AquaStop Silicon Sealer

Nutech AquaStop Silicon Sealer is a single pack concrete, masonry and terracotta sealer has been developed for alkaline and non alkaline building materials to impart water repellency to absorbent materials.

The sealer is water dilutable and produces rapid surface water repellency producing a beading effect within a few hours and complete curing within 24 hours.

Applications & Features

Nu-tech Aqua-Stop Silicon Sealer is an impregnating agent suitable for a wide range of porous substrates.

Complete cross-linking is developed within several days of application, providing total resistance to alkalis and water.

Features of Aqua Stop Silicon Sealer include:

  • Very good penetration capacity
  • Extremely high alkali resistance
  • Tack free drying
  • Application to slightly moist surfaces possible
  • Non glossy natural finish
  • Non-yellowing
  • Does not affect surface colour or texture
  • Rapid development of water resistance

Typical Projects Include:

  • Bluestone
  • Concrete
  • Mineral plaster
  • Cement sheet
  • Limestone
  • Sandstone, masonry and rendered surfaces.

Application Guide

Application by spray, brush, broom or roller is suitable.

The solution should be applied to saturation without pressure and in several (2-4) coats.

Test Patch

It is essential that you test on Terracotta and Bluestone pavers before using to ensure that the original colour and appearance is unchanged.

The reaction of Nutech Aquastop Silicon Sealer on different brands and batches of pavers will vary greatly and individual jobs should be thoroughly tested before sealing whole jobs.

A number of pavers on every specific job should be individually tested to satisfy the client that the sealed appearance of the Pavers is satisfactory.


Application guidelines are provided below;
Concrete: 0.3 – 0.5 L/m2
Plaster: 0.5 –1.0 L/m2
Lime/Sandstone: 0.4 – 0.7 L/m2
Brick Wall: 0.4 – 2.0 L/m2
Cement Sheet: 0.1 – 0.3 L/m2
Natural Stone 0.1 – 0.3 L/m2
Aerated Concrete: 0.5 – 2.0 L/m2
Terracotta: 1.0 – 4.0 L/m2

The container should be stored at temperatures not exceeding 30°C and protected from direct sunlight.

Stored correctly the product has a shelf life of 2 Years.


This product is not suitable for plaster of paris

Avoid contact with all forms of glass including windows and windscreens.

Refer to Nutech Material Safety Data Sheet for additional safety and user information.

Ponding, pooling or runs in the sealer during application may result in a patchy or unattractive appearance.

If ponding occurs mopping or washing immediately with water will disperse the product.

AquaStop Silicon Sealer
Quick Reference


Milky white liquid


9.0 to 10.0



Coats Required:

The solution should be applied to saturation without pressure and in several (2-4) coats.

VOC Levels:


Repaint Time:

12 to 24 months




Clear Finish

Deep Penetrating


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Download AquaStop Silicon Sealer TDSDownload AquaStop Silicon Sealer SDS
Important Notice

The information given in this data sheet is based on many years experience and is correct to the best of our knowledge. However as the use of our product is beyond our control we can only be responsible for the quality of our product at the time of dispatch. For additional information about specifications or application please contact our company. As this information is of a general nature we cannot assume responsibility for individual use.