Dow Corning Water Repellent Emulsions Protect Brick, Stone and Mortar from Deterioration

Midland, Mich. - April 18, 2006 - Dow Corning® IE-6683 and Dow Corning® 520 Water Repellent Emulsions protect porous construction materials, such as bricks, mortar, grout, stone, and aerated, autoclaved and light weight concrete blocks, from water damage.

Both products offer a 40 percent active, water-dilutable silicone emulsion that decreases water absorption in substrates to reduce cracking, spalling and surface erosion caused by freeze-thaw and mineral efflorescence. Dow Corning IE-6683 and 520 emulsions demonstrate extremely high durability against long-term exposure to moisture while permitting vapor permeability for use where breathable materials are required. They provide material protection without changing the original aesthetic appearance of applied substrates. IE-6683 emulsion produces high beading of water on most treated surfaces.

Dow Corning IE-6683 and 520 emulsions are low volatile organic compound (VOC) formulas, with less than 200 and 300 g/L respectively. Dow Corning IE-6683 can be used as supplied, diluted in water, incorporated into building materials or used as an ingredient in the formulation of water-repellent, water-based primers, paints and coatings. An active silane/siloxane emulsion, Dow Corning 520 is primarily an aftermarket application that can be diluted or used as supplied in the formulation of water repellent products.

Dow Corning Construction
For more than 60 years, architects, building consultants, contractors and construction material providers around the world have turned to Dow Corning for its expertise and its silicon-based, performance-enhancing materials and additives for glazing, sealing and weatherproofing new and existing construction projects. For more information about Dow Corning's complete line of products for the construction industry, contact

Dow Corning ( provides performance-enhancing solutions to serve the diverse needs of more than 25,000 customers worldwide. A global leader in silicon-based technology and innovation, offering more than 7,000 products and services, Dow Corning is equally owned by The Dow Chemical Company and Corning Incorporated. More than half of Dow Corning's sales are outside the United States


Regine de la Cruz
Tel: 609.304.0246

Nadine Heikamp
Tel: +32.2.645.98.38

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