Sika Dustproofer Concrete Hardener Int Ext 5 Litre 879841

Sika Dustproofer and Concrete Hardener Int Ext 5 Litre

Barcode: 5029347004354

MPN: 879841

Colour: Clear

Overview:

Sika Dustproofer and Concrete Hardener for Internal and External Use in a  5 Litre tub,  a clear penetrating treatment designed to strengthen concrete surfaces and reduce dusting in busy environments. Ideal for new or existing concrete, it soaks into the substrate to help harden the surface, improving resistance to wear, abrasion and daily traffic.

This makes it a practical choice for warehouses, workshops, garages, basements and storage areas where dust and surface breakdown are a common problem. Suitable for internal and external use, it helps create a cleaner, lower-maintenance concrete finish while retaining the natural appearance of the floor (often with a subtle sheen).

Key Features

• Penetrating dustproofer to help reduce concrete surface dusting

• Hardens the surface to improve abrasion and wear resistance

• Suitable for internal and external concrete floors

• Helps create cleaner, lower-maintenance surfaces in high-traffic areas

• Ideal for new or existing concrete (properly prepared)

• Can be applied by brush, roller or sprayer

• Clear finish maintains the natural look of concrete (may add slight sheen)

• Approximate coverage: up to 5m² per litre (surface dependent)

Specifications

• Brand: Sika

• Product Type: Concrete dustproofer and surface hardener

• Size: 5 Litre

• Colour: Clear

• Coverage: Approx. 5m² per litre (dependent on porosity/condition)

• Application Methods: Brush, roller or sprayer

• MPN: 879841

• Barcode: 5029347004354

Applications

• Warehouses and factories with frequent foot traffic and equipment movement

• Commercial garages, workshops and service bays

• Home garages, basements and utility areas

• Storage facilities and plant rooms

• External concrete surfaces where reduced dusting and improved durability are needed

How to Use

• Ensure the concrete is clean, sound and dry; remove oil, grease, coatings, laitance and loose debris.

• Apply evenly by brush, roller or sprayer, working the liquid into the surface for consistent coverage.

• Allow to soak in and cure fully (typically 24–48 hours depending on conditions).

• Check the finish; very porous surfaces may benefit from a second coat once the first has dried.

• Keep the treated area free from traffic during curing for best results.

Sika 879841 Dustproofer and Concrete Hardener 5 Litre – Key FAQs

• Is it suitable for outdoor use?
  Yes, it can be used on both internal and external concrete surfaces, provided the substrate is suitably prepared and conditions allow proper curing.

• Does it change the appearance of the concrete?
  It maintains the natural look of concrete and may leave a slight sheen depending on surface finish and porosity.

• How long does it take to dry?
  Typical curing time is around 24–48 hours, but this will vary with temperature, humidity and the condition of the concrete.

• Can it be used on new concrete?
  Yes, it’s suitable for new or existing concrete once the surface is properly prepared and ready to accept treatment.

• What coverage can I expect from a 5L container?
  Coverage is approximately 5m² per litre, so a 5L tub can cover around 25m² depending on surface porosity and condition.

• Will I need to reapply it?
  In high-traffic areas, periodic reapplication can help maintain performance. The frequency depends on use and wear.

• What surfaces can it be used on?
  It’s designed for concrete floors and slabs in garages, warehouses, basements, workshops and similar areas.

Manufacturers Documents

“Always read the official Sika Dustproofer and Hardener Technical Data Sheet prior to use, as guidance and instructions may change.”