ProFlex 120HW Moisture-Cured High-Water-Resistant Polyurethane Coating
ProFlex 120HW is a premium, moisture-cured, high-performance polyurethane coating engineered for extreme water resistance and flexible protection. Utilizing advanced moisture-cure technology, this single-component coating reacts with ambient humidity to form a dense, elastomeric membrane that delivers exceptional durability in the most demanding environments.
Ideal for applications requiring superior water resistance combined with flexibility, ProFlex 120HW provides long-term protection against water intrusion, chemical exposure, and mechanical stress.
Key Benefits
Superior Water Resistance: Forms an impermeable barrier against standing water, hydrostatic pressure, and moisture vapor transmission
Moisture-Cure Technology: Cures by reacting with atmospheric humidity; ideal for humid environments and underwater applications
Exceptional Flexibility: Remains elastic from -40°F to 250°F (-40°C to 121°C); accommodates substrate movement and thermal cycling
High Build Capability: Achieves desired thickness in fewer coats; excellent edge retention
Chemical Resistant: Withstands acids, alkalis, salts, solvents, and industrial chemicals
Abrasion & Impact Resistant: Withstands heavy foot traffic, equipment impact, and mechanical wear
100% Solids (Zero VOC) : Solvent-free formulation; safe for enclosed spaces and environmentally compliant
Rapid Curing: Tack-free in 2-4 hours; fast return to service
Excellent Adhesion: Bonds to concrete, steel, wood, foam, and many existing coatings
UV Stable: Non-yellowing formulation with excellent gloss retention
Technical Specifications
| Property | Value |
|---|---|
| Chemistry | Moisture-cured polyurethane (100% solids) |
| Appearance | Translucent liquid (clear) |
| Color Options | Clear, Gray, Black, Custom colors available |
| VOC Content | 0 g/L (zero VOC) |
| Solids by Volume | 100% ±2% |
| Viscosity | 2,500 – 3,500 cP (brushable/rollable) |
| Mix Ratio | Single component – no mixing required |
| Pot Life | N/A (cures by moisture, not time) |
| Application Temperature | 35°F – 120°F (2°C – 49°C) |
| Substrate Temperature | Above dew point, minimum 35°F (2°C) |
| Humidity Requirement | Minimum 30% RH for proper cure |
| Tack-Free Time | 2 – 4 hours at 77°F (25°C), 50% RH |
| Recoat Window | 4 – 24 hours; after 24 hours, light sanding required |
| Full Cure | 7 days |
| Tensile Strength | 3,500 psi (ASTM D412) |
| Elongation | 450% (ASTM D412) |
| Hardness | Shore A 85 – 90 |
| Water Absorption | < 1% (7-day immersion) |
| Permeability | < 0.1 perms (ASTM E96) |
| Coverage | 100 – 120 ft²/gallon at 16 mils wet (16 mils dry = 100% solids) |
| Recommended DFT | 16 – 60 mils (1 – 4 coats) |
| Packaging | 1 gallon, 5 gallon, 55 gallon drums |
Applications
Water Containment
Potable water tanks (with NSF certification)
Wastewater treatment facilities
Secondary containment basins
Reservoirs, ponds, canals
Industrial Flooring
Chemical processing plants
Food and beverage facilities
Pharmaceutical manufacturing
Automotive service bays
Warehouse floors
Roofing & Weatherproofing
Flat roofs, balconies, decks
Plaza decks, parking structures
Bridge decks, marine structures
Marine & Submerged
Boat hulls, docks, piers
Ballast tanks, bilge areas
Offshore platforms, splash zones
Infrastructure
Water treatment plants
Pump stations, lift stations
Tunnels, culverts
Secondary containment
The Science of Moisture-Cure Technology
ProFlex 120HW utilizes advanced moisture-cured polyurethane chemistry. Unlike conventional two-component systems that require precise mixing, ProFlex 120HW is a single-component formulation that cures by reacting with ambient moisture in the air.
How it works:
Upon application, the product begins absorbing humidity from the atmosphere
Water molecules trigger a chemical cross-linking reaction
The material transforms from liquid to solid elastomer, releasing no VOCs
The resulting polymer network is densely cross-linked, providing exceptional water resistance, chemical resistance, and mechanical properties
Advantages of moisture-cure technology:
No mixing errors or pot life concerns
Ideal for field applications where precise mixing is difficult
Performs well in humid environments
Excellent adhesion even on marginally prepared surfaces
Deep penetration into porous substrates
Why Choose ProFlex 120HW?
1. True 100% Solids, Zero VOC
No solvents means no shrinkage, no odor, and no environmental compliance headaches. Apply in occupied facilities, food plants, and sensitive environments.
2. One-Component Simplicity
No mixing, no pot life, no mistakes. Open the pail, stir, and apply. Perfect for contractors and maintenance teams.
3. Extreme Water Resistance
Engineered for continuous immersion. Unlike epoxies that may soften or polyureas that require special equipment, ProFlex 120HW delivers outstanding hydrostatic pressure resistance with simple application.
4. Flexibility That Lasts
Remains elastic even after years of service. Accommodates thermal cycling, vibration, and substrate movement without cracking.
5. Rapid Return to Service
Cures quickly even at low temperatures. Minimizes downtime for industrial facilities.
Frequently Asked Questions
Q: Can ProFlex 120HW be applied underwater?
A: While the product cures with moisture, it requires application to a dry substrate. For underwater repairs, use ProFlex 120HW Submersible Repair Kit.
Q: Is it suitable for potable water tanks?
A: Yes, when specified with NSF/ANSI 61 certification. Please order NSF-certified version.
Q: How thick can I apply in one coat?
A: Maximum 30 mils wet (30 mils dry) without sagging. For thicker builds, apply multiple coats within 24 hours.
Q: Can I apply over existing epoxy or polyurethane?
A: Yes, provided the existing coating is sound, clean, and properly profiled. Always perform an adhesion test first.
Q: What happens if humidity is too low?
A: Cure time extends. At <30% RH, consider using a mist humidifier or waiting for more favorable conditions.
Q: How do I repair damaged areas?
A: Abrade the area, clean thoroughly, and apply fresh ProFlex 120HW, overlapping onto surrounding sound coating.
Q: What is the shelf life?
A: 12 months in unopened, tightly sealed containers stored in cool, dry conditions. Keep containers sealed to prevent moisture ingress.
Technical Support
Our coatings specialists provide expert assistance:
Product selection and specification
Application training and troubleshooting
Custom formulation for special requirements
On-site technical support for major projects