Seamless Clean Room Flooring for Portland Facilities
ISO-rated clean rooms live or fail on particle control. The floor is part of that budget. Portland Concrete installs seamless epoxy and urethane systems engineered to stay below the particle-shed threshold your ISO class requires, with verified off-gas chemistry and ESD grounding where the process demands it. We start every project with a free written estimate and a clear schedule.
Every ISO clean room operates within a particle budget. The air handling system removes particles, but the floor contributes them. A standard concrete slab sheds microscopic particles under foot traffic and equipment movement. A sealed clean room floor system holds those particles in place, keeping the room's particle count within spec.
We install smooth seamless systems with the surface finish matched to your ISO class, chemistry that does not off-gas at operating temperature, and grounding resistance in the range your process requires. The install follows clean room discipline: contained prep to avoid cross-contamination, sealed transitions at every wall and penetration, post-install particle verification before handoff.
We identify the target ISO class, the particle contribution budget the floor must stay within, any ESD or grounding requirements, and the off-gas limits for your process chemistry. Material selection follows directly from this spec.
Prepare slab in controlled conditions
The concrete slab is prepped using HEPA-filtered or sealed methods to prevent contamination of adjacent spaces, ground to the system's profile, and any cracks filled with clean-room-rated repair materials.
Apply seamless coating system
The epoxy or urethane system is applied as a continuous seamless layer across the room footprint, with the topcoat formulation matched to the off-gas and particle-shed requirements your process specifies.
Test and document for commissioning
After cure, particle count testing confirms the floor's contribution is within budget, ESD testing (if required) verifies the resistance range, and all documentation is packaged for your clean room commissioning file.
Critical detail
Transitions Are the Failure Point in Clean Room Flooring
A perfect seamless floor across the room footprint can fail at the transitions. The doorway to a non-clean space, the wall-floor junction, the pipe or cable penetrations, the equipment pad edges. We detail every transition with seamless cove base, sealed penetrations, and integrated door frames so the floor's clean integrity extends all the way to the room boundary.
ISO class selection, particle budgets, off-gas chemistry, and transition details.
Multiple classes from less strict to more strict, with the floor system spec matched to the class. We confirm the target class up front and select the matched system; higher classes require lower-particulate materials and stricter install discipline.
Yes, significantly. A standard floor sheds particles continuously; a properly specified clean-room floor contributes far less. In an ISO-rated environment, every surface counts toward the particle budget.
Floor systems can off-gas trace chemistry that contaminates sensitive processes. We use chemistry rated for low off-gas in clean room applications, verified by the manufacturer for your specific class requirement.
Yes, transitions are where most clean room floors fail. We detail every transition (wall, door, penetration) with seamless cove and sealed integration so the floor's clean integrity holds at the room boundary.
Per room, typically a week or more depending on size and ISO class. The cure window before clean room commissioning adds additional time. The full schedule is in the quote and built around your commissioning calendar.
Client feedback
What Portland Operations Teams Say About Their Clean Room Floors
ISO-class verified at commissioning with our floor as part of the particle budget. Hit class, room ran first try. The seamless transition detail at the door made the difference.
Z. J5
Clean Room Operations, Portland
★★★★★
Off-gas verification on the floor chemistry for our sensitive process. No detectable contamination at the production analytical limit. Spec matched the process requirement exactly.
Y. J5
Process Engineer, Vancouver
★★★★★
Multiple clean rooms across our facility, each at different ISO classes. They specced per room rather than one system everywhere; class targets hit in every room first commissioning.
Q. J5
Facility Engineer, Hillsboro
★★★★★
Documentation package supported the validation file. Material specs, install method, particle verification all included. Auditor signed off without revisions.
X. J5
Validation Lead, Gresham
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Share your ISO class target, room dimensions, and commissioning timeline, and we will specify the matched system and send a written quote within one business day.
