Why does oil contamination in Clawson garage concrete require MR-50 emulsifier treatment before polyurea-polyaspartic coating preparation?

Oil contamination requires MR-50 emulsifier treatment before grinding because petroleum penetrates the pore structure of concrete and cannot be removed by mechanical grinding alone. At the Highland Avenue property in Clawson, oil staining covered multiple zones and fluid had pooled along the crack zones across the 336-square-foot slab. Our crew applied MR-50 across the affected areas, worked the material in, and allowed full dwell time before vacuuming. Grinding over oil-saturated concrete opens the surface but leaves contamination within the pores. That contamination migrates upward over time and undermines coating adhesion. MotorCity Floors and Coatings applies MR-50 wherever oil contamination is present before any mechanical surface preparation begins.

Why does perimeter seam and void repair require a second diamond grinding pass before polyurea-polyaspartic garage floor coating in Clawson?

Perimeter seam and void repair requires a second grinding pass because mender compound cures above the surrounding surface and must be brought flush before coating. At the North Bywood Avenue property in Clawson, the concrete edge along the block foundation wall was rough across the full perimeter, and a threshold void remained where a 2x4 had been pulled from the slab. Our crew applied mender along the perimeter seam and into the void, then ran a full second grind across all 537 square feet after cure. This pass brought the repaired material flush with the surrounding slab. MotorCity Floors and Coatings performs a second grind whenever repair volume requires it.

Why does a worn painted coating on a garage floor require complete removal before a new polyurea-polyaspartic system is applied?

A worn painted coating requires complete removal before a new system is applied because adhesion failures in the existing material transfer directly to any coating applied over it. At the Massoit Road property in Clawson, a worn painted coating covered much of the 872-square-foot slab along with broad patches of efflorescence and mineral deposits. Our crew diamond-ground through the full painted surface until the concrete beneath was clean and free of the old material. Applying a new coating over a failing painted surface replicates the same adhesion failure within the new system. MotorCity Floors and Coatings removes all prior coatings completely before any polyurea-polyaspartic system is applied.

Why does a polyurea-polyaspartic coating warranty cover the coating system but not underlying structural crack movement?

A polyurea-polyaspartic warranty covers the coating system because it applies to materials and installation, not to the behavior of the concrete substrate beneath. At the Highland Avenue property in Clawson, heavy cracks ran in multiple directions across the 336-square-foot slab with exposed aggregate along the crack faces. Our crew filled each crack with mender compound and brought the surface flush before coating. The homeowner was informed before work began that the cracks are structural in nature and that movement in the underlying concrete is not covered by the warranty. The coating system itself is fully warranted. MotorCity Floors and Coatings discloses structural crack conditions to every homeowner before installation begins.

Polyurea Garage Floor Coatings in Clawson, MI

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Upgrading Garage Floor Coating in Clawson with Polyurea-Polyaspartic Coatings

On this page, we document 3 projects of garage floor coating in Clawson, MI. Our dual-coating systems have converted worn concrete slabs into durable, attractive garage floors. Clawson is an Oakland County city with established residential neighborhoods — compact lots, attached and detached garages, and a housing stock that spans decades of construction. Many of the concrete slabs we encounter in Clawson reflect that age, from garages built on newer pours to heavily weathered slabs showing the full effects of Michigan’s freeze-thaw cycles over many years.

Many of the properties where we apply our polyurea-polyaspartic floor coating systems had accumulated the wear and tear of the harsh Michigan climate. As you will see in these case studies, our garage floor coating specialists work with concrete slabs in a wide variety of conditions: some needed only standard surface preparation on new concrete. Others required extensive remediation — oil treatment, deep crack repair, full-slab pitting repair, and old coating removal — before the polyurea and polyaspartic coats could go down. We describe the process and results, and include the before-and-after photos for each job.

