Construction process

Please Verify the ARC-FLASH Photocatalyst Technician Certificate
All technicians from our company wear official ARC-FLASH Photocatalyst uniforms and caps for easy identification.
Standard Service Workflow
- Site Assessment & Formaldehyde Testing
↓ - Issue Identification & Explanation
↓ - Material Sampling & Confirmation
↓ - Preparation & Conditioning Phase
↓ - Spray Application
↓ - Final Touch-Up + Client Inspection + Formaldehyde Retesting
↓ - Delivery of Service Warranty & Certification
Step 1: Site Assessment & Formaldehyde Testing

Our ARC-FLASH Photocatalyst technician will first assess the environment of your residence to plan the most suitable application method and sequence.
During the site inspection, the technician will evaluate factors that may affect the photocatalyst’s performance and proactively point out any issues observed in the space. Formaldehyde testing will also be conducted at two designated points—both before and after the application—to provide you with transparent and reliable data.
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Step 2: Issue Identification & Explanation

The technician will clearly explain the application method, important precautions during the process, and the estimated time required for completion. They will also offer recommendations on how to maximize the effectiveness of the ARC-FLASH photocatalyst treatment.
During this stage, you are welcome to ask any questions regarding the photocatalyst. Our technician will be happy to provide thorough and detailed answers to ensure your full understanding.
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Step 3: Material Testing & Confirmation

For all interior finishes and surface materials within the treatment area, the technician must confirm with the client the expected appearance after application—including color, texture, and sheen. Photocatalyst treatment will only proceed once the client has given explicit approval for each surface.
Note: Application is not recommended on certain surfaces such as clear glass, mirrors, high-gloss lacquered furniture, electronic devices, or objects with smooth finishes. However, if the client specifically requests treatment on these items, the technician will proceed in accordance with the client’s instructions.)
Step 4: Surface Protection with Yosai® Taping


To ensure a clean and precise application, our technicians use Yosai® protective tape, a trusted Japanese brand known for its durability and residue-free removal. All untreated areas—including furniture, decorative surfaces, and flooring—will be carefully shielded using protective tape or masking cloth to prevent overspray and maintain their original appearance.
Special care is taken with flooring materials such as polished quartz tiles, ceramic tiles, and beech wood floors. These surfaces will be covered to preserve their texture, gloss, and integrity throughout the photocatalyst treatment process.
Step 5: Photocatalyst Spray Application

The primary treatment areas include: ceilings, all four walls, cabinets (including inner drawers), carpets, and curtains.
Step 6: Final Touch-Up & Completion

All moved furniture and items will be returned to their original positions. Protective tape and masking cloth will be gently removed to prevent dust from dispersing into the air. Any waste generated during the application process will be collected and transported back to our facility for proper disposal in accordance with waste management protocols.
The homeowner will then inspect the completed work. Our technician will also remeasure formaldehyde levels at the two previously tested points to provide a clear before-and-after comparison.
Post-Treatment Notes :
Surface Care After Application:
The photocatalyst is applied via spray, which may produce residual dust during the process. The coating reaches its maximum hardness within 10 to 14 days.
- For vertical surfaces, gently wipe with a soft cloth or use a duster to remove excess dust.
- For horizontal surfaces, a damp cloth can be used for cleaning.
Optimizing Photocatalyst Performance:
The photocatalyst works by breaking down airborne chemical odors (such as formaldehyde or new renovation smells) using light energy and circulating air.
- In areas with heavy odors or poor lighting, it is recommended to ventilate the space first to remove accumulated chemical gases.
- Once air quality improves, windows can be partially closed.
- In low-light environments, UV blacklight sources can be used to enhance the photocatalyst’s effectiveness
