Silicon Sealer

Nutech single pack Silicon 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 solvent dilutable and produces rapid surface water repellency producing a beading effect within a few hours and complete curing within 24 hours.

Recommended for concrete and Terracotta floors and roof tiles.

Applications and Features

Nutech Silicon Sealer is an impregnating agent suitable for a wide range of porous substrates. Complete cross-linking is developed within 24 hours of application, providing resistance to alkalis.

Typical Features:

  • Excellent penetration capacity
  • Extremely high alkali resistance
  • Tack free drying
  • Application to slightly moist materials possible
  • Non glossy natural finish
  • Non-yellowing
  • Does not affect surface colour or texture
  • Fast drying & rapid development of water resistance

Typical Uses of Silicon Sealer:

  • Concrete
  • Mineral plaster
  • Cement sheet
  • Limestone
  • Sandstone
  • Brick masonry
  • 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 pavers before using to ensure that the original colour and appearance is unchanged.

The reaction of Nutech 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:
Concrete & Terracotta: 0.3 – 0.5 L/m2
Plaster: 0.5 – 1.0 L/m2
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


The container must be stored at temperatures not exceeding 30 degrees Celsius and protected from direct sunlight.
Containers must be sealed airtight as the Silicon Sealer reacts with atmospheric humidity.

Shelf Life

Stored correctly the product has a shelf life of 6 months.


Do not apply the Silicon Sealer late in the day as the risk of surface damage caused by dew and condensation increases.

Sealer affected by moisture may appear milky.

Do not use Silicon Sealer on Bluestone. Refer to AquaStop Silicon Sealer

Mop or broom to remove all excess sealer immediately after application.

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 Nutech Thinners will disperse the product.

Safety Precautions

Silicon Sealer contains flammable solvents and suitable safety precautions must be taken during handling and application.

Ensure adequate ventilation if applying in enclosed spaces.

Avoid contact with naked flames, sparks, pilot lights and other sources of ignition.

Avoid contact with eyes and skin.

Avoid contact with all forms of glass, including windows or windscreens as the sealer will chemically adhere to the surface and can not be removed.

Read “Safety Directions” and “First Aid’ instructions on this container.

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

Silicon Sealer
Quick Reference


Clear viscous liquid



Coats Required:

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

Repaint Time:

12 to 24 months


Highly (>95% Volatiles)


Clear Finish

Deep Penetrating


Related Products:

Download Silicon Sealer TDSDownload 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.