Special Finishes

Architectural and Decorative Coating Specialists

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Sealkote 50S

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Sealkote 50S is a clear chemical aqueous solution incorporating blends of water repellent additives, including a high performance silicone designed to penetrate and bond to the surface of bricks, Hardiflex, blocks, concrete, concrete roof tiles - and will react with Calcium Oxide in cement, forming crystallised water shedding properties.


  • Clear films with excellent waterproofing properties
  • Permeability allows the substrate to breath
  • Preservation of buildings
  • Protects from efflorescence
  • Sealkote 50S has been suitably formulated to allow excellent adhesion of subsequent paint systems being applied to the surface.
  • Prevents the formation of mould and algae


Sealkote 50S is used to waterproof concrete, brick, tile roofs, limestone buildings, churches, schools, museums, shopping complexes and large commercial buildings.


Clear, natural, non-gloss finish


By roller, spray, airless spray, spray pump.


Apply over dry surface and by totally flooding substrate.

Dry Time:

Allow minimum of 24 hours for Sealkote 50S to react (before rain fall), and 3-7 days for full cure and development of full efficiency.


Apply at 2-5 m² per litre, depending on substrate porosity.


Do not dilute Sealkote 50S (use as supplied).

Clean Up:



Due to Sealkote 50S' high alkalinity, it should not be applied with any equipment comprising of aluminium or light alloys.  Avoid over-spraying onto aluminium, joinery, door frames, wood, or any light alloys.  Avoid any over spray on glass - it may etch onto surface.

Health and Safety:

Avoid contact with skin, eyes, etc.  Wash immediately with water.  For eyes wash with copious amounts of water and consult Doctor for medical advice.


Use gloves, overalls, goggles, etc.  Spraying in confined areas use correct breathing respirator.


Warranty / Liability

Special Finishes (NZ) Ltd provides all the enclosed information in good faith but without warrantee and is to assist your application. However the use of this product being used is beyond their control. The manufacturers can accept no responsibility whatsoever for any damage or failure arising from its application or use. It is totally the responsibility of the user to insure that the product is suitable for its intended use.