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Etching Fluid

Verified by manufacturer 22 days ago

Beeck

Acidic concentrate for removing sinter skin on new mineral render.

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+49 7333 96 07 0 Website

Application

  • Aqueous acidic concentrate for etching lime sinter layers on new lime and lime-cement renderings on façades.
  • Suitable for cleaning weathered mineral renders and silicate coatings.
  • Can also be used on interior surfaces if good ventilation is provided.
  • Generally only suitable on solid, firm render or plaster coats with a minimum thickness of 5 mm, not for external thermal insulation composite systems (ETICS), synthetic resin renders/plasters and gypsum.
  • Only for commercial use.

Description

BEECK Etching Fluid reliably removes sinter skin, a vitreous glossy high-tension and impermeable accumulation of binder on the surface of felted and floated lime and lime cement renders. An unremoved sinter skin is a substrate defect according to VOB/C and poses the risk of stress induced spalling, for example during driving rain. The gas tight sinter layer also disrupts the carbonation and recrystallisation of "healthy" lime renders and plasters. They become worn and crumbly underneath the glass-hard layer. Creating a stress-free, porous and firm, surface zone is particularly important for pore deep, permanent silicification of active silicate paints such as BEECK Pure Crystalline and Beeckosil. At the same time, a uniformly absorbent homogeneous surface is created by the etching, which makes it possible to apply smooth, seamless and stain-free mineral coatings. The acid neutralizes within a few minutes on the highly alkaline substrate. Rinsing with water is therefore not for neutralization purposes, but instead to remove exposed textural and aggregate particles on the surface of the render. Especially in interior areas, these can also be removed from the plaster with a stiff broom before coating.


Features and benefits:

  • For use on interior surfaces and on façades
  • Water thinnable: concentrate, to be thinned with three-five parts water
  • Suitable for solid lime and lime-cement render or plaster
  • Reliably removes lime sinter layers
  • Creates a substrate to VOB/C requirements and suitable for painting
  • Optimum silicification of subsequent silicate coatings
  • Reduces absorbency and the staining
  • Pure mineral acid and neutralization products
  • Neutralization products are water insoluble and therefore efflorescence-free
  • If used properly, the neutralization is complete and the rinsing water is acid-free
  • Non-flammable

General information

Color

Clear

Pink

Material

Other

Guidance for specification option:

Aqueous acidic solution of fluorosilic acids (pure mineral acids).

Shape

Formless

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Pr_35_31_66_26 Etching primersPrimary

Specification data - Etching primers

Category

As recommended by coating system manufacturer.

Density

1.20 kg/L.

pH value

1.

Guidance for specification option:

Un-thinned.

Viscosity

Comparable with water.

VOC content

0 g/L.

Manufacturer guidance

ChemVOCFarbV.

Sustainability data

Material

Other

Guidance for specification option:

Aqueous acidic solution of fluorosilic acids (pure mineral acids).

Literature

Etching Fluid - Technical Data Sheet

Etching Fluid - Technical Data Sheet

Beeck Etching Fluid - Safety Data Sheet

Beeck Etching Fluid - Safety Data Sheet