SILRES® BS 1306 may be added undiluted to aqueous masonry coatings and primers either during after manufacture. We recommend adding 1 wt% to masonry coatings and 5 wt% to primers.

SILRES® BS 1306 can also serve as a water-repellent primer, in which case it should be diluted 1:9 parts by weight with water. When such primers are required to strengthen the substrate, we recommend adding a polymer dispersion in hydrosol form.

For the impregnation of insulating materials, we recommend diluting SILRES® BS 1306 with water in the ration 1:100 to 1:200 parts by weight.

SILRES® BS 1306 is an additive used in the manufacture of aqueous masonry coatings and aqueous primers to enhance water repellency, water resistance and water-vapour permeability. It also improves the processability and antiblock characteristics of the aqueous coatings.

Suitable for:

  • silicone resin emulsion paints and silicone resin plasters
  • silicate emulsion paints and plasters
  • highly filled emulsion coatings
  • whitewash emulsions
  • stoppers
  • reinforcing stoppers
  • aqueous facade primers
  • insulating materials

SILRES® BS 1306 may also be thinned with water for use a water-repellent primer on material substrates and as a water repellent for in-plant manufactured insulation materials.


The "Best use before end" date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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