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Primer · ZN-250

Joker Multi-Purpose Primer

Hybrid 2K primer for use wet-on-wet or as a sandable primer filler. Adheres to aluminium, galvanised steel, factory coatings and existing paintwork.

  • 2K · Two-component
  • Steel panel
  • Galvanised steel
  • Aluminium
  • Existing paintwork
Request TDS / SDS
JOKER PRIMER2K ACRYLIC PRIMER2KZN-2501 L

Packaging

1 L · 3 L

Overview

What is Joker Multi-Purpose Primer?

ZN-250 Joker Multi-Purpose Primer is a hybrid, two-component acrylic primer that offers two different working methods in a single product. Thinned more, it works as a wet-on-wet primer that needs no sanding; thinned less, it works as a sandable primer filler. This flexibility reduces the need to stock separate primers for different jobs in the workshop and makes it possible to build the right system for every repair from the same product.

It provides strong adhesion to aluminium, galvanised steel, factory (OEM) coatings and existing paintwork, reducing the need for an additional adhesion primer on repairs involving mixed substrates. In wet-on-wet mode, basecoat can be applied directly after a flash-off of approximately 15–20 min at 20 °C. In sanding mode, its filling capacity covers filler edges and minor imperfections, creating an even surface that is easy to sand.

ZN-250 is mixed 4 : 1 by volume with ZN-410 2K Acrylic Primer Hardener and thinned with ZN-510 Acrylic Thinner: 10% for the sanding system and 25–30% for the wet-on-wet system. Wet-on-wet is the preferred mode for new and factory-primed replacement parts, and sanding mode for surfaces repaired with ZN-110 Universal Polyester Filler or ZN-170 Galva Filler. On plastic parts, ZN-240 1K Plastic Primer is applied first.

Key features

  • Wet-on-wet and sandable primer filler modes in one product
  • Adheres to aluminium, galvanised steel, OEM coatings and existing paintwork
  • Basecoat after 15–20 min in wet-on-wet mode
  • High build and easy sanding in sanding mode
  • Versatile formula that reduces the range of primers kept in the workshop
Technical specifications

Technical data

Values are typical at 20 °C and 65% relative humidity. Please review the product's current Technical Data Sheet (TDS) before application.

Joker Multi-Purpose Primer technical data
Product type2K acrylic hybrid primer
Mixing – sanding system4 : 1 (by volume) + 10% ZN-510 Acrylic Thinner
Mixing – wet-on-wet4 : 1 (by volume) + 25–30% ZN-510 Acrylic Thinner
HardenerZN-410 2K Acrylic Primer Hardener
Pot life (20 °C)45–60 min
Spray gun nozzle size / pressure (HVLP)Sanding 1.7–1.9 mm, wet-on-wet 1.3–1.5 mm; 2.0 bar
Number of coats / dry film thicknessSanding: 2–3 coats, 80–120 µm; wet-on-wet: 1 coat, 20–40 µm
Drying (20 °C / 60 °C)Wet-on-wet: basecoat after 15–20 min at 20 °C. Sanding: 3–4 h at 20 °C; 30–40 min at 60 °C
SandingSanding system: dry P400–P500; wet-on-wet system: no sanding
ColourGrey

Pack sizes

  • 1 L
  • 3 L

Colour

Grey

Technical documents

Our technical team will send the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) you request by email.

Request TDSRequest SDS

Drying times vary with temperature, humidity, film thickness and air circulation. Consult our technical team about special conditions.

Application

Step-by-step application

The recommended application sequence for a professional result.

  1. 01

    Surface preparation

    Scuff the factory primer on new parts and existing paintwork with P400 or a grey scuff pad; prepare filled areas with P180–P240. Key aluminium and galvanised surfaces with P240–P320 and clean them with ZN-530 Surface Cleaning Thinner.

  2. 02

    Choosing the mode

    Choose the sanding system for filled surfaces and those that need correcting; choose the wet-on-wet system for flawless new parts and sound factory coatings.

  3. 03

    Mixing

    Mix the primer 4 : 1 by volume with ZN-410 2K Acrylic Primer Hardener. Add 10% ZN-510 Acrylic Thinner for the sanding system or 25–30% for the wet-on-wet system.

  4. 04

    Application

    For the sanding system, apply 2–3 coats with a 1.7–1.9 mm nozzle, allowing 5–10 min between coats; for the wet-on-wet system, apply a single closed, even coat with a 1.3–1.5 mm nozzle. Set the HVLP inlet pressure to approximately 2.0 bar.

  5. 05

    Wet-on-wet: basecoat

    After a 15–20 min flash-off at 20 °C, apply basecoat without sanding. If the maximum overcoating time stated in the Technical Data Sheet (TDS) is exceeded, the primer must be dried and sanded.

  6. 06

    Sanding system: drying and sanding

    Dry for 3–4 h at 20 °C or for 30–40 min at a part temperature of 60 °C. Apply a dry guide coat and sand dry with P400–P500.

  7. 07

    Topcoat

    Clean the surface and wipe it with a tack cloth, then continue with the basecoat and clear coat system.

Storage and safety

  • Store in the original, closed container at 5–25 °C in a dry, well-ventilated area.
  • Shelf life in the unopened container is typically 12 months. ZN-410 2K Acrylic Primer Hardener is sensitive to moisture; close its container tightly immediately after use.
  • The product and its vapours are flammable; keep away from heat, sparks, open flames and direct sunlight.
  • Once mixed with hardener, the product contains isocyanates. When spraying, wear suitable respiratory protection (preferably an air-fed mask), gloves and safety glasses; always read the product's Safety Data Sheet (SDS).
System compatibility

Products used together

Zenova products tested in the same system as this product, which give the best results together with it.

  • 2K
    HardenerZN-410

    2K Acrylic Primer Hardener

    2K hardener fully compatible with ZN-210, ZN-220 and ZN-250 acrylic primers; ensures a fast reaction, complete curing and easy sanding.

    View product
  • Zenova ZN-510 Acrylic Thinner packaging
    1K
    ThinnerZN-510

    Acrylic Thinner

    Balanced-evaporation thinner that brings 2K acrylic paints, clear coats and primers to ideal spray viscosity; reduces orange peel and ensures even flow.

    View product
  • 1K
    PrimerZN-240

    1K Plastic Primer

    Single-component adhesion-promoting primer that forms a strong bond on PP, PP/EPDM and ABS plastics. For bumpers, mirror covers and exterior trim parts.

    View product
  • 2K
    FillerZN-170

    Galva Filler

    2K filler developed with special resins for maximum adhesion on galvanised and zinc-coated steel. Can also be used with confidence on aluminium and its alloys.

    View product

Application systems that include this product

Frequently asked

Questions about Joker Multi-Purpose Primer

Which mode should I choose, and when?

If the surface has filler, sanding marks or waviness, use the sanding system; in this mode ZN-250 works like a primer filler. On flawless new parts, factory-primed replacement panels and sound existing paintwork, the wet-on-wet system eliminates the sanding step and saves a considerable amount of time.

When can I apply basecoat in wet-on-wet mode?

Basecoat can be applied after a flash-off of approximately 15–20 min at 20 °C, once the primer has lost its gloss and turned matt. This time is longer at low temperatures. If the maximum overcoating time stated in the TDS is exceeded, the primer must be dried and sanded.

Do aluminium and galvanised surfaces need an additional primer?

ZN-250 can be applied directly to aluminium and galvanised surfaces that have been properly prepared, i.e. keyed and cleaned with ZN-530 Surface Cleaning Thinner. Plastic parts are the exception; on these surfaces, ZN-240 1K Plastic Primer must be used first.

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