48-Hour Epoxy Installation at Magna: How We Coated 14,000 Square Feet in Four Consecutive Weekends
A tier-1 automotive supplier needed 14,000 sqft of white epoxy and 4,000 sqft of stained polished concrete installed without disrupting production. Here's how we delivered on a 48-hour weekend-only schedule.
The Brief: Zero Downtime in an Active Assembly Facility
When Magna approached us about coating 14,000 square feet of assembly line aisles and walkways in their Michigan facility, the requirement was non-negotiable: the floor had to be ready for production by 6 AM Monday morning. The facility runs continuous shifts Monday through Friday. Downtime wasn’t an option.
The scope included two separate projects:
- 14,000 sqft of 3-coat white epoxy system across assembly line aisles and high-traffic walkways
- 4,000 sqft of stained polished concrete in adjoining production areas
- Safety line striping throughout both zones after completion
Most contractors would have pushed back on the timeline or requested a production shutdown. We took a different approach: we built a real-world test to prove we could execute the work in the window they needed.
Doing Our Homework: The Sample Test
Before we committed to the schedule, we ran a full-scale mock installation on a section of the facility floor during a prior weekend. We prepped the surface, applied the solvent-based epoxy primer, installed the 100% solids epoxy body coat, and applied the satin urethane topcoat using the exact same products, crew size, and timeline we’d use for the live installation.
Then we tested it. We ran wear testing and pull testing on the cured system to verify adhesion and durability under the facility’s actual traffic conditions. The system passed. That gave Magna confidence that we weren’t guessing at the timeline, and it gave us the data we needed to refine the execution plan.
If you can’t prove it works in a controlled test, you have no business attempting it under a production deadline.
The System: Fast-Cure Primer, 100% Solids Epoxy, Satin Urethane Topcoat
For a compressed timeline like this, product selection is everything. You can’t use a standard water-based epoxy primer with a 24-hour cure window and expect to make a Monday morning shift start. The system we used was designed specifically for fast turnaround:
Solvent-based epoxy primer with a short cure time. This gave us adhesion to the prepared concrete and allowed us to apply the body coat within hours, not the next day.
100% solids epoxy body coat in bright white. No VOCs, no shrinkage, and a thick enough build to create a durable, uniform surface in a single pass. This is the workhorse layer of the system — the one that takes the impact, the chemical exposure, and the daily forklift traffic.
High-wear satin urethane topcoat for abrasion resistance and a cleanable finish. We applied this on Sunday morning after the epoxy had cured overnight, giving the topcoat 12+ hours to cure before the facility went live Monday at 6 AM.
The finish had to be satin, not high-gloss. Assembly line workers need traction, and a gloss topcoat in a manufacturing environment creates slip hazards and glare under overhead lighting. Satin delivers the durability without the safety trade-offs.
The Execution: 16-Hour Shifts, 4-Man Crew, 5,000 Sqft per Weekend
The coating project ran over four consecutive weekends. Each weekend followed the same cadence:
Saturday 6 AM – Saturday 10 PM: Prep, prime, and coat
We started each shift with surface preparation — grinding to remove surface contaminants, patching any spalls or joint deterioration, and vacuuming to ensure a clean substrate. Once the surface was ready, we applied the solvent-based primer, allowed it to tack up, and then rolled out the 100% solids epoxy body coat.
A 4-man crew working a 16-hour shift can cover approximately 5,000 square feet with this system. That’s not a theoretical estimate — that’s what we verified during the sample test and repeated across all four weekends.
Saturday 10 PM – Sunday 8 AM: Cure window
The epoxy cured overnight. We didn’t touch it. The facility stayed locked down, climate-controlled, and free of foot traffic. By Sunday morning, the epoxy had reached sufficient hardness for topcoat application.
Sunday 8 AM – Sunday 12 PM: Topcoat application
We applied the satin urethane topcoat and then stepped out. The topcoat needed 12+ hours to cure before resuming forklift and foot traffic. That put us at midnight Sunday or later — well ahead of the Monday 6 AM production shift.
Monday 6 AM: Floor goes live
The line started on time. Every time.
The Polished Concrete Project: A Separate 4,000 Sqft Job
In parallel with the epoxy installation, we completed a 4,000 sqft stained polished concrete project in adjoining production areas. This work followed a similar weekend-only schedule but required different sequencing:
- Grinding and polishing to the specified grit level
- Application of concrete stain for decorative color
- Final polishing and sealing
Polished concrete doesn’t have the same cure-time constraints as coatings, but it does require extended equipment access and generates significant dust. Running this work on weekends kept it out of the way of active assembly operations and allowed us to control the environment.
Once both the epoxy and polished concrete projects were complete, we returned to install epoxy safety line striping throughout the facility. Line striping in a manufacturing environment isn’t cosmetic — it’s part of the safety infrastructure. Clean, durable lines that won’t wear off under forklift traffic are essential for maintaining aisle discipline and pedestrian zones.
Why the Approach Worked
Three factors made this project successful:
1. The sample test gave us certainty.
We didn’t guess at the timeline or assume the products would perform. We tested the full system under real conditions and validated the execution plan before committing to the live installation. That eliminated surprises.
2. Product selection matched the timeline.
A fast-cure solvent-based primer and a 100% solids epoxy body coat are more expensive than slower-curing alternatives, but they’re the only products that make a 48-hour turnaround viable. Trying to save money on materials would have cost Magna days of downtime.
3. Crew discipline and sequencing were non-negotiable.
A 16-hour shift is long, and there’s no room for mistakes. Surface prep has to be done right the first time. Primer application has to be timed correctly to avoid over-cure or under-cure before the body coat goes down. Topcoat application has to happen early enough Sunday morning to allow full cure before Monday’s shift. Miss any of those windows and the timeline collapses.
The Result: Four Weekends, 14,000 Sqft, Zero Production Delays
The floor has been in service for months now. It’s holding up to daily forklift traffic, assembly line operations, and the wear you’d expect in a tier-1 automotive manufacturing facility. The white epoxy stays clean, the satin urethane topcoat is wearing evenly, and the safety lines are still sharp.
More importantly, Magna didn’t lose a single production hour. That was the requirement, and that’s what we delivered.
When Fast Turnaround Makes Sense (and When It Doesn’t)
This execution model works well for facilities that can’t afford downtime but can grant access during off-hours or weekends. It’s the right approach when:
- The facility operates continuous shifts and shutting down production for a week isn’t an option
- The scope is large enough to justify the premium for fast-cure products and extended crew hours
- The client has realistic expectations about sequencing and can commit to keeping the space locked down during cure windows
It’s not the right approach when:
- The facility has moisture issues or substrate problems that require extended remediation before coating
- The client wants to save money by using slower-curing, lower-cost products (you can’t have both speed and budget pricing)
- The environment isn’t climate-controlled (temperature swings during cure will compromise the system)
If the conditions are right, a weekend-only installation schedule can deliver the same quality and durability as a traditional shutdown — it just requires more planning, better products, and a crew that knows how to execute under time pressure.
We Do Our Homework Before We Commit
The Magna project is a good example of how we approach high-stakes installations. We don’t tell clients “yes” until we’ve verified we can deliver. The sample test wasn’t just for Magna’s benefit — it was for ours. We needed to know the timeline was achievable before we put our name on it.
If you’re managing a facility that needs coating work but can’t afford production downtime, we’re available for consultation and sample testing. We work across Southeast Michigan and will travel for the right project. Reach out at sales@aceindustrialsolutions.net and we’ll walk through whether a fast-turnaround approach makes sense for your scope.