued comfort, leading to increased airtightness and insulation, which has begun to raise concerns in recent years. If only one of the following items is checked, it does not mean you can relax. If any apply, it is a warning signal for your home. 【Let's check together】 ■ It's cool outside, but the room is stuffy ■ Air conditioning is ineffective ■ Many uncomfortable nights ■ Mold has appeared on the ceiling or in closets ■ The room smells musty ■ Eyes feel irritated ■ Children often cough ■ Condensation has appeared in the attic *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation system
• Roof and gutter construction

The reduction rate is approximately 15% to 23%! We confirmed energy-saving effects by ventilating the attic.

This experiment examines the "effect of indoor air conditioning electricity consumption." By ventilating the attic, the reduction rate of electricity consumption during air conditioning operation on sunny days was approximately 15% to 23% (*), confirming the energy-saving effect. Additionally, a comparison of temperatures between the attic, indoors, and the human body using a thermotracer showed that with a ventilation system, the temperature of wooden components such as beams in the attic and the ceiling surface was lower, and the temperature difference indoors was reduced with height. *Varies depending on conditions and the air conditioner's capacity and efficiency. Air conditioning operation time: 16:00 to 22:00 for 6 hours. 【Results of the indoor air conditioning electricity consumption effect experiment】 ■ The reduction rate of electricity consumption during air conditioning operation was approximately 15% to 23% (on sunny days). ■ The energy-saving effect was confirmed. *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation system
• Roof and gutter construction

We will perform ventilation operations to create a suitable environment for the wood under the floor.

We will introduce the operation program of the "Fuutarou Unit." The hybrid sensor detects the water vapor (humidity) in the outside air, and the hybrid controller independently controls the Fuutarou blower type and the Fuutarou mixer type. It operates ventilation to create a suitable environment for the wood under the floor. 【Features】 ■ Prevents pest breeding - By improving ventilation, it reduces the conditions for pest breeding. ■ Prevents condensation and extends the lifespan of the building - By forcibly bringing in air, it maintains a comfortable state for the wood. - Particularly effective in eliminating condensation. ■ Creates a comfortable indoor environment - Reduces conditions for the growth of dust mites and mold, contributing to family health. *For more details, please refer to the PDF document or feel free to contact us.

• Underfloor storage unit
• Ventilation system

When the moisture content exceeds 20-25%, wood decay is more likely to occur.

We conducted an experiment on how completely dried wood is affected by the ventilation conditions under the floor in a test house. Initially, the moisture content rises as it absorbs moisture from under the floor, but in the case of having a "subfloor ventilation fan" installed, the moisture content of the posts stabilizes at around 20%, as shown in the graph in the image. It can be seen that the moisture content is about 5% lower compared to when there is no "subfloor ventilation fan." 【Test Overview】 <Comparison of Moisture Content in Subfloor Posts in the Test House> ■ Duration: May 24, 2003 - July 27, 2003 ■ Post Size: 105×400mm, measuring 3 posts, the graph shows the average moisture content of the 3 posts ■ Measuring Equipment: Sanko Electronic Research Institute Co., Ltd. Moisture Meter MR-200 *For more details, please refer to the PDF document or feel free to contact us.

• Underfloor storage unit
• Ventilation system

Measures against condensation in summer! Condensation and corrosion within wall structures are often difficult to detect.

In 2020, the "mandatory energy-saving standards for housing" are scheduled to be implemented, and it is expected that Japanese housing will increasingly aim for high airtightness and high insulation. However, at the same time, measures against condensation during the summer must be considered. In a site where glass wool was filled using the 2x4 construction method and a vapor barrier was installed on the interior side, significant corrosion due to condensation occurred. It is believed that the interior became hot and humid, leading to condensation as it was cooled by the air conditioner on the inside. The hold-down hardware also showed white mold, and if corrosion progresses like this, it will pose problems for the durability of the building. This type of summer condensation particularly occurs in regions with high temperatures and humidity, like Japan. Therefore, it is necessary to implement sufficient measures against winter-type condensation while simultaneously preventing summer-type condensation. *For more details, please refer to the PDF document or feel free to contact us.

• Housing structure technology/long-term superior housing technology
• Heat insulation and heat shielding methods

The cause is a large amount of water vapor! The challenge is how to remove humidity and suppress mold and decay.

