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Hydrophobic Impregnation

A comparison of capillary water uptake: the untreated substrate absorbs water (left picture). When hydrophobic impregnation is applied, the water beads off (right picture).

With SILRES® BS, WACKER offers hydrophobic impregnations that siliconize the pores of mineral substrates. Unlike film-forming coatings, organosilicon-based water-repellent agents do not block pores, and so maintain the breathabilityof the substrate. At the same time, water can no longer penetrate into capillaries in liquid form, since, as a polar liquid, it is unable to interact with the non-polar hydrophobic surface.

Benefits:

SILRES® BS has a good penetration depth. Because it is not film-forming, water vapor can escape.

Reduction of capillary water uptake by at least 80%:

  • Low capillary water uptake is the most efficient protection against rain and damp
  • Hydrophobic impregnation reduces water uptake and retains water vapor permeablity

Extremely long-lasting protection from water due to:

  • High penetration depth
  • Sufficient resistance to alkalis
  • UV stability
  • Freeze-thaw resistance

Film-forming systems (coating and impregnation) will not be permeable to water vapor. Water penetrates at damaged areas and causes further deterioration.

Application:

  • Brick, mortar
  • Sand-lime brick
  • Sandstone
  • Marble, limestone
  • Granite
  • Mineral plaster

Product Recommendations

Table is scrollable
Products
Technical data
Content Appearance
SILRES® BS 1001 - - - -
SILRES® BS 2002 - - - -
SILRES® BS 280 approx. 100 wt. %[1] approx. 100 wt. %[1] clear to hazy, colorless[2] clear to hazy, colorless[2]
SILRES® BS 280 CF approx. 100 %[1] approx. 100 %[1] colorless, hazy colorless, hazy
SILRES® BS 290 approx. 100 wt. %[1] approx. 100 wt. %[1] colorless, hazy colorless, hazy
SILRES® BS 290 CF approx. 100 %[1] approx. 100 %[1] colorless, hazy colorless, hazy
SILRES® BS 3003 - - - -
SILRES® BS 4004 - - - -
SILRES® BS CREME D - - - -
SILRES® BS CREME F - - - -
SILRES® BS SMK 1311 100 wt. %[1] 100 wt. %[1] clear clear
Legend
[1] Silane-/Siloxane content,  [2] Appearance clear to hazy, colorless,  [] Suited,  [] Well suited,  [] Ideally suited 
SILRES® BS protects against water, salts and grime. Water vapor can escape despite the water-repellent hydrophobic impregnating agent.

How hydrophobic treatment of open pore, heavy clay ceramic works - SILRES® BS protects against water, salts and grime. Water vapor can escape despite the water-repellent hydrophobic impregnating agent.

Applications:

  • Roof tiles
  • Facing bricks
  • Floor tiles
  • Flowerpots

Product Recommendations

Table is scrollable
Products
Technical data
Content Appearance
SILRES® BS 16 - - - -
SILRES® BS 17 approx. 100 wt. %[1] approx. 100 wt. %[1] clear clear
SILRES® BS 2002 - - - -
SILRES® BS 3003 - - - -
Legend
[1] Silane-/Siloxane content,  [] Suited,  [] Well suited,  [] Ideally suited