Sealit Multipurpose

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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.

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.

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.


  • Tested to ASTM E514.74 - Rated 'E' for excellent on water permeance
  • Excellent adhesion
  • Cost effective and gives long lasting protection
  • Highly flexible
  • Waterborne for easy application and clean-up
  • Safe to use with minimal vapour
  • Dries to a clear, low-sheen finish
  • May be painted over with any acrylic based paint

Suitable For

Clay & masonry bricks / blocks
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

Sealing Tanks, Troughs and Ponds


Concrete structures such as water tanks, water troughs and ponds will often develop leaks over time. Small or seeping leaks can be difficult to detect, especially when the structure is underground.  Dark patches in the concrete or algal growth often identifies problem areas.


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Sealing Single Leaf Masonry


Sealit Multipurpose is an effective waterproofing solution for single leaf masonry construction.


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Customers are advised to consider the information in this data sheet in the context of how the product will be used, including surfaces and any other products used. The information provided in this data sheet represents our best scientific and practical knowledge. Any advice, information or assistance provided by Shalex in relation to its products is given in good faith, however, is provided without liability or responsibility. Due to the wide variety of site conditions we are unable to assume liability for any loss that may arise from the use of our products. The user is responsible for checking the suitability of products for their intended use.

Shipping Information

Sealit Multipurpose is a water based sealer and not classified as a dangerous good for transportation. We can ship this product to all areas via postal services and have express courier options for selected locations. Add this product to your cart and use the estimate shipping and tax feature to view shipping charges to your location.

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