Foundation insulation is a method of insulating the foundation that faces the outside air. The period when the risk of condensation and mold is highest with foundation insulation is from June to September of the first year after completion. The main cause is the large amount of water vapor coming from the concrete floor. Especially, wood that contains a lot of moisture significantly deteriorates in strength, so it is important to be cautious considering durability against earthquakes and typhoons. As a solution to these humidity problems, our company has developed a dedicated underfloor dehumidifier called "Dry Pro." It effectively eliminates humidity and condensation, and is useful for preventing mold, pests, and decay fungi in the underfloor wooden components. (Patent and design application pending) 【Features of Dry Pro】 ■ Dehumidification capacity of approximately 400-600cc per day on humid days during the rainy season and summer ■ Circulates dehumidified air widely using a blower ■ Quiet design: 45/44dB ■ Standard equipped with phytoncide that has deodorizing effects *For more details, please refer to the PDF materials or feel free to contact us.

• Safety Supplies
• Insulation work
• Heat insulation and heat shielding methods

After about one month, a drier condition (wood moisture content 12%) was confirmed!

"Dry Pro" is a floor underfloor dehumidifying fan that effectively eliminates moisture and condensation, and is effective against mold, pests, and decay fungi in the wooden parts under the floor. Assuming the early stages of new construction using foundation insulation methods, 36 liters of water were sprayed on the underfloor foundation of each building, and dried wood (cedar) was installed to measure the moisture content of the wood and the humidity under the floor. As a result, the buildings where this product was installed gradually dried out by repeatedly operating the dehumidification process every day, and after about two months, an average of approximately 70% RH dry condition was confirmed even outside of dehumidification operation hours. [Experiment] ■ Test House A - Floor area approximately 10 tsubo - Underfloor with foundation insulation method (Dry Pro installed) ■ Test House B - Floor area approximately 10 tsubo - Underfloor with foundation insulation method (without dehumidifying fan) *For more details, please refer to the PDF document or feel free to contact us.

• Insulation work
• Air compressors, blowers and pumps
• Heat insulation and heat shielding methods

The Future of Wind and Housing! A Discussion on the Current State of Attics in Japanese Homes.

In this discussion, we explain measures against humidity and condensation in attics, as well as the importance of ventilation. Our company launched the underfloor ventilation system in 1981, and two years later, we introduced the attic ventilation system. Since then, after several model changes, it has become common to adopt it as a standard specification for new constructions. However, through many years of promotional activities, there is an impression that attic ventilation is perceived only as a measure against heat by both businesses and end users. *For more details about the discussion, you can view the PDF materials or related links. Please feel free to contact us for more information.*

• Ventilation system

Identify the characteristics and factors of noise, and utilize them for the design and quality verification of quieter products!

Introducing SEIHO's unique facilities, measuring devices, and instruments for conducting a wide range of tests, experiments, and measurements repeatedly. The anechoic chamber is equipped to accurately measure sounds generated by ventilation systems and motors without being affected by external noise or reverberation. Using an FFT analyzer to perform frequency analysis of noise, we identify the characteristics and factors of noise, which can be utilized for designing quieter products and quality verification. For inquiries or consultations regarding inspections, please feel free to contact your sales representative or the SEIHO Products Sales Headquarters. 【Features of Noise Test Measurement Equipment】 ■ Accurate measurements unaffected by external noise or reverberation ■ Panel-type, dimensions 4m × 4m × 2.5m ■ Sound insulation characteristics: 62dB at 500Hz ■ Indoor background noise: 20dB ■ Identifying characteristics and factors of noise to aid in designing quieter products and quality verification *For more details, please refer to the PDF document or feel free to contact us.

• Vibration and Sound Level Meter

A comfortable indoor environment! Prevents condensation and extends the lifespan of the building.

The "Kazetaro" underfloor ventilation system forcibly introduces air into the crawl space, maintaining a comfortable condition for the wood. It is particularly effective in eliminating condensation. Underfloor ventilation also impacts the indoor environment, reducing conditions that promote the growth of dust mites and mold, thus benefiting the health of the family. The Kazetaro unit features a hybrid sensor that detects the amount of water vapor (humidity) in the outside air, and a hybrid controller that independently controls the Kazetaro blower type and Kazetaro mixing type, creating optimal ventilation operation for the wood in the crawl space. 【Features】 ○ Prevents the breeding of pests by improving ventilation effectiveness ○ Forcibly introduces air into the crawl space to prevent condensation ○ Maintains a comfortable condition for the wood, extending the lifespan of the building ○ Reduces conditions for the growth of dust mites and mold, creating a comfortable indoor environment For more details, please contact us or download the catalog.

