Weber Saint-Gobain - Official website of the company

weberpral K

formerly Decofacade.242 CP

weberpral K
weberpral K

Product benefits

  • Scraped (Stone aspect)
  • A vast range of colors coping with architectural requirements
  • Suitable for application by wet mortar pump

Decorative single layer render

weberpral K is a colored waterproofing and decorative mortar made of hydraulic binders, additives as hydrophobic and water retention agents and pigments. A special selection of graded quartz sand and fillers contribute to unique workability properties while giving an exceptional aesthetic appeal to the product.
It can be applied on concrete, cement, render, brick, block work.

Product Features

Scope of use

  • Waterproofing and decorative render for the facades of detached houses, blocks of flats, office and industrial buildings.
  • Suitable for creating stone piers, cornices, cills, windows or door recesses,which can be enhanced by using ashlar detailing.
  • Exterior and interior walls.


Colors Various
Grain size < 2 mm
Paste density approx. 1.85


  • Dense concrete blocks and clay bricks
  • Concrete
  • Precast concrete blocks
  • Cement renders
  • Existing mineral render


Scraped finish masonry: 22 to 25 kg / m2 / 15mm thickness concrete or undercoat: 14 to 16 kg/m2/10mm thickness.

With a mortar pump 75 / 150 m2 per team per day for flat walls.

Detailed aspects will reduce the daily coverage.
These values are only guidelines and exact consumption is dependent on site condition and should be validated on the job


One year after manufacturing date in its original packing non open and in dry area.


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

Substrate must be clean, sound and free from greasy matters and dust. Remove all traces of paint, mould oil which may affect the adhesion. Before the application the substrate must be sufficiently cured in a way that any shrinkage has already occurred. On concrete and non-absorbent substrates use the appropriate weber.premix rush coat of Sodamco-Weber line.

Product application

The material has been designed for spray application

Apply the product in one coat (two passes) to a uniform thickness of 15 mm. When sufficiently hard, generally between 3-16 hours after application, the surface is scrapped.

Apply the product in one coat (two passes) to a uniform thickness of 10 mm. When sufficiently hard, generally between 3-16 hours after application, the surface is scrapped.

Limitation of application

• Do not apply on frozen or thawing surfaces or when frost is expected within 24 hours, in direct sunlight or when raining.

• Avoid application in damp / wet conditions to reduce the risk of efflorescence, especially with dark colours.

• Ideal application temperature + 15 °C to + 35 °C.

• Provide necessary protection (eg. shade netting) during and immediately after application.

• Curing with a fine mist of water is necessary in hot or quick drying conditions for 48 hours after application from bottom to top.

• Scaffolding should be independently tied to assist uninterrupted application.

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.

Safety precautions

The product contains cement powders which, when mixed with water, release alkalis that could be harmful to the skin. It is preferable to do the application a well ventilated area, to wear protective gear for hands, eyes and respiratory system and to avoid dust inhaling. Splashes on the skin should be washed away by cleaning with soap and water. In case of contact with eyes, wash thoroughly with clean water. If swallowed, do not induce vomiting. In both cases seek medical attention. The product is non-flammable.


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.