NW ‘Z’ GRADE

Description

NW Z Grade

Premium Waterproof Deck & Surface Coating

NW Z Grade is a single-component, solvent-based waterproofing coating engineered to protect and restore decks, walkways, and stairways. Designed for permanent flexibility, toughness, and abrasion resistance, it bridges hairline cracks and moves with the substrate to maintain long-term performance.

Suitable for concrete, steel, fiberglass, and wood surfaces, NW Z Grade performs in marine, industrial, and constant submersion environments. Available in 24 standard colors plus custom options, with smooth or textured finishes to meet aesthetic and safety requirements.

Key Benefits

Single-Component, Ready to Use – No measuring or complex mixing
Permanent Flexibility – Bridges hairline cracks and accommodates expansion and contraction
Exceptional Toughness & Abrasion Resistance – Built for heavy-use surfaces
UV Stable & Colorfast – Long-term resistance to fading and degradation
Submersion & Marine Rated – Suitable for constant water exposure
Temperature Resilient – Flexible in low temperatures; strong at elevated temperatures
Dense Molecular Structure – Creates a resilient, waterproof barrier
User-Friendly Application – Consistent, high-quality results
Tested & Validated – Evaluated by the Sealant Waterproofing and Restoration Institute (SWR Institute) for priority performance in deck coating systems
Available in Smooth or Textured Finishes – Standard and custom colors available

Typical Applications

Restoring fiberglass water slides and exterior GRP fabrications
Waterproofing planters and landscaped concrete structures
Recoating fiberglass decks
Relining decorative water fountains
Protecting marine and industrial deck systems

Recommended Substrates

NW Z Grade may be applied over:

Concrete
Fiberglass composites
Insulation
Most metals
Mineral composites
Wood and wood composites
Rubber and plastic composites
Other approved surfaces

Coverage

Approximately 2 gallons per 100 sq ft
(Coverage varies depending on substrate condition and porosity)

Container Sizes

1 gallon
5 gallon
55 gallon

Technology: Ethylene elastomer

Preparation and Application

Surface Preparation
Surfaces must be dry, free of dirt or loose debris, and free of oil, grease, or any substance that would interfere with adhesion. All repairs of damage or defects must be made prior to product application.

Application
NW ‘Z’ GRADE is applied straight out of the can after 2 minutes of gentle low speed mixing or stirring. Apply the product using brush, roller, or spray technique. Apply NW ‘Z’ GRADE in a smooth, even fashion to achieve a uniform coating thickness 2 coats. Allow sufficient ventilation to promote thorough drying between coats and before service. Drying time in well ventilated circumstances is 12 hours at 70°F (50% R.H.) for 16 mils wet film thickness.

Spray Application
NW ‘Z’ GRADE should be used with the following equipment specifications: ratio 30:1 or 40:1 and a #35 or larger tip.

Clean up
Clean tools and equipment with xylene or toluene solvents.

Limitations
Do not apply to wet or frozen surfaces that are saturated with moisture. Proper surface preparation is important to product performance. Shelf life is 24 months in unopened cans stored indoors. This product is flammable. Keep away from sources of heat, sparks, and flames. Use only EP rated equipment.

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

KEEP AWAY FROM CHILDREN AND PETS

For additional information, contact the Andek Technical Department

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