How Long Do Commercial Floor Coatings Last in NYC? Lifespan by System Type

Commercial floor coating lifespan NYC: polyurea and polyaspartic systems last 15–25+ years, urethane cement 12–18 years, 100% solids epoxy 5–10 years in NYC conditions, and standard thin epoxy just 2–5 years. NYC’s road salt, freeze-thaw cycling, and below-grade moisture reduce every system’s lifespan by 15–35% vs national averages. The longest-lasting commercial floor coating NYC is polished concrete — 25–30+ years — followed by polyurea and MMA systems. System choice, surface preparation, and MVER moisture testing determine whether you hit the top or bottom of any system’s range.

The NYC Floor Coating Lifespan Question Every Facility Manager Gets Wrong

Here’s a conversation that happens constantly in NYC commercial facilities. A restaurant owner gets epoxy installed, the contractor says it’ll last 10–15 years, and three years later, it’s peeling, yellowing, and chipping around the kitchen equipment. The owner calls for repairs and hears: ‘Well, you’re in a high-traffic environment…’

The truth is, commercial floor coating lifespan in NYC is genuinely different from what most national guides and contractor sales pitches suggest. NYC’s specific combination of road salt winters, freeze-thaw cycling, below-grade moisture, and heavy commercial traffic reduces every coating system’s lifespan — and the degree of reduction varies dramatically by system type.

This guide covers how long floor coatings last in NYC with honest, system-by-system data — not marketing ranges. You’ll see the master lifespan table covering 10+ systems, the sector-by-sector breakdown (restaurants, warehouses, hospitals, retail), the NYC climate factors that reduce lifespan, and the cost-per-year analysis that reveals which ‘expensive’ systems are actually the cheapest floor you can buy.

By the end, you’ll know exactly what to expect from any commercial floor coating NYC — and which system makes the most sense for your specific facility, traffic load, and budget.

Table of Contents

1. Master Lifespan Table — All Commercial Coating Systems
2. Why NYC Conditions Reduce Floor Coating Lifespan
3. Epoxy Floor Coating Lifespan NYC — The Honest Data
4. Polyurea and Polyaspartic: The Long-Life Leaders
5. Urethane Cement: The Commercial Kitchen Standard
6. Polished Concrete: The Longest-Lasting Option
7. Lifespan by NYC Industry Sector
8. What Happens to Epoxy Floors After 20 Years?
9. Signs Your Commercial Floor Coating Needs Replacement
10. Cost Per Year of Service — The Real Value Comparison
11. How to Extend Floor Coating Life in NYC
12. Floor Coating Warranty NYC — What It Actually Covers
13. FAQ: NYC Commercial Floor Coating Lifespan

1. Master Lifespan Table — All Commercial Coating Systems

The most important data in this guide. These are NYC-adjusted lifespan ranges — not national manufacturer specs, which consistently overstate performance in NYC’s demanding environment:

System	Min Life	Max Life	NYC Adjusted	Traffic Level	Maintenance Need
Polished concrete	10 yrs	30+ yrs	10–25 years	Medium	Medium-high resealing
Polyurea system	15 yrs	25+ yrs	15–22 years	Heavy commercial	Very low
MMA (methyl methacrylate)	10 yrs	25+ yrs	12–20 years	All traffic types	Low
Polyaspartic system	12 yrs	20+ yrs	12–18 years	Heavy commercial	Low
Urethane cement	10 yrs	20+ yrs	12–18 years	Heavy industrial	Low
Epoxy mortar system	10 yrs	20 yrs	8–15 years	Heavy industrial	Medium
Concrete overlay	8 yrs	20 yrs	7–15 years	Medium	Medium
100% Solids epoxy	7 yrs	15 yrs	5–10 years	Medium-heavy	Medium
Standard epoxy (thin)	3 yrs	7 yrs	2–5 years	Light only	High
Concrete sealer	2 yrs	5 yrs	1–3 years	Very light	High

The NYC adjustment column is the critical data point. A polyurea system rated 15–25+ years nationally performs at 15–22 years in NYC — near the top of its range because polyurea handles the specific NYC stressors (salt, freeze-thaw, moisture) well. Standard epoxy rated 3–7 years nationally lands at 2–5 years in NYC — at the bottom of its range — because NYC conditions attack standard epoxy aggressively.

