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  3. セイホープロダクツ 業務本部
  4. [Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters
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  • Sep 10, 2025
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Sep 10, 2025

[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

セイホープロダクツ セイホープロダクツ 業務本部
In homes where "flooding under the floor" has occurred due to heavy rain, various damages and risks of secondary damage may be lurking in unseen areas. To protect the durability of the house and the health of the family, we have organized the points that should be prioritized for inspection and action. 【Table of Contents】 1. Why is inspecting under the floor essential? 2. 【Emergency Checkpoints】First, check here! A. Presence of flooding or moisture B. Condition of the wood C. Presence of unusual odors D. Signs of termites or pests E. Condition of ventilation openings 3. Immediate response methods when damage is discovered - Mild situations with little standing water or moisture - - Situations with standing water where structural impact is a concern - The damage from flooding under and above the floor due to heavy rain requires significant recovery efforts, including cleanup. We sincerely sympathize with those who have been affected. Please be sure to read the 【related materials】【related links】. ↓ ↓ ↓
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[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters | SEIHO PRODUCTS
Post-Typhoon and Heavy Rain Underfloor Checkpoints and Countermeasures | SEIHO PRODUCTS
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タービン・ユニット Type Ai無塗装.jpg

Underfloor Ventilation Series "Turbine Unit Type Ai"

Exhaust type + diffusion type unit! A subfloor ventilation series that detects humidity conditions and draws in dry air from beneath the floor.

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the diffusion-type blower. When there is a high amount of water vapor, only the diffusion-type blower operates, and when it is low, the exhaust ventilation system operates in conjunction, bringing in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and blowing with absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and underfloor water issues, displaying them on the controller. 【Features】 ○ Effective against underfloor moisture, condensation, and mold ○ Powerful exhaust and diffusion For more details, please contact us or download the catalog.

  • Ventilation system
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タービン・ユニット Type Bi無塗装.jpg

Underfloor Ventilation Series "Turbine Unit Type Bi"

Exhaust type + stirring type unit type

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the mixing fan. When there is a high amount of water vapor, only the mixing fan operates, and when it is low, the exhaust ventilation system operates in conjunction to bring in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and air supply using absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and water issues, displaying them on the controller. 【Features】 ○ Effective for underfloor moisture, condensation, and mold prevention ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

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風太郎ユニット(かくはんマイナーチェンジ).jpg

Underfloor ventilation unit "Kazetaro"

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.

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風太郎ベーシック(SS).jpg

Underfloor ventilation system "Fuutaro Basic"

Equipped with a water immersion sensor! Detects leaks due to flooding under the floor, deterioration of drainage pipes, and other damages!

"Kazutarou Basic" is a localized underfloor ventilation system designed to address areas prone to moisture accumulation, such as around water sources and the north side of buildings. Equipped with a flooding sensor, it quickly detects not only underfloor flooding caused by water damage but also leaks due to deterioration or damage to drainage pipes, providing peace of mind by alerting you to abnormalities. We offer two models: the "Kazutarou Basic SS" with a timer type and flooding sensor, and the standard timer type "Kazutarou Basic." 【Features】 ■ Equipped with a flooding sensor ■ Detects underfloor flooding and leaks due to deterioration or damage to drainage pipes ■ Supports environments where natural ventilation is insufficient with forced ventilation ■ Safety measures against increasing underfloor flooding and leaks *For more details, please refer to the external link page or feel free to contact us.

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top.jpg

Underfloor electronic dehumidification unit 'DRY PRO' Ver3

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.

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Related catalog(5)

Underfloor Ventilation Series "Turbine Unit"

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Is a ventilation fan under the floor necessary?

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[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

[Revised Edition] Guide to Underfloor Measures That Must Be Checked and Addressed After Heavy Rain Disasters

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We have released the document 'Half a year of slacking vs. full operation in 3 months - Conditions for companies that should use initial setup support!'

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We have published a white paper titled "Half a Year of Procrastination vs. Full Operation in 3 Months - Conditions for Companies That Should Use Initial Setup Support," aimed at companies considering the introduction and operation of attendance management systems. This document clearly explains the key points of initial setup that are prone to difficulties during implementation, as well as the differences between handling it in-house and utilizing specialized support. If you want to smoothly launch an attendance management system, please take a look.

Jul 01, 2026

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Summer Grand Thanksgiving Festival 2026

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From July 2026 until the end of September, we will hold a Summer Grand Appreciation Festival! High-pressure washers at great prices! Plan 1: A special set of SP60L/60new/60DX/60GE comes with a free Z swivel joint set! Plan 2: Customers who purchase a compressor will receive a new red hose (30m) for free! Plan 3: Washing hose [6M] available at a special price! A wide range of popular high-pressure washer series, cleaning accessories, painting machines, compressors, and other products are also available! Items listed can be purchased at great deals! Don't miss this opportunity!

Jul 01, 2026

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Notice of Envu Ant Bait Certification Renewal

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Jul 01, 2026

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[Please be sure to introduce this to the management and general affairs department] Update on the introduction case of the attendance management system! With the thorough support of our sales representatives, you can rest assured about the configuration changes tailored to your regulations.

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An article has been published regarding the case of introducing the attendance management system "KING OF TIME" to G.C. Planning Co., Ltd. ~ In the case of G.C. Planning ~ The previous attendance management system had the challenge of making it difficult to check attendance in compliance with laws and regulations. The decision to implement was based on top-class implementation achievements and the unique support system of the agency, i Business Partners. Although there were moments that felt challenging during the implementation and operation, we resolved each issue by consulting with the sales representatives of iBP. [Case Overview] ■ Challenges before implementation - The previous attendance management system made it difficult to check attendance in compliance with laws and regulations. ■ Key points of implementation - Top-class implementation achievements and the unique support system of the agency, i Business Partners. *For more details, please refer to the related links or feel free to contact us.

Jun 30, 2026

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Chic Holdings Showcases Internal Communication Initiatives with TwooCa

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70% Adoption Achieved — Fostering Natural Workplace Connections in a Hybrid Work Environment* We have published a new customer success story featuring Chic Holdings Co., Ltd., showcasing how TwooCa is helping strengthen internal communication in the era of hybrid work. As hybrid work becomes the norm, many organizations are facing a common challenge: maintaining meaningful connections and spontaneous communication among employees. At Chic Holdings, TwooCa is being used to support initiatives such as company lunch gatherings and peer appreciation messages, creating more opportunities for employees to connect naturally across departments. Read the full customer story: https://prtimes.jp/main/html/rd/p/000000125.000076589.html Approximately 70% of the company's 49 employees actively use TwooCa (*According to Chic Holdings). The interview explores: The background behind the initiative How TwooCa has been integrated into employee engagement programs The positive impact on workplace communication and cross-department collaboration If you're exploring new approaches to employee engagement, workplace culture, or corporate wellbeing, we hope you'll find this case study valuable. #TwooCa #EmployeeEngagement #HybridWork #CorporateWellbeing #HRTech #WorkplaceCulture #DigitalTransformation #PeopleStrategy

Jun 30, 2026

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