Sealit Multipurpose - Multipurpose concrete Sealer

Shalex SealIt Multipurpose is a water based general purpose clear waterproofing compound designed for use on a wide variety of substrates.

SealIt Multipurpose is especially suited to sealing and protecting porous vertical masonry surfaces such as split faced or decorative concrete blocks. 

SealIt is particularly effective against wind driven rain and unlike ‘water repellent’ style sealers, can withstand hydrostatic pressures caused by significant weather events. 

SealIt is UV stable and provides long term protection, for example 10 years or more.

SealIt Multipurpose dries to a clear low sheen finish and remains flexible to accommodate minor movement in the substrate.

SealIt can be over painted with any acrylic paint.

Due to exceptional adhesion SealIt is well suited as a primer for acrylic architectural topcoats, elastomerics and roofing paints.

As SealIt is a very soft sealer it is not suitable for use on horizontal surfaces that are subject to traffic (e.g. paths, pavers, floors etc) unless they are to be covered with tiles, carpet, or harder coatings.


With difficult to wet out surfaces, hot surfaces, or in very hot and windy conditions, the application of a very fine mist spray of water over the surface may help absorption prior to application of the primer coat.

The surface should be just damp, not wet.

Place drop sheets down on floor surfaces to ensure no run-off or drips occur when applying SealIt Multipurpose to walls.


SealIt Multipurpose is not designed as a final coating for horizontal / trafficable areas and should be covered or over-coated.

Allow at least 24 hours (at 24°C) to dry before applying screeds, tiles or any other coatings or coverings.


While SealIt Multipurpose is a water based waterproofing agent, we recommend the use of gloves when using this product.

The superior adhesion and water repellent properties of SealIt Multipurpose may cause ‘sticky hands’ even after washing well with soap and water.

  • Rated ‘E’ for excellent water permeance
  • Excellent adhesion
  • Cost effective, gives long lasting protection
  • Highly flexible
  • Waterborne for easy application and clean-up
  • Safe to use with minimal vapour
  • May be painted over with any acrylic based paint
  • Clay & Masonry Bricks / Block
  • Cement render
  • Concrete slabs
  • Wet areas
  • Fibre cement sheeting
  • Leaking Showers
  • Particle board flooring
  • Coloured masonry
  • Fishponds & troughs
  • Concrete tilt panels
  • Terracotta pots
  • Undercoats / sealer
  • Concrete ponds
  • Sealing screeds
  • Fibro roofs
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