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Boards & Panels

Building with gypsum and fiber cement boards is fast and flexible. To additionally ensure a high quality standard, VINNAPAS® polymer binders are used to enhance the characteristics of mortars, plasters and joint fillers in these applications. SILRES® BS silicone resins are ideal for hydrophobization.

Thanks to its favorable carbon footprint, gypsum contributes significantly to sustainable construction. However, gypsum is water-soluble. VINNAPAS® dispersible polymer powders and SILRES® BS products help to compensate for this disadvantage.

Cement fiber boards, backer boards and fire-resistant boards are treated with SILRES® BS products to reduce the capillary water absorption by post- or bulk-impregnation.

Benefits

  • Increased freeze/thaw resistance
  • Better dimensional stability in wet areas
  • Prevention of premature drying of plasters, mortars and tile adhesives through optimal water retention
  • Reduced water absorption of lightweight fillers
  • Prevention of additional water ingress at cut edges by integral hydrophobization
  • No paint peeling (siloxane used as primer)

Product Recommendations

Table is scrollable
Products
Technical data
Suitability
Viscosity, kinematic Appearance
Boards & Panels
Fiber Cement Boards
SILRES BS 17040 US - - - - - -
SILRES BS 17040 US - - - - - -
SILRES BS 1705 BR - - - - - -
SILRES® BS 1603 CN 130 - 300 mm²/s[1] 130 - 300 mm²/s[1] clear, colorless to slightly yellow[2] clear, colorless to slightly yellow[2] - -
SILRES® BS 1701 - - - - - -
SILRES® BS 1703 SQ 130 - 300 mm²/s[1] 130 - 300 mm²/s[1] clear, colorless to slightly yellow[2] clear, colorless to slightly yellow[2]
SILRES® BS 1705 - - - - - -
SILRES® BS 3003 - - - - - -
Legend
[1] Viscosity, kinematic | DIN 51562-1 ,  [2] Appearance and color,  [] Suited,  [] Well suited,  [] Ideally suited 

To improve the poor moisture resistance of gypsum, SILRES® BS polymethylhydrosiloxane emulsions can be used for water-repellent treatment. Thanks to the chemical interaction between the gypsum crystals and the silicone, these materials provide far more efficient protection than organic water repellents.

Enhancing wallboard:

Used as admixture with significant benefits over wax additives (for all wallboard plants)

Enhancing fiberboards:

Surface treatment with excellent hydrophobic properties

Product Recommendations

Table is scrollable
Products
Technical data
Suitability
Refractive index Appearance
Boards & Panels
Gypsum Wallboards and Gypsum Fiberboards
SILRES BS 2410 A - - - -
SILRES® BS 16 - - - - - -
SILRES® BS 94 approx. 1.396 approx. 1.396 colorless liquid colorless liquid - -
Legend
[] Suited,  [] Well suited,  [] Ideally suited 

VINNAPAS® dispersible polymer powders are used as binders in gypsum plasters and fillers to improve manual and machine processing, reduce the water uptake and increase the flexibility, making for smooth, crack-free surfaces. Grades without plasticizers support the formulation of low-emission end products.

Benefits

  • Outstanding tensile adhesive strength on gypsum plasterboard and jointing tapes
  • Excellent workability
  • Particularly smooth, level surface devoid of cracks or crevices
  • Reduced water uptake
  • Plasticizer-free products available

Reduction in the Water Absorption of a Gypsum Joint Filler

Between x and y weight percent SILRES® BS POWDER G is added to a commercially available gypsum joint filler (left-hand bar). The test specimens obtained were then immersed in water for two hours. The chart shows how much water by weight percent was absorbed by the test specimens.

SILRES® BS POWDER G is an additive for waterproofing gypsum-based dry-mix mortars. It is an active substance in solid form and low in volatile organic compounds. SILRES® BS POWDER G can reduce the water absorption of gypsum powder products by more than 90% applying a dosage rate of 0.5 weight percent.

Benefits

  • Good water-repellency
  • Easy handling and storage

Product Recommendations

Products
Technical data
Product properties
Suitability
Minimum film forming temperature Specific Features
Wall and Joint Fillers
SILRES® POWDER G - - -
VINNAPAS® 4023 N (GER) 1 °C[1] 33.8 °F[1] -
VINNAPAS® 4115 N (GER) 4 °C[1] 39.2 °F[1] - -
VINNAPAS® 4121 N 1 °C[1] 33.8 °F[1] - -
VINNAPAS® 5005 N 11 °C[1] 51.8 °F[1] - -
VINNAPAS® 5010 N (CTY) 4 °C[1] 39.2 °F[1] -
VINNAPAS® 5010 N (GER) 4 °C[1] 39.2 °F[1] -
VINNAPAS® 5012 T 4 °C[1] 39.2 °F[1] -
VINNAPAS® 5028 E (CTY) 4 °C[1] 39.2 °F[1] -
VINNAPAS® 7031 H 0 °C[1] 32.0 °F[1] Hydrophobic -
Legend
[1] Minimum film forming temperature | DIN ISO 2115,  [] Suited,  [] Well suited,  [] Ideally suited