Polyurea is a plural-component elastomer, sprayed hot at a fixed mix ratio, that cures in seconds to minutes. It suits water and wastewater tanks, containment, decks and roofs that hold water or must return to service fast. It is the right call when the shutdown window is tight and the surface flexes, provided the substrate is blasted or ground to spec first.
Polyurea coatings cure in seconds to minutes, not hours, letting us return parking decks, plazas, and walkways to service faster than any other coating system. Once cured, polyurea resists abrasion, chemicals, and UV exposure better than most alternatives.
We apply pedestrian and vehicular-grade polyurea systems on parking structures, plaza decks, and traffic-bearing surfaces, matching texture and slip resistance to the surface’s use.
From wastewater tanks to factory floors, polyurea goes where a surface has to stay sealed under traffic, moisture or chemical splash.
Public water systems, transportation structures and municipal buildings get a coating built to keep them in service.
Tanks, pipes and equipment are guarded against corrosion and abrasion, and the fast cure keeps downtime short.
Polyurea reinforces armored vehicles, critical buildings and ballistic plates against extreme conditions.
On new builds, polyurea seals foundations and coats floors to extend the life of the structure.
Plant floors and machinery are protected against wear, and the coating helps reduce vibration in equipment.
Boats, docks and marine structures are waterproofed and shielded from corrosion.
Polyurea earns its place where water stands, traffic returns fast or the shutdown window is short.
Tank rims, lids and walls stay wet for most of their working life. Strong restored a 500,000-gallon tank rim at South Platte Renew and two tanks at Centennial Water & Sanitation.
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Sprayed across the deck, polyurea keeps water out of the structure below and flexes as the bridge moves under traffic.
Plaza decks get the same liquid-applied waterproofing as basement walls and foundations below grade.
Learn MorePolyurea bonds to four common substrates. Here is what it does on each.
Steel tanks, rims, brackets and structures get a coating that resists rust and wear. The blast profile sets how well it holds.
Concrete decks, walls and containment areas are repaired and profiled first, and the cured coating flexes over small cracks as the slab moves.
Polyurea seals wood in a single continuous layer that bends as the wood swells and shrinks.
Over spray foam insulation, polyurea forms a hard outer shell that shields the foam, as on the tank lids at Centennial Water & Sanitation.
Polyurea’s fast cure time is an advantage only if the surface prep and application are done right — rushed prep is the most common cause of early delamination. We grind, prime, and moisture-test every surface before application, regardless of the tight schedule.
That discipline is what keeps our polyurea decks performing for years of heavy traffic, not months.
Polyurea sets in seconds, which leaves no time to fix a bad surface mid-spray. Each step below has to check out before the next one starts.
| Spec | Typical Value |
|---|---|
| Chemistry | Isocyanate (A-side) and resin blend (B-side), plural-component |
| Cure | Gels in seconds; cures in seconds to minutes |
| Application | Heated plural-component spray rig at a fixed mix ratio |
| Substrates | Steel, concrete, wood and spray foam |
| Steel prep | Abrasive blast, up to SSPC-SP 10 near-white where specified |
| UV exposure | Aromatic as a base coat; aliphatic topcoat for sun and color stability |
| Film build | Typical: 40 to 80+ mils, set by service condition |
| Return to service | Typical: foot traffic within hours; full service per product data |
Polyurea pricing depends less on the material than on what it takes to prepare the surface and fit the work into your shutdown.
A brush-off blast and a near-white blast on corroded steel are very different scopes. Concrete repair, crack treatment and moisture mitigation add time as well.
Tank rims, lids and tight interiors may need rigging, ventilation, angled blast nozzles and smaller spray guns, all of which slow production.
Immersion and containment service call for more mils than a deck. An aliphatic topcoat for UV exposure adds a second material and a second pass.
Fitting the work into a holiday weekend or around-the-clock shifts keeps your asset offline for less time, but it changes crew planning and labor cost.
Cold-season work may need a heated enclosure to hold the substrate and air within the product's application limits.
| Polyurea Coatings | Epoxy & Protective Coatings | Polyurethane Coatings | ||
|---|---|---|---|---|
| Cure speed | Seconds to minutes | Hours; full cure takes days | Hours; varies by product | |
| Flexibility | High elongation, bridges movement | Hard and rigid | Flexible to semi-rigid | |
| Build per pass | High build in one pass | Moderate; often several coats | Thin film per coat | |
| Sunlight | Aliphatic grades stable; aromatic needs a topcoat | Chalks without a topcoat | Aliphatic grades hold color | |
| Equipment | Heated plural-component rig | Brush, roller or spray | Brush, roller or spray | |
| Typical job | Tanks, containment, fast turnarounds | Floors, linings, primers | UV topcoats, exposed steel, roofs | |
Strong Contractors takes on spray foam, coating, and ballast removal projects outside Colorado, bringing our own crews, equipment, and project management to the job. Before we bid an out-of-state project, we confirm that state’s licensing, registration, and permit requirements so the work moves forward cleanly.
Polyurea gels within seconds and cures in seconds to minutes after it leaves the gun. Light foot traffic is often possible within hours, while full chemical or immersion service follows the product’s published cure schedule. That speed is why fast-setting polyurea was the choice at South Platte Renew, where a 500,000-gallon wastewater tank rim was restored in 36 straight hours over the Fourth of July weekend.
Polyurea is usually the better fit when the tank moves, the shutdown is short or the coating has to build thickness fast. It stretches to bridge small cracks and returns to service quickly, which suits tanks that expand and contract. Epoxy is harder and is often the better primer or the right lining for certain chemicals. We base the choice on the service conditions and the manufacturer’s resistance data.
Yes, when surface and air conditions can be controlled. Polyurea tolerates cold better than many coatings, but the substrate must stay dry and above the dew point while it is sprayed. On one of the two 500,000-gallon tanks at Centennial Water & Sanitation, we built a heated tent around the tank so work could continue through the winter months.
Aromatic polyurea costs less and works well as a base coat, but it discolors and chalks in sunlight. Aliphatic polyurea resists UV and holds its color, so it is used where the coating stays exposed. Many exterior systems pair the two: an aromatic build coat for protection, then an aliphatic topcoat for weathering.
Yes. Polyurea is a common protective skin over spray polyurethane foam on tank lids and roofs. At Centennial Water & Sanitation, we applied 3.5 inches of spray foam to the tank lids to meet an R-21 insulation requirement, then coated the foam with polyurea and broadcast granules into it for a durable, weather-resistant finish.
Most early failures trace back to the surface, not the product. Contamination, moisture, a shallow blast profile or a skipped primer can all break the bond, and a fast cure leaves no time to fix mistakes mid-spray. Off-ratio mixing from poorly maintained equipment is another cause. Careful prep, calibrated equipment and checks during application prevent most of them.
Strong works with coating manufacturers including PPG, The Versa Flex Companies and Rhino Linings Protective Coatings. On difficult jobs we bring the manufacturer in early. At South Platte Renew, the application plan was developed with a PPG coating specialist to meet a tight deadline, and the finished work passed all inspections.
