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PROTECTING YOUR WORLD

Industrial Coatings
for Plants, Floors
& Equipment

Polyurea, epoxy, polyurethane and polyaspartic systems compared for industrial facilities: what each chemistry is good at, where it fails, and how to specify a coating that survives your process.
Industrial Coating Quotes

Floors, tanks, steel or equipment? Get the right system.

Tell us the surface, the size and what it is exposed to. We will connect you with a certified applicator who can inspect and quote the work.

  • Surface type and square footage
  • Chemicals, abrasion, heat or immersion
  • Current coating and condition
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1989
Year we started making coatings in Springfield, MO
ArmorThane
100%
Solids in spray polyurea: near-zero VOCs
Product data sheets
Seconds
Gel time of fast-set spray polyurea
Product data sheets
Hours
Typical return to service vs. days for epoxy
Product data sheets

Industrial coatings do a job, not a look. They keep steel from corroding, keep concrete from dissolving under chemicals, keep floors from wearing through, keep tanks from leaking and keep equipment running between shutdowns. The right one depends on what the surface faces every day: chemicals, abrasion, impact, immersion, heat, UV and how long you can afford to be shut down. This page compares the main industrial coating chemistries and shows where spray polyurea earns its place.

Quick answer

For most industrial work there is no single best coating. Epoxies give excellent adhesion and chemical resistance but are rigid and slow to cure. Polyurethanes and polyaspartics give UV-stable, tough topcoats. Spray polyurea gives a thick, seamless, flexible membrane that cures in seconds and returns to service in hours, which makes it the go-to for linings, secondary containment, impact and abrasion areas and jobs with tight shutdown windows. Many industrial specs combine them: epoxy or zinc primer, polyurea body coat, aliphatic topcoat.

Start here

What industrial coatings actually do

Industrial coatings are grouped by the job they perform rather than the chemistry. Most facilities need several of these at once, and the same plant may use four different systems in four areas.

Protect

Corrosion protection

Barrier and sacrificial systems for structural steel, piping, tanks and equipment. See corrosion protection coatings.

Contain

Linings and containment

Tank linings, sumps, trenches and bund walls that hold chemicals, fuel or wastewater. See secondary containment.

Wear

Abrasion and impact

Chutes, hoppers, truck bodies, loading docks and floors where thin coatings chip and wear through.

Floors

Industrial flooring

Forklift traffic, hot tire pickup, chemical spills and thermal shock. See industrial flooring.

Water

Waterproofing

Roofs, decks, foundations and below-grade concrete. See polyurea waterproofing.

Safety

Safety and marking

Non-slip surfaces, line striping, color coding and high-visibility finishes.

Compare

Industrial coating chemistries compared

Values are typical ranges; the product data sheet always governs.

ChemistryStrengthsWeaknessesTypical filmReturn to serviceCommon uses
EpoxyStrong adhesion, broad chemical resistance, low cost per milRigid, can crack with movement; slow cure; chalks and yellows in sunlight4–20 mils per coat; thicker for mortarsAbout 1–7 daysPrimers, floors, tank linings, intermediate coats
Novolac epoxyHigher acid, solvent and temperature resistanceBrittle, needs careful application10–20+ milsDaysSevere chemical containment, acid areas
PolyurethaneTough, abrasion resistant, UV-stable (aliphatic), good glossMoisture sensitive during cure, thinner films2–5 mils topcoatHours to a dayTopcoats on steel and floors
PolyasparticFast cure, UV-stable, clear or pigmented, good abrasionShort pot life, needs skilled crews5–15 mils per coatHoursFloors, fast-turn topcoats, equipment
Spray polyureaThick seamless film in one visit, high elongation, impact and abrasion resistance, cures in secondsNeeds plural-component equipment; aromatic grades darken in sun; temperature limits20–125+ mils in multiple passesMinutes to walk on; hours to serviceLinings, containment, truck and trailer, roofs, wear areas
Polyurea hybridLower cost than pure polyurea, fast setMore sensitive to moisture and temperature; lower chemical resistance than pure polyurea20–125+ milsMinutes to hoursSecondary containment, liners, budget-driven work
Zinc-richGalvanic protection of steelNeeds a topcoat in most exposures2–4 milsHoursPrimer for structural steel
Typical values compiled from manufacturer product data sheets.
Aromatic vs aliphaticAromatic polyurea is the tough, economical workhorse but changes color in sunlight. Aliphatic polyurea and polyaspartic topcoats hold color and gloss. Read our aromatic vs aliphatic polyurea guide before you specify exposed work.
Where they go

Industrial coatings by industry

Oil and gas

Containment, tanks, pipe

Secondary containment, tank linings, pipe coatings and splash zones. See pipeline coatings.