2. Why NYC Conditions Reduce Floor Coating Lifespan — The Five Factors

Understanding why the commercial floor coating lifespan in NYC is shorter than national averages is the foundation of making the right system choice. Five NYC-specific factors compound to reduce every coating system’s performance:

NYC Factor	Lifespan Impact	Systems Affected	The Right Mitigation
Road salt (winter)	-15–30%	Thin epoxy, water-based coatings	Polyurea or urethane topcoat with chloride resistance
Freeze-thaw cycling	-10–25%	Rigid epoxy — cracks under expansion	Flexible systems: polyurea, polyaspartic
Below-grade humidity	-20–35%	All epoxy without a vapor barrier	MVER testing + vapor barrier primer before coating
Heavy traffic intensity	-10–20%	All systems — accelerated abrasion	Higher-build specifications, broadcast aggregate topcoats
HVAC thermal cycling	-5–15%	Rigid systems in temperature-controlled spaces	Flexible polyurea or polyaspartic systems

NYC uses 200,000–300,000 tons of road salt per winter season. Every vehicle entering your facility from December through March tracks in sodium chloride and calcium chloride — both of which attack coating chemistry at the molecular level. This single factor alone pushes standard epoxy to the bottom of its lifespan range in NYC commercial applications, and it’s why floor coating lifespan in NYC winters is dramatically shorter than the same system installed in a climate with mild winters.

3. How Long Does an Epoxy Floor Last Commercial? — The Honest Data

Epoxy floor coating lifespan in NYC is the most frequently misstated number in commercial flooring. Here’s the breakdown by epoxy type — because ‘epoxy’ covers dramatically different products:

Water-Based Epoxy — 2–5 Years in NYC (Avoid for Commercial)

Water-based epoxy is the big-box store product marketed as ‘industrial floor coating.’ In NYC commercial applications, it’s genuinely a 2–5 year product — and often less in high-traffic or salt-exposed environments. Low solids content (30–50%), thin film build (20–30 mils DFT), poor moisture tolerance, and minimal chemical resistance make it unsuitable for serious commercial use. If a commercial contractor quotes you water-based epoxy, that’s a red flag.

100% Solids Epoxy — 5–10 Years in NYC

100% solids epoxy is the correct commercial-grade specification. Professionally installed at 10–15 mils DFT on a properly diamond-ground surface, it delivers 5–10 years in NYC commercial environments, 5–7 years in high-traffic industrial settings, up to 10 years in moderate-traffic commercial spaces. Its primary limitations in NYC: UV yellowing, hot tire pickup in vehicle areas, and rigid chemistry that doesn’t accommodate freeze-thaw concrete movement well.

Epoxy Mortar System — 8–15 Years in NYC

Epoxy mortar is a heavy-body, industrial-grade, 3–6mm thick, polymer-aggregate composite construction. In NYC warehouses, manufacturing facilities, and commercial kitchens, it delivers 8–15 years before meaningful surface wear requires attention. Chemical resistance is excellent. Its limitation is the same as standard epoxy: rigid chemistry. Over NYC’s temperature cycling, micro-cracking at the coating-substrate interface eventually develops, and the mortar system requires recoating rather than full replacement.

4. Polyurea and Polyaspartic: NYC’s Long-Life Commercial Coating Leaders

Polyurea floor coating durability in NYC consistently outperforms every other system in NYC’s demanding environment. The 300%+ elongation of polyurea means it flexes with freeze-thaw concrete movement instead of cracking. Its -20°F to 200°F+ operating range means NYC’s temperature extremes don’t stress the coating chemistry. Its chloride resistance means road salt doesn’t attack the coating-substrate bond the way it does with standard epoxy.

Polyurea — 15–22 Years in NYC

• Best for: Automotive garages, warehouses, commercial floors with heavy traffic and salt/chemical exposure
• NYC advantage: The only system that genuinely handles all five NYC climate stressors simultaneously
• Maintenance: Annual inspection, periodic cleaning — no topcoat reapplication needed until 15+ years
• NYC installed cost: $6–$12/sq ft — highest upfront cost, lowest annual cost of any system

Polyaspartic — 12–18 Years in NYC

Polyaspartic floor coating lifespan in NYC commercial applications: 12–18 years, comparable to urethane cement. Polyaspartic is a second-generation aliphatic polyurea with faster cure times (foot traffic in 2–4 hours) and similar UV stability and chemical resistance. It’s increasingly specified for NYC retail, showroom, and commercial environments where a fast return to service is critical. Its chemical resistance is slightly lower than that of urethane cement, but its aesthetic versatility and cure speed are superior.

