Weber Saint-Gobain - Official website of the company

weberpas PR SIL

formerly Weber.pas prime - weber.prim Primer

weberpas PR SIL
weberpas PR SIL

Product benefits

  • Provides an even suction for the substrate
  • Ready to use
  • Easy to apply

A ready-to-use primer for the equalization and neutralization of the substrate

weberpas PR SIL is a ready-to-use primer made of organic components, alkali resistant pigments and additives. weberpas PR SIL is used for internal and external walls in association with weberpas deco, for the equalization and neutralization of the substrate before the application of weberpas deco and silicone-based wet renders.
It is available in white.

Product Features


  • Provides an even suction for the substrate
  • Readytouse
  • Easy to apply


12 months from production date in unopened buckets and kept in dry frost-free storage, under cover, off the ground and not in direct sunlight.


0.2 kg/m² - 100m²/20 kg pail


Suitable substrates include masonry surfaces e.g.cement renders, lime plasters, concrete or cement board and gypsum plasterboard.


Printable TDS (PDF)

Printable MSDS (PDF)


Send or download the documentation

You can either send the documentation to an email address, or download it.

Instructions for use

Surface preparation

  • Mineral and masonry substrates e.g. lime and cement plasters and cement renders must be completely dry and hard and free of shrinkage and movement.
  • Remove mould oil from concrete surfaces
  • For renovation the substrate should be free of old plaster and any loose material and peeling paint
  • Repaired areas of the surface should have the same strength and hardness as the existing substrate

Product application

  • Remove the lid and mix manually
  • Apply with a sponge roller or brush
  • 1 coat only
  • Cover the whole area
  • Allow to dry for 24 hours

Special recommendations

For neutralisation of the substrate apply weberpas PR SIL 1 day before application of weberpas deco

  • Ideal application temp 5ºC to 35ºC; protect from direct sun and rain during application
  • Use only clean tools
  • No water to be added

Environmental and Safety


While the company guarantees its products against defective materials, the use and application of these products are made without guarantee since the conditions of their application are beyond its control. It is recommended to verify with the company that the product is suitable for the intended use, and that this Data Sheet version is the latest one. The company may modify it without prior notice. Technical characteristics are listed for guidance only. For more information, please contact the company’s office in your location.

Quality assurance

weberpas PR SIL is quality controlled by Weber Management System.


The information included on this Technical Data Sheet is the sole property of SODAMCO Holding. The unauthorized disclosure, use, dissemination or copying (either whole or partial) of this data sheet or any information it contains, is prohibited and subject to legal pursuit.

Available packaging

Lebanon20 kg
Syria20 kg
Jordan20 kg
KSA20 kg
UAE20 kg
Qatar20 kg
Kuwait20 kg
Oman20 kg