TOYOKOH Inc.
341A・Growth Market・Construction
TOYOKOH Inc.
341A・Growth Market・Construction
SOSEI Business
Construction service business using a proprietary method for roof renovation of aging factories and warehouses
| Period | Current | Previous | Change |
|---|---|---|---|
| Net sales (FY2026 (ending March 2026) full year) | ¥1,783 million | ¥1,603 million | ↑ |
| Segment profit (FY2026 (ending March 2026) full year) | ¥630 million | ¥571 million | ↑ |
| Net sales YoY change rate (FY2026 (ending March 2026) full year) | +11.3% | — | ↑ |
| Segment profit YoY change rate (FY2026 (ending March 2026) full year) | +10.2% | — | ↑ |
| Net sales (FY2027 (ending March 2027) full-year forecast) | ¥1,900 million | ¥1,783 million | ↑ |
| Segment profit (FY2027 (ending March 2027) full-year forecast) | ¥656 million | ¥630 million | ↑ |
Business Details
A business that provides construction services to factory and warehouse owners using the SOSEI Method (Patent No. 7332142, No. 6815548), which reinforces aging slate roofs by spraying a special instant-curing resin. Manufacturing companies in the automotive, machinery, and steel industries are the main customers. The first layer of urethane foam reduces attic temperatures in summer by up to approximately 20°C, which also serves as an appeal point for energy conservation and decarbonization. Repeat orders from existing customers account for the majority of sales, forming a stable order base.
Recent Overview
Both net sales and profit increased due to contributions from large-scale renovation projects in the automotive, machinery, and steel industries
In the full year of FY2026 (ending March 2026), the SOSEI Business achieved net sales of ¥1,783 million (up 11.3% year on year) and segment profit of ¥630 million (up 10.2% year on year), driven by contributions from large-scale renovation projects at domestic factories in the automotive, machinery, and steel industries. From FY2027 (ending March 2027), the company plans to launch a new business that enables solar panel installation on slate roofs—previously considered unsuitable for solar panels due to insufficient strength—by first applying the SOSEI Method and then installing fixtures using a patent-pending special method. Net sales are expected to reach ¥1,900 million (up 6.5% year on year) and segment profit ¥656 million (up 4.1% year on year).
Key Products
Growth Drivers
- Continued expansion of roof renovation needs due to the aging of domestic manufacturing production facilities
- A stable order base supported by repeat orders from existing customers
- Continued contribution from large-scale renovation projects in the automotive, machinery, and steel industries, among others
- Development of new customers through appeal of insulation effects amid decarbonization and energy-saving demand
- Sales expansion through a new business (solar panel installation, planned to launch in FY2027 (ending March 2027)) that enables solar panel installation on roofs after SOSEI Method construction
- Strengthening of the construction system through collaboration with sales partner companies and construction partner companies
Risks
- Risk of hiring delays and construction progress delays due to the shortage of young workers, a common issue across the construction industry
- Risk of sales fluctuation upon customer attrition due to a revenue structure with high dependence on existing customers
- Risk of cost increases due to soaring prices of resources, energy, and raw materials
- Risk of fluctuation in sales recognition timing due to shifts in the completion timing of large-scale projects
- Risks related to initial costs, technology, and market development associated with launching the new business (solar panel installation)
Last updated: June 22, 2026