Browse our products by application OR simply search for a product by name:

Logo of Graf Chemicals

Silsan® Powders

By Graf Chemicals arrow Visit Website

Silicones on a Powder Carrier

A hand laying a brick down

Product Overview


Silanes and siloxanes are useful tools in the hydrophobisation (water repellence and durability) of construction materials and facade coatings. These surfaces require a durable solution whilst not affecting their appearance. 

Many construction materials are delivered in dry form and diluted with water shortly before application. The addition of liquid water repellents at this point would be time-consuming and a potential source of error. Ideally, the dry mixed material should already contain the water repellent. This is the purpose of our range of Silsan® impregnating powders, which are comprised of silicone water repellents on a powder carrier. Once diluted with water and applied they develop their water-repellent effect in the construction material without reducing its water vapour permeability.


Brochures & Technical Literature

Silicone Impregnating Powders Brochure

An overview of the Graf powder impregnating range for the dry mix construction industry.

download Download PDF 311 KB

icon Request a Sample

At Lawrence Industries we hold a wide range of sample products in our office allowing us to dispatch them on the day you request them.

Request a Sample

icon We Can Assist You Today

Please fill out our short form and one of our technical sales team will be in touch within 24 hours. If it is urgent then please call us on 01827 314151.

Request a Callback
Product Features
  • Water wettable white powder
  • Comprised of water-repellent silanes and siloxanes on a powder carrier
Product Benefits
  • Good water solubility allowing for easy incorporation and elimination of powder bubbles
  • Excellent water beading
  • Low soiling tendency
  • Very low water absorption with high water vapour permeability
  • Reliable, durable, water repellency
Typical Applications
  • Dry mixes based on lime, cement, synthetic resins, gypsum and water glass
  • Mortars and adhesives
  • Tile fillers
  • Cement and silicate-based paints

Featured grades with technical datasheets

A brief overview of the key grades with their Technical Datasheets (TDS) is given below.

If you are looking for a Safety Datasheet (SDS), Product Safety Information (PSI) or an alternate grade, then please get in touch or request a sample.

Key points at a glance:

  • Water-repellent mixture of silanes and siloxanes on a powder carrier
  • Excellent beading effect and low soiling tendency in the final product
  • Very low water absorption with a high water vapour permeability
  • Good water solubility makes it easy to blend, eliminating powder bubble formation
download Silsan® P 22 Technical Datasheet 67 KB