5. Urethane Cement: The Commercial Kitchen and Food Facility Standard

Urethane cement floor lifespan NYC: 12–18 years in commercial kitchen and food processing applications — the industry standard specification for these environments. Cementitious urethane combines cement aggregate with polyurethane polymer, creating a system that handles thermal shock (steam cleaning, hot water, cooking equipment drainage), chemical exposure (bleach, quaternary ammonium, acids), and sustained high humidity without the osmotic blistering that destroys standard epoxy in these environments.

In NYC restaurant kitchens, where the floor faces daily thermal shock from steam cleaning, chemical exposure from multiple cleaning agents, and moisture from food prep operations, urethane cement is consistently specified because it outlasts every alternative. A 100% solids epoxy in the same kitchen environment: 3–6 years before significant delamination and surface failure. Urethane cement in the same kitchen: 10–15 years with proper maintenance.

6. Polished Concrete: NYC’s Longest-Lasting Floor Surface

Polished concrete durability NYC: 25–30+ years — the longest lifespan of any commercial floor surface. This is why polished concrete is increasingly specified in NYC retail, corporate lobbies, museums, and healthcare facilities despite the higher upfront investment. The reason for its exceptional longevity is fundamental: there’s no coating to delaminate, no film to peel, and no bond to fail. The concrete itself is the floor surface — mechanically refined and chemically densified.

Polished concrete does require floor coating maintenance in the form of periodic resealing (every 2–5 years, depending on traffic), burnishing in high-wear areas, and impregnating sealer reapplication. But the underlying surface doesn’t fail — it can be refinished indefinitely. In the right application (moderate-traffic commercial, retail, corporate), polished concrete’s 25–30+ year surface life makes it the most cost-effective floor per year of service despite its $5–$12/sq ft installed cost.

7. NYC Commercial Floor Coating Lifespan by Industry Sector

System lifespan varies significantly depending on what the floor actually faces. Here’s the realistic commercial floor coating NYC lifespan data by sector:

NYC Sector	Best System	Lifespan (NYC)	Primary Stressor	Maintenance Interval
Restaurant/kitchen	Urethane cement	8–15 years	Thermal shock + chemicals	Annual inspection + spot repair
Warehouse/distribution	Polyurea or epoxy mortar	10–18 years	Forklift + impact	Annual inspection
Retail (high foot traffic)	Polyaspartic or polished concrete	8–15 years	Abrasion + aesthetic wear	Reseal every 2–3 years
Healthcare/hospital	MMA or urethane cement	12–20 years	Chemical sterilization	Annual inspection
Pharmaceutical/cleanroom	MMA + anti-static	15–25 years	Chemical + ESD requirements	Semi-annual inspection
School/education	Epoxy or polyaspartic	7–12 years	Foot traffic + chair abrasion	Reseal every 3–5 years
Automotive garage	Polyurea	15–20 years	Oil, road salt, hot tires	Annual inspection
Food processing / FDA	Urethane mortar	8–12 years	Chemical + thermal cycling	Semi-annual + HACCP inspection
Cannabis grow facility	Urethane cement or polyaspartic	10–18 years	High humidity + chemicals	Annual OCM inspection

8. What Happens to Epoxy Floors After 20 Years? — The Realistic Timeline

‘What happens to epoxy floors after 20 years?’ — This is a top People Also Ask question across every epoxy flooring search. The honest answer depends on which epoxy system and how it was maintained:

Standard Thin Epoxy — Year-by-Year NYC Reality

• Year 1–2: New condition. Surface is sealed, easy to clean, and aesthetically good
• Year 2–4: UV yellowing begins (if aliphatic topcoat was not applied). Hot tire pickup marks appear in vehicle areas. Salt damage initiates at edges and transitions in salt-exposed facilities
• Year 4–6: Visible delamination begins at stress points — cracks, drains, doorways, equipment legs. Moisture blistering appears in below-grade installations
• Year 6–8: Coating failure is widespread. Peeling, cracking, and bare concrete areas require professional remediation or full reinstallation
• Year 8–10: Full reinstallation required. End of first lifecycle. NYC high-traffic facilities often reach this point at year 4–6 rather than 8–10

