Case Study: Commercial Interior Painting for Costco in Union Gap, WA
CertaPro Painters® of Central Washington, WA
Efficient Multi-Substrate Painting for Retail Spaces
In the summer of 2025, CertaPro Painters® of Central Washington completed a multi-week commercial painting project at a Costco in Union Gap, WA. The goal was to refresh multiple interior surfaces while maintaining a safe and uninterrupted shopping experience for customers. Our team worked during overnight hours, from 10 PM to 4 AM, to avoid disrupting store operations while efficiently painting high-traffic and hard-to-reach areas. The project required painting various substrates, including metal posts, break rooms, electrical boxes, trash compactors, aisle dividers, and cardboard balers, all while maintaining a clean and professional finish. Our crew leveraged their expertise in working with different materials and tight schedules to complete the project efficiently. The finished results provided Costco with a revitalized interior that was visually appealing, durable, and completed with minimal disruption to daily operations.


Project Overview
Location: Union Gap, WA
Project Date: Summer 2025
Project Duration: Several weeks (scheduled around store hours)
Project Type: Commercial – Interior Painting
Scope of Work:
Painting multiple interior substrates including metal posts, aisle dividers, electrical boxes, break rooms, trash compactors, and cardboard balers
Working exclusively during overnight hours to avoid disrupting retail operations
Ensuring consistent coverage and professional finish across different materials and surfaces
Challenges Addressed:
Coordinating work around Costco’s operating schedule
Painting diverse substrates requiring different techniques and coatings
Completing work efficiently while maintaining a clean and safe environment
Products & Techniques Used:
Specialized paints suitable for metal, drywall, and high-traffic surfaces
Standard and custom techniques to ensure adhesion and finish quality
Overnight scheduling and workflow planning to maximize efficiency
Results:
The project delivered a refreshed, professionally painted interior that improved the store’s appearance and durability. By working around the client’s schedule, the CertaPro team ensured zero disruption to shoppers and employees. The project demonstrates our ability to manage complex commercial painting projects that involve multiple surfaces, tight timelines, and challenging logistics. Costco now enjoys a visually cohesive, long-lasting interior finish that meets the high standards expected in retail environments.
Before Images
Below are images of the project before we started. Click to enlarge.
Time For A Change?
Ready to transform your space with our professional painting & carpentry services? Contact CertaPro Painters of Central Washington today to discuss your project and schedule a consultation. We look forward to bringing beauty and craftsmanship to your home or business.
After Images
Below are images of the project after we finished. Click to enlarge.
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