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Estotect SWR

A Surface Water Repellent and Waterproofer

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Estotect SWR is a single component penetrating silane-siloxane system which penetrates into porous substrates and then reacts to produce a bonded hydrophobic lining to the pores. Although allowing passage of water vapour from the substrates it significantly reduces the absorption of water and water borne salts.

Estotect SWR does not discolour most substrates and has excellent resistance to weathering.


Estotect SWR ia a silane-siloxane based surface water repellent and waterproofer for the invisible protection of brickwork, cement plaster, concrete etc., including limestone and chalks. It is particularly useful for dipping precast work, tiles etc.

Unlike the normally available silicone water repellents, Estotect SWR is suitable for application on damp surfaces.


  • Deep invisible penetration
  • Fully water repellent in 24 hours
  • Colourless and does not affect the original appearance
  • Allows walls to breathe
  • Minimises efflorescence
  • Good water repellency of up to 10 years
  • Can be applied on damp surfaces

Standards Compliance

  • BS 3826:1969

Test Results

Material Exposure Time Water Absorption
Control Treated
Common Brick 24 hrs
170 hrs

Application Instructions

Surfaces to be treated should be clean, free of stain and efflorescence. The application of Estotect SWR may be by brushing or spraying. When spraying is preferred, use a low pressure spray that will give a non atomised stream of liquid. When brush application is adopted allow for a run down of approximately 30 – 35 cm.


Estotect SWR requires 24 hours of exposure to the atmosphere before it becomes fully effective, hence it should be applied in dry weather conditions.

Do not allow the material to be in contact with aluminium, glass and porcelain. Protect such areas before application.

Before application on neutral stones, carry out a test to observe any deleterious effects of iron staining.

Packing & size

Estotect SWR 20 Litre Pail
210 Litre Drum


Estotect SWR 2.8m⊃ – 4.6m² per litre depending on the porosity of the surface.

One coat usually all that is necessary. However, on highly absorbent surface, a second coat is advisable.

Technical Support

Estop offers a comprehensive range of high performance, high quality products suitable for use within all aspects of the concrete repair and protection industry. In addition, the company offers technical support package to specifiers, end users and contractors, as well as on-site technical assistance all over the world.


Store in dry areas. Do not expose the material to air during storage. Effective shelf life is 12 months.


Avoid contact with eyes, mouth and nose. Provide efficient and adequate ventilation during application.

Additional Information

Estop manufactures and offers a wide range of complementary products which includes waterstops, waterproofing products, grouts, anchors, specialized flooring products. In addition, a wide range of products formulated for repair and refurbishment of spalled concrete are available.