priming mass for silicone renders

P1  na ściany P1 na ściany
P3  do wewnątrz P3 do wewnątrz
P4  na zewnątrz P4 na zewnątrz
N7  pędzel N7 pędzel
N9  wałek N9 wałek

Product description

Primes substrates for AVAL KT 74 (ATLAS SILKON N) thin-coat silicone renders.
Limits the absorbability of the substrate – prevents excessive transfer of water from the freshly applied renders into the substrate.

Main properties

  • ensures ideal adhesion of the render
  • reduces absorbability and strengthens the substrate
  • facilitates render application and texture forming
  • unifies the substrate colour
  • vapour permeable

Main parameters

  • consumption: ca. 0.3 kg / 1 m²
  • adhesion: > 1.0 MPa


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Primes substrates for AVAL KT 74 (ATLAS SILKON N) thin-coat silicone renders.
Increases adhesion – strongly adheres to the substrate and the applied renders.
Limits the absorbability of the substrate – prevents excessive transfer of water from the freshly applied renders into the substrate.
Facilitates the execution of the next layer – the rough surfaces reduces “slip” of the applied render.
Creates temporary protective layer for the façade – protects the bare façade against weather conditions for half a year.
Types of substrates – concrete, traditional plasters on walls of bricks, blocks, or ceramic, cellular concrete or silicate hollow bricks, plasterboards, thermal insulation systems with EPS and mineral wool.


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Contains aggregate – increases the adhesion owing to significant development of the effective surface between the layers (creates rough surface).
Protects the substrate against adverse effects caused by the new layer – constitutes a chemical barrier between the substrate and the render, limiting their interaction – limits colour penetration from the substrate and occurrence of stains on the surface of the render.
High adhesion – min. 1.0 MPa to concrete.


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AVAL KT 76 is manufactured on the basis of organosilicon resin and quartz powder.
Density of the ready-to-use product
ca. 1.5 g/cm³
Adhesion to concrete
> 1.0 MPa
Mass preparation temperature,
substrate and ambient temperature during work
from +5°C to +30°C
Drying time
4 ÷ 6 h


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AVAL KT 76 is an element of the AVAL and AVAL ROKER external thermal insulation systems which have been given:
- the European Technical Approval no. 06/0187,
- the European Technical Approval no. 06/0281,
- the National Standard Authority of Ireland (NSAI) Certificate no. 10/0347,
- the British Board of Agrément (BBA) Certificate no. 13/5018.


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Substrate preparation
The substrate should be:
• stable – sufficiently rigid
• sufficiently long stabilized – the assumed stabilizing time for substrates is, respectively:
−for new cement plasters from ready to use ATLAS plastering mortars, min. 1 week for each 1 cm of thickness,
−for concrete walls - at least 28 days,
• dry,
• even – fill in larger irregularities and cavities with ATLAS LEVELLING MORTAR, ATLAS ZW 330 or ATLAS PLASTERING MIX, or adhesive mortars for the execution of the reinforced layer in thermal insulation systems. Before repair, prime the surface with AVAL KT 17 (ATLAS UNI-GRUNT) emulsion,
• clean – free from layers that can deteriorate the adhesiveness of the render, especially dust, dirt, lime, oil, grease, wax, residues of oil and emulsion paints; a substrate covered with algae, fungi, etc. must be cleaned with ATLAS MYKOS agent.
Mass preparation
The product is delivered as the ready to use mix. It must not be mixed with other materials, diluted, or thickened. Mix the contents directly before application to equalize the consistency.
Mass application
Apply the priming mass onto the prepared substrate (evenly over the whole surface) using a roller or a brush.
Rendering of the surface can commence after the priming mass has completely dried, i.e. after 4 ÷ 6 hours after its application.


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The average consumption is ca. 0.3 kg of the priming mass for 1 m².


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• The primed surface has to be protected against direct sunlight, wind, an precipitation, both during works and while setting.
• The tools must be cleaned with clean water directly after use.
• Protect eyes and skin. In case of direct contact with eyes, seek medical advice. Follow the instructions of the Safety Data Sheet.
• Keep in tightly sealed original and labeled containers. Keep in dry and cool places, protect against overheating (> 30 °C) and freezing – the product freezes and irreversibly loses its performance in temperature below 0 °C. Protect against direct sunshine. Shelf life in conditions as specified is 12 months from the production date shown on the packaging.


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Plastic buckets: 15 kg
Pallet: 660 kg in 15 kg buckets


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The above information constitutes basic guidelines for the application of the product and does not release the user from the obligation of carrying out works according to engineering principles and OHS regulations.
At the time of publication of this product data sheet all previous ones become void.
Date of update: 2015-03-16