Concrete Sealer WB 403

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Concrete Sealer WB 403

Concrete Sealer WB 403

Concrete Sealer WB 403 has been formulated to replace standard, solvent based sealers for indoor use. It's low VOC is an excellent alternative in confined areas or areas with low little ventilation. It is a hardwearing clear coating and is recommended for coloured, stamped, polished and exposed aggregate surfaces. When cured it provides a smooth washable surface that will keep the surfaces dry and protect from stains and spills. It will enhance the natural colour of the concrete, enhancing coloured oxides and aggregates and provides a satin finish.

Concrete Sealer WB 403 may be applied over damp surfaces and newly laid or ‘green’ concrete and is suitable for interior or exterior use. It cures after 72 hours and provides excellent chemical and water resistance and extended exterior durability. Wet on wet application is possible where projects need to be completed in a short time, simply allow the coating to turn clear before applying subsequent coats.


  • High quality satin finish
  • Low VOC for indoor use
  • Protects from stains and spills
  • Hard wearing film

Coverage rate 1L = 5m²

Note – surfaces should be pre-wet when applying in hot or windy conditions. Follow application instructions carefully to avoid premature drying and possible delamination.

Concrete Sealer WB 403 may become slippery when wet on some surfaces such as smooth pavers and terracotta or ceramic tiles. An anti-slip powder (click here to buy) can be added to the final coat to increase texture and reduce slip hazards when used on steep grades or surfaces subject to frequent wetting with water.


  No. of coats:

 2 - 3


 1L = approx 5m²

  Drying Time:

 2 - 4 hours

  Fully Cured:

 3 days

  Clean Up: 

 When wet: Water

 When dry: Solvent

  Shelf Life: 

 12 - 18 months

  Store Below:


  Application Temperature (Surface):

 10°C - 35°C


 Low pressure sprayer, brush, lambswool pad or roller

Application Guide

Data Sheet