What Happens on Installation Day

A step-by-step walkthrough of exactly how a Penntek polyurea floor coating gets installed — so there are zero surprises.

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The full installation takes most of a single working day for a standard 1–3 car garage. Larger spaces or those with significant damage may take two days. The floor is walkable within 4–6 hours of completion and ready for vehicles in 48 hours.
1
Day for most garages
3
Layers in the system
24hr
To light foot traffic
48hr
To drive on the floor

Step 1 — Arrival, Inspection, and Moisture Testing

Before any equipment is unloaded, the crew does a walkthrough of the space with you. This covers:

If moisture is high: We'll discuss options with you before proceeding. Depending on moisture levels, we may apply a moisture-mitigation primer, recommend delaying until conditions improve, or in severe cases, refer you to a waterproofing specialist. We won't coat over a moisture problem and leave you with a floor that blisters in a year.

Step 2 — Diamond Grinding

This is the most important step — and the one most budget installers skip or shortcut. Industrial diamond grinders with rotating diamond-tipped segments are run across the entire concrete surface. This accomplishes three things:

  1. Opens the concrete pores — creates a mechanical bond profile that coating grips permanently
  2. Removes surface contaminants — old sealers, oil penetration, laitance (the weak surface layer of concrete), and previous coatings are ground off
  3. Levels minor irregularities — light surface undulation gets evened out during the grinding pass
Why diamond grinding matters: Acid etching — the cheap alternative used by budget installers and DIY kits — creates a surface that looks prepared but has a fraction of the bond strength of diamond-ground concrete. The difference in coating longevity between properly ground and acid-etched surfaces is measured in years, not months.

Grinding produces significant concrete dust. The crew runs HEPA vacuum systems alongside the grinders to capture as much as possible, but expect some dust in the immediate area. This phase typically takes 1–3 hours depending on square footage and slab condition.

Step 3 — Crack and Pit Repair

Every crack and area of pitting identified during inspection is treated with Penntek's proprietary mender product. The mender is a flexible, polyurea-based filler that bonds to the surrounding concrete and cures hard enough to grind flush with the slab surface.

This is not the same as standard concrete patch or hydraulic cement. Those products are rigid, often shrink, and don't bond well with flexible coating systems. The Penntek mender is formulated specifically to work with the polyurea base coat applied over it.

A note on crack reappearance: Cracks in concrete are often structural — caused by soil movement, settling, or thermal expansion that's still occurring. A properly repaired and coated crack may re-crack over time if the underlying movement continues. This is covered under warranty for normal settling but is worth discussing if you have active, growing cracks.

Step 4 — Polyurea Base Coat

After grinding and repair, the Penntek polyurea base coat is applied. This is the structural heart of the system. Polyurea chemistry is fundamentally different from epoxy:

Step 5 — Decorative Flake Broadcast

While the polyurea base coat is still wet and tacky, the crew broadcasts Torginol decorative color flake across the surface. The technique matters here — a full broadcast means the entire floor is covered with chips, not a light scatter. This creates the dense, consistent appearance you see in professional installations.

The chips embed partially into the wet base coat, creating a textured surface. The texture provides natural slip resistance — important for a garage floor that may get wet from rain, snow melt, or vehicle drips.

There are 16 standard colors available in the Penntek/Torginol palette, plus custom blends at an upcharge. The color you selected when getting your quote is confirmed again at the start of installation day before any material is applied.

Step 6 — Cure, Scrape, and Vacuum

After the flake broadcast, the system is allowed to cure. Once the base coat has hardened with the flake locked in, the excess loose flake sitting on top — which did not embed — is scraped off with a floor scraper and vacuumed. This reveals the finished texture of the embedded chips and prepares a clean surface for the topcoat.

The scraping process is methodical — done in sections to ensure a uniform surface. Any areas with uneven flake coverage or thin spots in the base coat are addressed before topcoat is applied.

Step 7 — Polyaspartic Topcoat Seal

The final layer is the Penntek polyaspartic topcoat. Polyaspartic is a specific type of aliphatic polyurea engineered for:

The topcoat is applied evenly across the full surface and allowed to cure. This is the layer you see and interact with every day — the glossy, textured surface that makes the floor look finished.

Step 8 — Final Walkthrough

Before the crew leaves, they walk the completed floor with you. This covers:

You should feel comfortable asking questions during the walkthrough. The crew has done this hundreds of times and can answer anything about the system, the cure timeline, or long-term care. Don't hesitate to ask before they leave.

Return to Use — After Installation

ActivityMinimum Wait TimeNotes
Light foot traffic12 hoursSocks or soft-soled shoes recommended
Replace lightweight items24 hoursChairs, boxes, bikes
Drive vehicles on the surface48 hoursAdd 24 hrs if temps were below 50°F during install
Return heavy items72 hoursToolboxes, lifts, heavy shelving
Full chemical cure7 daysAvoid strong solvents until full cure

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