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Renders & Plasters

Hydrophobicity is a key characteristic for increased weather resistance.

WACKER offers binders and additives for a variety of plasters, including cement-bound, silicone resinbound and ready-to-use dispersion-based plasters. WACKER products improve important characteristics of plasters and renders such as workability, adhesion, flexibility, mechanical resistance, hydrophobicity or weatherability.

In silicone resin plasters and organosilicate plasters, SILRES® BS silicone resin binders and water-repellent additives make valuable building blocks for protecting and preserving buildings. The functional silicone resin network renders the capillaries water-repellent: water forms beads and rolls off, but the pores remain open to diffusion.


  • High water repellency
  • Water-vapor permeability
  • Good weather resistance
  • Longlasting esthetic appeal
  • Good energy efficiency

By improving the cohesion and flexibility of the hardened mortar, VINNAPAS® provides plasters with an improved impact and crack resistance.

VINNAPAS® dispersible polymer powders improve the quality and increase the life expectancy of renders and plasters. They enhance adhesion on a variety of different substrates and reduce the cracking tendency. They improve the workability of the fresh plaster and allow a good water-vapor permeability of the hardened plaster. Specific VINNAPAS® dispersible polymer powder grades are available to increase hydrophobicity and prevent weathering damages.


  • Improved adhesion to a variety of different substrates
  • Improved abrasion resistance
  • Enhanced hydrophobicity (using a VINNAPAS® H class polymer powder)
  • Very good weatherability
  • Improved impact resistance
  • Low cracking tendency

Application Spectrum:

  • Indoor walls
  • Facades

VINNAPAS® polymer dispersions improve the characteristics of sythetic resin-bound, ready-to-use renders and plasters.


  • Optimum workability
  • Optimum application safety
  • Hydrophobic properties
  • Control of open time
  • Reduced dirt-pick up
  • Possibility for a wide color range

VINNAPAS® polymer binders improve the adhesion, flexibility and workability of skim coat. The results are increased adhesion of paints as well as weathering resistance and longevity of building facades.


  • Enhanced flexibility
  • Long lasting hydrophobicity
  • Smooth surface for efficient paint coverage
  • Durability of facades
  • Excellent bonding on different substrates
  • Very good bonding of the color

Application Spectrum:

  • Interior and exterior applications
  • All types of substrates: concrete, lightweight concrete, block work, bricks, AAC blocks, rendered surfaces, cement fiber board, etc.

VINNAPAS® polymer powders help to improve the overall performance of diatom ooze. Specific grades allow the formulation of low-VOC, highly flexible, crack resistant products.


  • Extremely low VOC content
  • Odorless
  • Especially fine particle size
  • Improved crack resistance
  • Improved wet scraping resistance
  • Outstanding bonding strength

Application Spectrum:

  • Mineral and non-mineral substrates

VINNAPAS® polymer binders are used in thermal insulation renders to improve the adhesion as well es the overall performance.

Thermal insulation renders are applied 2 - 10 cm thick according to the required insulation performance. The thermal insulation render is topped with a 3 - 5 mm thick reinforcement layer and a 1.5 - 3 mm thick top coat.


  • Improved adhesion between the mineral binder and the light-weight components (EPS)
  • Increased adhesion to the substrate and the top render
  • Better workability
  • Higher flexibility
  • Optimized tensile adhesive and flexural strength
  • On-demand water repellency and thixotropy

For water-based plasters WACKER offers CAVAMAX® / CAVASOL® fragrance complexes, consisting of an essential oil encapsulated in a cyclodextrin. Under the action of moisture, the fragrance is released from its molecular inclusion complex and adds an additional feature to the plaster.