• Ventilation and smoke exhaust equipment
• Unit and other construction

Measures against heat in the shed! Discharges accumulated heat and improves cooling efficiency! Effective against humidity, condensation, and VOCs!

Modern homes have advanced in high airtightness and high insulation, resulting in issues such as heat accumulation in attics during hot seasons, which decreases air conditioning efficiency. "Attic Ventilation Wind Helper" helps improve air conditioning performance by forcibly expelling heat from the attic and is also effective in preventing condensation and addressing VOCs. We will present a demonstration unit, so please contact us for conditions and details. *The demo schedule will be arranged separately. 【Effects】 ○ Expels heat from the attic, improving air conditioning efficiency ○ Shuts out condensation ○ Effectively expels formaldehyde and VOCs, which are causes of sick house syndrome, protecting the health of your family and home. For more details, please contact us or download the catalog.

• Ventilation system
• Roof and gutter construction

Contributes to the suppression of condensation and mold under the floor. A new model compatible with the foundation packing method has been introduced.

The "DRY PRO" Ver3 is an electronic dehumidifying and ventilation unit for underfloor use, combining a Peltier cooling device with a dedicated stirring and diffusion-type blower. In addition to the diffusion-type model "TYPE-D" for foundation insulation methods, a new model "TYPE-C" compatible with foundation packing methods has been added to the lineup. It can dehumidify even in areas where moisture tends to accumulate by stirring a wide range of air. It helps suppress moisture and condensation under the floor, contributing to the prevention of mold, pests, and decay fungi in wooden components. Furthermore, with the version upgrade in June 2024, a powerful dehumidification operation mode has been added. The surrounding temperature range for dehumidification operation (low-temperature dehumidification operation range) has been expanded, now accommodating surrounding temperatures down to 5°C. 【Features】 ■ Easy installation with a φ22 drainage hole (no drainage pump required) ■ Automatic operation possible with a dedicated indoor controller ■ The direction of the aluminum duct of the blower can be set freely ■ Dehumidification capacity of 1800mL per day (depending on conditions) ■ Uses non-fluorinated electronic cooling technology ■ Compatible with underfloor flooding sensors (optional) *For more details, please refer to the PDF document or feel free to contact us.

• Heating and cooling equipment and facilities

"It's too late after becoming a victim." In light of recent violent robbery incidents, what kind of crime prevention measures should be taken? Here are some suggestions for self-defense measures.

"Life Defense Air" is a wireless sensor system installed on windows and doors that detects intruders and deters them with a loud alarm sound, making it difficult for them to continue their actions. At the same time, it makes a phone call to a pre-registered smartphone to notify of the abnormal situation. Even when at home, it can be set to a security mode, deterring intruders with the alarm sound. Additionally, it includes a monitoring function for the elderly. For example, by installing wireless sensors in places where daily activities can be monitored, such as the bathroom door, it leaves a one-call notification on the family member's smartphone at a set time each day. Those monitoring can feel reassured simply by checking the call history at the designated time. The fact that the elderly do not need to operate any machinery is also excellent.

• Home Security

Deterrence & Reporting: Keep Intruders Away! Introducing the Benefits in an Easy-to-Understand Manga Format!

"Understanding Life Defense Air through Manga" is a resource for the self-defense security system "Life Defense Air," which offers comprehensive features and easy operation for crime prevention alerts, fire warnings, and emergency notifications. Despite its robust security functions, it is easy to operate. It can be widely utilized in general households, offices, and stores, and comes standard with monitoring features that are helpful for elderly individuals living alone or children who are often home alone, as well as a remote control with an emergency button for unforeseen situations. It introduces plans such as the "Office Plan" and "General Household Plan" in an easy-to-understand manga format. [Contents] ■ Utilization tailored to lifestyle ■ A chapter for those who want a means of contact in case of emergencies ■ A chapter for those worried about nearby office break-ins ■ A chapter emphasizing the importance of preemptive measures ■ A chapter for those concerned about car break-ins in the neighborhood ■ A chapter about the delay in noticing a fire while inside the house *For more details, please refer to the catalog or feel free to contact us.

• Security Sensor Systems
• Home Security
• Other security systems

Introducing a series of ventilation products that extend the lifespan of homes, along with other products that contribute to creating a comfortable living environment.