Clawson Garage Floor Coating Case Studies

These case studies carefully document the condition of the concrete slab, the challenges we encountered, and the steps our crew took to prepare and restore the concrete slab before applying the dual-layer system. Each project reflects a variety of conditions to be addressed, and shows the consistent quality standards MotorCity Floors and Coatings applies to every installation.

North Bywood Avenue

Highland Avenue

Massoit Rd

Quality Garage Floor Coatings

Winter road salt, freeze-thaw cycles, automotive fluids, and daily vehicle traffic degrade unprotected garage concrete over time. The damage typically appears as oil staining, cracking, surface pitting, and adhesion failure in previously coated floors.

Several of our jobs of garage floor coating in Clawson involved concrete with extensive crack and pitting damage that required multi-stage repair before any coating could proceed. At the Highland Avenue property, heavy cracks ran throughout the floor in multiple directions with exposed aggregate along the crack faces — one of the more damaged slabs our crew has encountered. Polyurea-polyaspartic systems provide reliable protection against these conditions and deliver an appearance that bare concrete or epoxy products cannot match.

NEW Garage Floor Coating
on North Bywood Ave.

North Bywood Ave., Clawson, MI

The Starting Point

Our crew arrived at this 537-square-foot garage to find new concrete in an unfinished space. The walls were open stud framing — construction was still underway. The slab itself showed conditions common to new builds: construction debris, dirt contamination, and fluid pooling near the plumbing rough-in zone. The concrete had been poured directly against the block foundation wall. Where the framing met the slab along the perimeter, the concrete edge was rough and uneven. A void ran across the threshold where a 2×4 had been pulled from the slab. No steps and no vertical surfaces were included in the scope.

Surface Preparation

New concrete requires mechanical profiling before any coating system can bond. Our crew diamond-ground the full 537 square feet to remove the laitance layer and open the surface of the concrete. The grinding exposed the full extent of the perimeter seam condition and the threshold void. Our team vacuumed thoroughly after each pass. The slab came out of preparation clean, profiled, and ready for repair.

Seam and Void Repair

The perimeter condition required focused attention. Where the concrete met the block foundation wall, the edge was rough and uneven. Our crew applied mender compound along the full perimeter seam and feathered it flush with the surrounding slab. The threshold void — left where a 2×4 had been pulled from the concrete — received a targeted mender application. Our team filled the void and brought the material level with the surrounding surface. Our crew allowed full cure time before moving to the second grind.

Second Grind

After the mender cured, our crew ran a second pass across all 537 square feet. This pass brought the repaired seams and the filled void flush with the rest of the slab. The floor came out of this phase level and consistent from edge to edge. No raised material or rough transitions remained.

The Coating System

The homeowner selected Domino — a dark charcoal blend with fine white and grey chips throughout. Our crew applied the MC-3.8 polyurea-polyaspartic coating system across the prepared 537 square feet. Our team broadcast Domino flake into the wet base coat across the full floor. They then applied the clear topcoat with 16-grit traction additive to lock in the flakes and seal the surface throughout. The coating runs wall to wall with no steps or vertical transitions.

The Result

The finished floor on North Bywood Avenue is a sharp contrast to the raw construction slab our crew found on arrival. Domino runs wall to wall across all 537 square feet. The deep charcoal tone reads cleanly against the bare framing walls and gives the unfinished space a grounded, finished character. The perimeter seams and threshold void are gone — the surface is level and continuous from edge to edge. The 16-grit traction provides firm grip underfoot. The floor is sealed, protected, and ready for years of use.

Testimonials - What other clients say

Chris Arvanites

I love my NEW garage….should have done the floors years ago. Nick was awesome and they got me scheduled a lot faster than I expected! Brad and the crew were efficient and friendly. I’m super happy. Have already told some friends.

Dan Jewell

We love our floors. We had our garage & our front & back porch done. It is beautiful. Everyone who see it, admire it and ask who did the job. It was a great experience from Nick our salesman and the crews that installed the flooring. A very professional group of people. We would recommend them to anyone.

NEW Garage Floor Coating
on Highland Ave.