100% Solids Epoxy (Properly Installed) — NYC Timeline

• Year 1–5: Excellent performance. Surface maintains integrity, chemical resistance is good, minor UV yellowing in sunlit areas
• Year 5–8: Progressive surface wear in the highest-traffic areas. Micro-cracking at expansion joints from freeze-thaw cycling. Topcoat reapplication recommended at year 5–7 to extend basecoat life
• Year 8–12: Topcoat wear-through in traffic areas. Chemical resistance reduces. Delamination risk increases if topcoat was not reapplied. Professional assessment required
• Year 12–15: End of realistic NYC lifespan without topcoat maintenance. Full resurfacing or system replacement is warranted

Polyurea System — NYC 20-Year Timeline

• Year 1–10: Minimal change. UV-stable, salt-resistant, flexible — the system handles NYC’s stressors without visible degradation
• Year 10–15: Minor topcoat surface wear in the highest-traffic areas. Broadcast aggregate provides anti-slip but begins to wear smooth in peak traffic zones
• Year 15–20: First significant maintenance event — topcoat reapplication or broadcast aggregate refresh. Base system remains fully intact
• Year 20+: System still structurally sound. Cosmetic resurfacing extends life indefinitely. First full reinstallation typically not needed until year 20–25+

9. Signs Your NYC Commercial Floor Coating Needs Replacement

Knowing when to act is as important as knowing your system’s lifespan. Floor coating failure signs NYC that indicate professional assessment is needed:

Early Warning Signs — Act Before Full Failure

• Surface delamination at edges: Coating lifting at wall-floor transitions, drain frames, or expansion joints. Water is migrating under the coating from below or laterally
• Visible crazing or micro-cracking: Network of fine cracks across the coating surface — thermal cycling stress, substrate movement, or coating brittleness from age
• Hot spots of discoloration: Circular yellowing or bubbling patterns indicate moisture vapor transmission hotspots beneath the coating — MVER problem
• Topcoat wear-through: Visible aggregate or primer coat showing through topcoat in traffic lanes. Surface protection is compromised — reseal now or risk basecoat damage

Failure Stage — Immediate Action Required

• Widespread peeling or lifting: Coating is no longer bonded to substrate across significant areas — delamination is complete and accelerating
• Bare concrete exposed: Any area where coating has fully detached exposes concrete to chemical penetration, staining, and further deterioration
• Structural cracks through coating: Cracks that run through the full depth of the coating into the substrate indicate either ongoing substrate movement or coating failure under stress
• Chemical staining through coating: If chemicals are penetrating and staining the coating, the topcoat seal has failed, and the system is no longer providing protection

The key insight: floor coating recoat vs replacement in NYC is an economic decision. Catching degradation at the early warning stage allows a topcoat reapplication at $2–$4/sq ft that extends system life by 5–8 years. Waiting for full failure requires system replacement at $6–$18/sq ft. The difference between proactive maintenance and reactive replacement is often $4,000–$14,000 on a 1,000 sq ft commercial floor.

10. NYC Commercial Floor Coating Cost Per Year — The Real Value Comparison

NYC commercial floor coating cost per year reframes the entire value conversation. The cheapest coating to install is rarely the cheapest coating to own. Here’s the 10-year total cost of ownership data that no contractor’s sales pitch includes:

System	Install (1,000 sq ft)	NYC Lifespan	Annual Floor Cost	10-Year Total
Standard thin epoxy	$3,000–$5,000	3–5 years	$600–$1,667/yr	$6,000–$16,670 (2–3 reinstalls)
100% Solids epoxy	$5,000–$9,000	5–8 years	$625–$1,800/yr	$10,000–$18,000 (1–2 reinstalls)
Polyaspartic system	$7,000–$13,000	12–18 years	$389–$1,083/yr	$7,000–$13,000 (1 install)
Polyurea system	$7,000–$13,000	15–22 years	$318–$867/yr	$7,000–$13,000 (1 install)
Urethane cement	$9,000–$15,000	12–18 years	$500–$1,250/yr	$9,000–$15,000 (1 install)

The math is unambiguous: standard thin epoxy at $4,000 installed (cheaper than polyurea) costs $6,000–$16,670 over 10 years with repeated reinstallation. Polyurea at $10,000 installed costs $10,000 over 10 years — zero reinstallation. The ‘expensive’ system saves $6,670 at the low end over a decade. NYC facility managers who understand this framing make fundamentally different purchasing decisions.

