Sealing Worker (Waterproofing Work)
しーりんぐこう（ぼうすいこうじ）
Industry & Occupation
Classification
Summary
Specialist who fills sealing materials into building joints and gaps to prevent intrusion of rainwater and moisture.
Description
Sealing workers fill and finish sealing materials into joints, seams, and gaps around sashes in the exterior and interior of buildings to ensure waterproofing and airtightness. Work is often performed on scaffolding or at heights, and they handle the entire process from surface cleaning, primer application, masking, caulking with a sealing gun, smoothing with trowels or brushes, to curing management. Since construction quality directly impacts the building's waterproof performance, understanding material properties, strict adherence to procedures, and safety and health management are required. They collaborate with other trades such as carpenters, plasterers, and painters.
Future Outlook
Stable demand is expected due to the lengthening lifespan of buildings and increasing renovation needs. As waterproofing and sealing technologies evolve, specialization will increase, and the market value of those with skills certifications is expected to rise.
Personality Traits
Dexterous with hands and good at detailed work / Good team player / Meticulous / Patient
Work Style
Direct to/from Work / Full-time / On-site Work / Outdoor High-Altitude Work / Team Work
Career Path
Apprentice Sealing Worker → Sealing Worker → Senior Sealing Worker → Construction Manager → Site Supervisor
Required Skills
Brush Finishing / Primer Application / Scaffolding Work / Sealing Construction / Understanding of Sealing Material Properties
Recommended Skills
Operation of High-Place Work Vehicles and Gondolas / Reading Architectural Drawings / Safety and Health Management / Waterproofing Work
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Adaptability | Requires selecting materials and construction methods according to weather and site conditions. |
| Attention to Detail & Accuracy | Dimensional accuracy such as joint width and depth directly affects quality. |
| Physical Stamina & Endurance | Requires physical strength for work on scaffolding or at heights, and prolonged standing. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | Primarily follows specifications in construction, with little need for original ideas. |
| Numerical & Quantitative Analysis | Only basic calculations such as dimension measurement are needed. |
Related Qualifications
- Architectural Construction Management Technician
- Sealing Construction Skills Technician (Grades 1–3)
Aliases
- Seal Worker
- Sealing Artisan
Related Jobs
- Painter
- Plasterer
- Tile Layer
- Waterproofing Worker