Water and wastewater

Concrete under acid attack

Wet wells, clarifiers, manholes and lift stations. See wastewater coatings.

Mining and aggregate

Abrasion and impact

Chutes, hoppers, screens, haul truck beds and conveyor components.

Manufacturing

Floors and equipment

Production floors, chemical storage rooms, loading docks and machine bases.

Agriculture

Manure, fertilizer and feed

Pits, tanks, equipment and barns. See agricultural coatings.

Food and potable water

Check certifications first

Food-contact and potable water use require products certified for that service, such as NSF/ANSI/CAN 61 for drinking water. Not every grade qualifies.

Get it right

How to specify an industrial coating

  1. Define the exposure

    List every chemical, concentration and temperature, plus abrasion, impact, immersion, UV and cleaning methods the surface will see.

  2. Pick the substrate prep

    Steel: cleaning standard and profile (often SSPC-SP 10 near-white for linings). Concrete: mechanical prep to an open surface profile and moisture testing. See surface preparation.

  3. Choose the system, not just the coat

    Primer, body coat and topcoat must be compatible and specified together, with minimum and maximum film thickness for each.

  4. Plan the shutdown

    Fast-cure systems can save days of downtime. Put the return-to-service time in the spec.

  5. Write the testing in

    Dry film thickness, holiday testing for linings, adhesion pull-off tests and a written closeout report.

  6. Use certified applicators

    Plural-component systems are only as good as the crew and the rig. Ask for training records and recent references.

Field noteThe most expensive coating job is the one you do twice. When we see industrial failures, it is almost always prep, moisture in concrete, or film that is too thin at edges and welds, not the chemistry.
In-house option

Spray it yourself

Many plants, fabricators and contractors bring polyurea in-house so they can coat on their own schedule. ArmorThane builds plural-component spray equipment and complete mobile spray rigs, and trains crews to apply our coatings. See how polyurea is applied in our polyurea spray guide.

Equipment

Proportioners and guns

Heated, high-pressure plural-component proportioners for polyurea and spray foam, plus low-pressure systems for some hybrids.

Training

Hands-on certification

Surface prep, equipment setup, spray technique, safety and quality control.

Support

Material and tech support

Product data, specifications and troubleshooting from the people who make the coating.

Industrial coatings

Less downtime, longer service life.

Tell us what your floors, tanks, steel or equipment face and a certified ArmorThane applicator will recommend and quote a system.

Contractors: become an ArmorThane applicator

FAQ

Industrial coatings questions

What is the most durable industrial coating?

There is no single winner. For thick, seamless, impact and abrasion resistant protection, spray polyurea is among the toughest. For aggressive acids and solvents, novolac epoxies often outperform. Durability comes from matching the chemistry to the exposure and preparing the surface properly.

Is polyurea better than epoxy for industrial use?

Polyurea cures in seconds, builds thick in one visit and stays flexible, so it handles impact, movement and fast shutdowns better. Epoxy bonds very well, costs less per mil and resists many chemicals. Many industrial systems use an epoxy primer under a polyurea body coat to get both.

How long do industrial coatings last?

Well-specified systems on properly prepared surfaces commonly last 10 to 25 years or more before major maintenance. ISO 12944 uses durability classes from low (up to 7 years) to very high (more than 25 years) for steel.

Can industrial coatings be applied in cold weather?

Spray polyurea can be applied at much lower temperatures than most epoxies because it cures by fast chemical reaction, but the substrate must still be above the dew point and within the product data sheet limits.

What surface preparation do industrial coatings need?

Steel is usually abrasive blasted to a specified cleanliness and profile. Concrete is mechanically prepared by shot blasting or grinding, cleaned and moisture tested. Prep is the single biggest factor in coating life.

Do you sell industrial coating equipment?

Yes. ArmorThane manufactures plural-component spray equipment and complete mobile spray rigs, and trains crews to apply our coatings.

AT
Written by the ArmorThane technical team. We have manufactured polyurea, polyurethane and polyaspartic coatings, spray foam and plural-component spray equipment in Springfield, Missouri since 1989. We make coatings and spray equipment; comparisons here are general and do not replace a project specification or product data sheet.

Sources

  1. ISO 12944 series, corrosion protection of steel structures by protective paint systems. iso.org
  2. AMPP (formerly SSPC and NACE) surface preparation and coating standards. ampp.org
  3. NSF/ANSI/CAN 61, drinking water system components. nsf.org
  4. ASTM D4541 pull-off adhesion test method. astm.org

Coat it once. Run it longer.

Facilities get a certified ArmorThane applicator for floors, linings, containment and equipment. Contractors and plants can add polyurea capability with our equipment and training, with no franchise fee and no royalties.

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