NW ‘Z’ GRADE

Description

NW ‘Z’ GRADE

Extreme-Durability Waterproof Deck Coating for Concrete, Steel, and Marine Applications

NW ‘Z’ GRADE is a premium-quality, single-component waterproofing coating engineered for exceptional durability, flexibility, and abrasion resistance. Designed for concrete decks, walkways, stairways, and a wide range of structural surfaces, it delivers long-term protection in both architectural and heavy-duty industrial environments.

Formulated as a solvent-based system, NW ‘Z’ GRADE can be applied across a wide temperature range and cures into a seamless, resilient membrane. It is designed to bridge hairline cracks, accommodate substrate movement, and resist impingement attack while maintaining strong adhesion and surface integrity.

Built for demanding exposure conditions, NW ‘Z’ GRADE performs in marine, industrial, and constant immersion environments, providing a dense protective barrier that maintains flexibility at low temperatures and strength under high heat.

Available in 24 standard colors, with custom color matching upon request.

Key Benefits

Extreme Durability & Abrasion Resistance
Withstands heavy foot traffic, mechanical wear, and surface abuse
Permanent Flexibility
Bridges hairline cracks and accommodates expansion and contraction of substrates
Waterproof Performance
Forms a dense, seamless membrane suitable for wet, marine, and submerged conditions
UV Resistance & Color Stability
Excellent resistance to UV exposure with long-lasting color retention
Chemical & Environmental Resistance
Protects against weathering, industrial exposure, and environmental degradation
Marine & Submersion Rated Performance
Suitable for constant water immersion and marine applications
Dense Protective Barrier
Advanced molecular structure provides a strong, resilient surface film
Thermal Stability
Remains flexible in cold temperatures and stable under heat
Pest Resistance
Will not attract insects, birds, reptiles, or vermin
User-Friendly Application
Easy application designed for consistent, high-quality results
Proven Performance
Tested and validated for deck coating system performance standards

Various Uses

Restores fiberglass water slides and GRP structures
Waterproofs planters and landscaped concrete areas
Relines decorative fountains and water features
Restores fiberglass decks and recreational surfaces
Protects industrial and marine walkways and platforms

Recommended Substrates

Suitable for application over:

Concrete and cementitious surfaces
Fiberglass composites (GRP)
Insulation systems
Most metals
Mineral composites
Wood and wood composites
Rubber and plastic composites
Other approved structural and industrial surfaces

Coverage

Approximately 2 gallons per 100 sq ft

(Coverage may vary depending on substrate condition and surface texture.)

Container Sizes

1 gallon, 3.5 gallon

Technology

Ethylene Elastomer System

NW Z GRADE Application Guideline

Surface Preparation

Surfaces must be clean, dry, and free of dirt, loose debris, oil, grease, or any contaminants that may interfere with proper adhesion.
All repairs to damaged or defective areas must be completed prior to application.

Application

NW ‘Z’ GRADE should be applied directly from the container after mixing thoroughly with a low-speed power mixer for a minimum of 2 minutes

Apply using a brush, roller, or spray equipment in a smooth, even manner to achieve uniform coverage. Install in two coats.

Ensure adequate ventilation to promote proper drying between coats and prior to placing the surface into service.

Under well-ventilated conditions, drying time is approximately 12 hours at 70°F (21°C) and 50% relative humidity for a 16 mil wet film thickness.

Spray Application

Use airless spray equipment with a 30:1 or 40:1 ratio and a #35 or larger tip size.

Clean-Up

Clean tools and equipment with xylene or toluene solvent.

Limitations

Do not apply to wet, frozen, or moisture-saturated surfaces. Proper surface preparation is essential for optimal performance.
Shelf life is approximately 24 months when stored in unopened containers indoors.
This product is flammable. Keep away from heat, sparks, and open flames. Use only EP-rated equipment.

Safety Information

Read the product label and Safety Data Sheet (SDS) prior to use for important health and safety information.

Keep out of reach of children and pets.

For additional information, contact the Andek Technical Department.

NW Z GRADE Technical Data

VOC	420 gms/liter
Moisture Vapor Transmission	0.01 perms	ASTM E-96
Tensile Strength	2,000 psi	ASTM D-412
Elongation	350%	ASTM D-412
Solids	55% (B.W.); 53% (B.V.)	ASTM D-1044
Flashpoint	105°F (Closed Cup)	FTMS 141A (M4293)
Shore ‘A’ Hardness	75	ASTM D-2240
Weatherometer (5000 hours)	Pass	ASTM G-23
Low Temperature Flexibility	180° bend (10°F)	ASTM C-711
Density	Approx. 9 lb/gallon	ASTM D-1475
Viscosity	Approx. 15,000 cps	ASTM D-446