This catalog is a comprehensive catalog of SEIHO, which produces and sells small motor ventilation equipment, security devices, and more, covering design, development, manufacturing, and sales. It includes the "Underfloor Ventilation Series" and "Underfloor Dehumidification Series," which are effective for addressing moisture and condensation under floors, the "Attic Ventilation Series," which is effective for dealing with heat in attics, and the self-monitoring "Security Series," which can perform burglary alerts, fire warnings, and emergency notifications. [Contents] ■ Underfloor Ventilation Series ■ Underfloor Dehumidification Series ■ Attic Ventilation Series ■ Time Switch Lineup ■ Security Series ■ Indoor Deodorization Series ■ Other Related Products *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation and smoke exhaust equipment
• Home Security
• Ventilation system

Fujikohsuhou Co., Ltd. will hold a free online seminar titled "Laser Hardening Data by Material Type" on Wednesday, December 17, 2025. There are various materials that are easy or difficult to harden in laser hardening. We provide a simple explanation of the reasons behind this. This seminar will be a useful reference for design engineers considering laser hardening during the design phase. 【Recommended for】 ■ Those who want to know about materials commonly used in laser hardening ■ Those who want to understand the hardening characteristics of various materials

Hello! This is OK-DEPOT. Starting tomorrow, we will be able to make proposals immediately! We will hold a comprehensive seminar on passive building materials. We encourage you to participate. *Please note that we may refuse participation from competitors or those in the same industry. ★Recommended for: - Those who want to make passive building materials a strength of their company - Those who want to improve their proposal skills and increase unit prices - Those who want to use this as part of new employee training <How to Attend> This seminar will be conducted online (via the Zoom web conferencing system). You can participate from anywhere using your usual computer, smartphone, or tablet. Even if you have never used it before, you can easily connect by clicking the URL in the invitation email. (It takes about 3 minutes) After applying, please enter the seminar using the invitation email sent the day before the event. *To deliver valuable information to your company, we require video to be ON. If we cannot confirm that your video is ON, you may be asked to leave. Thank you for your understanding. *For quality improvement, the seminar will be recorded.

In this seminar, we will introduce practical approaches—along with real company case studies—to creating everyday-use employee benefits that enhance engagement and improve the work experience in response to the challenges facing the logistics and transportation industry, such as reduced income, rising turnover, and hiring difficulties caused by the growing impact of the “2024 Logistics Problem.” We will share insights on building systems that can be sustained even in busy logistics environments, as well as design principles that encourage positive behavioral change—providing actionable ideas for improving frontline operations. This seminar is recommended not only for executives, administrative teams, labor management, and HR professionals in logistics and transportation companies, but also for anyone interested in improving work styles, employee retention, and benefits programs. We look forward to your participation.

We will be exhibiting our CO2 sensors and controllers at the 10th Smart Building EXPO within JAPAN BUILD, which will be held next week. This exhibition is one of the largest specialized trade shows in the construction industry, showcasing the latest technologies in IoT for buildings, BEMS, energy-saving air conditioning, and building management systems. When you visit, please be sure to stop by our booth. We sincerely look forward to seeing you. Location: Tokyo Big Sight Dates: December 10 (Wednesday) to December 12 (Friday), 2025, from 10:00 AM to 5:00 PM Booth: 33-25 *Advance registration is required for attendance.

Amid the increasing demand for improved security standards across the entire supply chain, the Ministry of Economy, Trade and Industry is attracting attention with its "Supply Chain Measures Evaluation System," which is scheduled to begin operations in the second half of 2026. This system serves as a new standard for companies reviewing their management of business partners and governance of subcontractors. Based on data analysis from approximately 1,300 companies, we will outline four common challenges faced by businesses and introduce a phased approach toward achieving ★4 certification. <Session 1> Concrete Path to Achieving ★4 Certification – Four Challenges and a Phased Approach Revealed by Data Analysis of 1,300 Companies Speaker: Seiya Nakaki, NRI Secure Technologies <Session 2> Realizing Visualization and Continuous Management of Supply Chain Risks with SecureSkeCH – Also Compatible with the Ministry of Economy's Supply Chain Measures Evaluation System Speaker: Tatsuya Seto, NRI Secure Technologies 【Target Audience】 - Those who want to grasp the overview of the Supply Chain Measures Evaluation System and tips for compliance. - Those aiming to build a continuous management system with an eye on obtaining ★4 certification and subsequent operations. - Those in the position of clients who wish to review the subcontractor management process.