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Intumescent coating systems

Primer coating

Primelack B

  • Function and application
    PRIMELACK B is an anti-corrosive primer coating, part of the passive fire protection system for steel structures exposed to cellulosic fires – PROTELACK SFP. 
     It is intended for use when the ambient temperature is above 0ºC. 
  • Type and characteristics
    Two-component, high-solid epoxy primer and/or intermediate coat.
  • Performance properties
    Contains zinc phosphate, easy to apply, fast-drying, and capable of forming a high-build coating.

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Primelack B

PRIMELACK B – two-component high-solid epoxy primer

PRIMELACK B is a two-component epoxy coating designed for priming and/or intermediate use.
It contains zinc phosphate, is easy to process, fast-drying, and suitable for high-build applications.

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Application

Surface preparation requirements before application:

  • The surface must be clean and dry, free from dust, grease, salts, and ice.
  • It is recommended to apply the primer immediately after abrasive blasting to avoid flash rust.

Characteristics

The Protelack SFP system is a multi-layer coating system consisting of:

  • anti-corrosive primer,
  • intumescent fire protection coating,
  • solvent-based topcoat.

System characteristics:

  • High fire resistance, suitable for both interior and exterior use.
  • High-quality finish – topcoats available in RAL colors.
  • Can be applied on previously primed elements with other epoxy primers without removal, reducing project costs.
  • Provides fire protection of open steel profiles up to class R120 and closed profiles up to class R90.
  • For external applications (X), the system must be protected with a polyurethane topcoat (Protefilm T) at a thickness of 120 μm.
  • For internal applications (Z1), the system may be used without a topcoat – the white intumescent layer provides a clean interior finish.

Technical specification

Color
Red-brown
Finish
Matt
Components
2
Density (mixture)
1.5 ± 0.1 g/cm³ (depending on color)
Solids by volume
70 % ± 2%
Application methods
airless spray, brush or roller
Heat resistance
max. 120 ºC / 150 ºC (short-term)

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