SIKAWALL-140 SKIM COAT WHITE KH – SKIM SMOOTHING RENDERING POWDER FOR EXTETIOR WALL AND CEILING
Description
SikaWall-140 Skim Coat White KH is a specially formulated, ready-to-mix skim coat designed for leveling uneven surfaces and concealing minor blemishes in concrete. This versatile mix delivers a smooth, polished finish that’s perfect for interior and exterior applications, making it a must-have in the world of construction. Its primary uses include:
- Traditional rendering
- Shuttered concrete
- Reinforced concrete shellwork
- Concrete soffits
- Precast concrete panels
Moreover, it’s compatible with various covering materials such as thick synthetic finish coats, mineral paint, wallpaper, fabric, and bonded plastic coverings.
Advantages
When it comes to SikaWall-140 Skim Coat White KH, it’s all about perfection and convenience:
- Smooth finishing: Achieve that flawless surface every time.
- Eliminates minor surface blemishes: Say goodbye to imperfections.
- Can be exposed or covered: Versatility for all your construction needs.
- Excellent trowel ability: Get the job done with ease.

Product Information
- Composition: Hydraulic binder, mineral filler, aggregate, and admixtures.
- Packaging: 20 kg/bag
- Appearance/Colour: White powder
- Shelf Life: 12 months from the production date when stored in undamaged and unopened, original sealed packaging.
- Storage Conditions: Store in a dry environment and protect it from direct sunlight.
- Density: 0.9 – 1.1 kg/L
- Maximum Grain Size: 0.3 mm
- pH-Value: ~12
Technical Specifications
Here’s a quick reference to the essential technical specifications of SikaWall-140 Skim Coat White KH:
| Property | Value |
|---|---|
| Tensile Adhesion Strength | ≥ 0.5 MPa at 28 days |
| Mixing Ratio | Approx. 7.0 to 7.5 liters of water per 20 kg bag |
| Consumption | Approx. 1.3 kg/m2 per 1 mm thickness |
| Layer Thickness | 0.5 – 2.0 mm |
| Ambient Air Temperature | +5°C to +35°C |
| Pot Life | Approx. 120 minutes (at 25°C) |
| Initial Set Time | Approx. 240 minutes (at 25°C) |
| Waiting Time to Overcoating | ~3 – 7 days |

Construction Instructions
To unlock the full potential of SikaWall-140 Skim Coat White KH, follow these step-by-step construction instructions:
Substrate Quality/Pre-Treatment
- Ensure that the surface is clean, dry, and free from dust, oil, and paint.
- For new concrete, allow it to dry for 3 to 7 days, depending on climate conditions before application.
- Remove any seams or edges that exceed the required thickness.
- If the substrate has many pores, apply the first coat to fill them, making subsequent layers easier and quicker.
- Dampen the substrate before application.
Mixing
- Mix 20 kg of SikaWall-140 Skim Coat White KH with 7 – 7.5 liters of water until the product is evenly distributed.
- Small quantities can be mixed with a paddle for at least 3 minutes, while larger quantities benefit from a machine operating at 500 rpm.
- Allow the mixture to stand for 1 – 3 minutes, and do not add water after mixing.
Application
- Apply the first coat of the mixed product with a trowel. It’s recommended to apply a minimum of 2 coats: the first to level the substrate and the second to finish. Additional coats can be applied as needed to reach the desired thickness or texture.
- If there are too many pores on the substrate, apply the first coat to fill them first, making the application of subsequent layers easier and quicker.
- Allow each coat to dry sufficiently for 10 – 45 minutes.
- For a polished finish, you can use sandpaper no. 380 on the surface.
- Allow 3 – 7 days before applying covering material.
Local Restrictions
- Please note that specific local regulations may affect the data and recommended uses for this product. Consult the local Product Data Sheet for precise information based on your location.

Legal NotesThe information and recommendations regarding the application and use of Sika products are given in good faith and based on Sika’s current knowledge and experience. While every effort is made to provide accurate information, it’s essential to test the product’s suitability for your intended application. Sika reserves the right to modify product properties, and the rights of third parties must be respected. Always refer to the most recent local Product Data Sheet for the product in question.In the realm of construction, achieving perfection is the ultimate goal, and SikaWall-140 Skim Coat White KH is your partner in this journey. With its exceptional characteristics, it not only conceals imperfections but also provides a smooth canvas for your creative touch. Unlock perfection with SikaWall-140 Skim Coat White KH, and redefine the way you approach construction projects.



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