11. How to Extend Commercial Floor Coating Life in NYC

Floor coating maintenance NYC commercial best practices that directly extend system lifespan — validated data, not generic tips:

14. Annual professional inspection: Walk the floor with a trained eye — checking for delamination edges, hairline cracks, topcoat wear-through, and drain-perimeter failures. Catching these at year 3–4 prevents year 6–8 replacement
15. Entrance mat protocol: Absorptive matting at all building entrances captures 80%+ of road salt and grit before it reaches the floor surface. Salt is the primary lifespan-reducer for NYC coatings — mechanical exclusion is the highest-leverage maintenance action
16. pH-neutral cleaning products only: Acid and alkaline cleaners attack coating chemistry over time. Maintenance protocols using pH 7–8 cleaners preserve topcoat integrity and extend resealing intervals
17. Topcoat reapplication at wear indicators: Don’t wait for full topcoat failure. When anti-slip aggregate begins to wear smooth or the topcoat thickness measures below 2 mils DFT, reapply. Cost: $2–$4/sq ft. Alternative: full system replacement at $6–$18/sq ft
18. Spill response protocol: Chemical spills neutralized and cleaned immediately cause minimal damage. Spills left to dwell — especially acids and strong alkalines — attack coating chemistry through extended contact. A 15-minute response protocol prevents the damage that a 2-hour dwell would cause

12. Floor Coating Warranty NYC — What It Actually Covers

Floor coating warranty NYC is a critical topic that most buyers don’t research until they need to make a claim. Two distinct warranties apply to every commercial coating project, and they cover different things:

Manufacturer’s Material Warranty

The coating product manufacturer warrants that the material itself is free from defects and meets published performance specifications. This does not cover installation failures, surface preparation deficiencies, or environmental factors. Manufacturer warranties range from 2 to 10 years, depending on system type. Reading the exclusions is more important than reading the headline warranty period.

Contractor’s Installation Warranty

The installing contractor warrants their workmanship — the correct application of the correct product to the correctly prepared substrate. This is the warranty that matters most for commercial facility owners. Duraamen provides written installation warranties covering ASTM D4541 pull-off adhesion performance minimums, correct film build (DFT), and surface preparation documentation (CSP profile achieved). Warranty periods: 2–5 years for standard systems, up to 10 years for premium full-system installations.

What Voids Floor Coating Warranties in NYC

• Application below minimum temperature thresholds (50°F for epoxy, variable for polyurea)
• Failure to conduct MVER moisture testing before installation — undisclosed moisture voids most warranties
• Use of cleaning chemicals outside the specified pH range
• Mechanical damage from equipment not rated for the floor system
• Substrate modifications after coating installation

The NYC Floor Coating Lifespan Decision: Match System to Reality

The consistent pattern in commercial floor coating lifespan NYC data is this: the systems that match NYC’s specific environment — road salt resistance, freeze-thaw flexibility, moisture tolerance — perform near the top of their lifespan ranges. Systems that don’t match — rigid epoxy in freeze-thaw conditions, thin film coatings under salt exposure — perform at the bottom or below.

The right approach for any NYC facility is to specify the system that matches the actual conditions, not the system with the lowest installation cost. Polyurea for high-traffic commercial and automotive. Urethane cement for kitchens and chemical environments. Polished concrete for retail and corporate, where longevity and aesthetics are both priorities. MMA for healthcare, pharmaceutical, and cleanroom applications.

Duraamen specifies and installs commercial floor coating NYC systems across every sector — using MVER testing, CSP surface profile verification, and ASTM D4541 adhesion testing to ensure every installation performs at the top of its lifespan range. The written warranty backs that commitment.

Want to Know Exactly How Long Your NYC Floor Coating Will Last? Duraamen’s NYC team assesses your slab condition, traffic load, chemical exposure, and facility type — then specifies the exact system and lifespan you can realistically expect. No generic answers. No overselling. Just an honest, data-backed recommendation with a written warranty to match. Request Your Free NYC Floor Coating Assessment → nyc.duraamen.com

FAQ — NYC Commercial Floor Coating Lifespan

How long do commercial floor coatings last in NYC?

Commercial floor coating lifespan NYC: polyurea and polyaspartic 15–22 years, urethane cement 12–18 years, epoxy mortar 8–15 years, 100% solids epoxy 5–10 years, standard thin epoxy 2–5 years. NYC’s road salt, freeze-thaw cycling, and below-grade moisture reduce all systems by 15–35% vs national averages. The longest-lasting systems — polished concrete (25–30+ years), polyurea, and MMA — handle NYC’s specific stressors best.

What happens to epoxy floors after 20 years in NYC?

Standard thin epoxy won’t last 20 years in a NYC commercial facility — it’s typically replaced at year 3–8. 100% solids epoxy with proper maintenance reaches 10–15 years. After 20 years, a well-maintained 100% solids epoxy system shows: significant topcoat wear, micro-cracking from freeze-thaw cycling, UV yellowing, and likely 1–2 topcoat reapplications already completed. Full system replacement is warranted at or before 20 years for virtually all epoxy systems in NYC commercial use.

How often should you recoat a commercial floor in NYC?

Depends on system: (1) Standard epoxy — every 3–5 years. (2) 100% solids epoxy — topcoat reapplication at year 5–7, full replacement at year 10–12. (3) Polyurea — first topcoat maintenance at year 12–15, no full replacement expected until year 20+. (4) Urethane cement — annual inspection, spot repair as needed, full resurfacing at year 12–15. (5) Polished concrete — reseal every 2–5 years, depending on traffic, surface refinishing as needed — no replacement.

What is the most durable commercial floor coating?

For NYC commercial applications: polyurea system at 15–22 years in NYC conditions, or MMA (methyl methacrylate) at 12–20 years for specialized applications. Polished concrete exceeds both at 25–30+ years but is a surface treatment rather than a coating. For the specific combination of NYC stressors — salt, freeze-thaw, moisture, heavy traffic — polyurea floor coating durability in NYC consistently outperforms every other coated system.

How much does it cost to epoxy 1,000 sq ft in NYC?

Professional 100% solids epoxy installation in NYC: $5,000–$9,000 for 1,000 sq ft, including surface preparation, primer, base coat, and topcoat. Water-based epoxy: $2,000–$4,000 (not recommended for commercial use). Epoxy mortar system: $7,000–$12,000. Polyurea full system: $7,000–$13,000. The cheapest option (water-based epoxy) requires replacement every 2–5 years — costing $10,000–$20,000+ over 10 years vs a single polyurea installation.

Is polyaspartic really better than epoxy for NYC commercial floors?

Yes, for most NYC commercial applications. Polyaspartic floor coating lifespan: 12–18 years vs 5–10 years for 100% solids epoxy. Polyaspartic is UV-stable (doesn’t yellow), cures in hours rather than days, adheres to damp concrete with proper primer, and handles NYC’s temperature range without the cracking that rigid epoxy experiences under freeze-thaw cycling. The premium over epoxy ($2–$5/sq ft more) is recovered within the first reinstallation cycle of the epoxy system — typically within 6–8 years.

Can mold grow under an epoxy floor in NYC?

Yes — and this is a significant concern for below-grade NYC commercial spaces. When moisture vapor transmits through the concrete slab (undetected because MVER testing wasn’t performed before installation), it accumulates beneath the epoxy film. In warm conditions, this creates an environment where mold and bacteria can grow between the coating and the substrate. This is both a health concern and a warranty-voiding condition. The prevention: MVER testing to ASTM F1869 before any installation, and specification of a moisture vapor barrier primer when readings exceed 3 lbs/1000 sq ft/24hr.

What is the downside of epoxy flooring on concrete in NYC?

For NYC commercial applications, the main downsides of standard epoxy are: (1) UV yellowing — aromatic epoxy chemistry degrades in sunlight. (2) Rigid chemistry — cracks under NYC freeze-thaw cycling. (3) Hot tire pickup — thermal softening in vehicle areas. (4) Moisture sensitivity — below-grade NYC garages and basements require MVER testing and vapor barrier primers or the epoxy delaminates. (5) Temperature installation limits — can’t be applied below 50°F, ruling out fall/winter installation in unheated spaces. (6) 5–10 year NYC lifespan vs 15–22 years for polyurea systems.