Preparation

1.  The substrate should be clean, sound and free from loose material and contamination such as

     plaster, oil, paint and grease. The substrate should have a compressive strength of at least 20

     MPa and a surface tensile strength of at least 1MPa (pull-off strength).

2. Excess laitance should be removed by mechanical methods followed by vacuuming and water

    cleaning to remove dust debris.

3. Oil and grease can be removed by chemical detergent followed by water cleaning.

4. New concrete should be at least 14 days old.

5. In case of porous substrate or hot weather, the substrate should be ponded with clean water

    for 1~3 hours before priming.

Priming

The object of priming is to seal the substrate to prevent air release from the subfloor rising and

forming bubbles and pinholes on the surface. Extremely porous substrates may require two

priming/sealing coats. Primer coats must be allowed to dry before applying the self-levelling

material.

Pumping or Mixing by hand

1.  This is a specialized activity and the product must be applied by a recommended contractor

      who has been fully trained in the use of the product and equipment.

2.  In case of installation by hand, pour the mixing water into the clean mixing vessel. Add the

     whole bag of powder slowly to the water, mixing continuously with a heavy duty drill fitted

     with a suitable paddle. Mixing should continue for at least 3 - 5 minutes

3.  Whatever pumping or mixing by hand, make sure that a smooth creamy consistency is

     obtained.

4.  Do not mix more material than can be reasonably laid within the flow time of the material.

     However, ensure that subsequent mixes are ready to enable continuous pouring.

Pouring

1. Make sure there is no ponding of primer before pouring the material。

2. pump should be used for large area application.

3. Pour the mixed material on to the dry primed surface, spread with trowel and allow to

    self-smooth. Roll surface with the purpose made spiked roller. Best results are achieved

    when the pouring and leveling is a continuous process.

Cleaning

1. The material should be removed from tools and equipment with clean water immediately

    after use. Hardened material can only be removed mechanically.

Curing

Curing is not essential normally. But in case of high environmental temperature, direct sunlight

or windy weather plastic sheet should be used to cover the hardened surface for 2 days.

Estimation

Coating

In areas that are subjected to regular water immersion or chemical attack from acids or

organic solvent, it is recommended to protect the self-levelling material with an epoxy

floor coating. For more information please refer to the technical support of Polar Bear.

Limitation

Concrete substrate onto which the self-levelling material is to be applied must have a

surface temperature of at least5℃, with the air temperature of at least 10℃.

Avoid direct sunlight onto the applied floor or wind blowing over the floor surface during

application and the initial stage of curing.

When used as an overlayment，an appropriate sealer should be used to enhance the

wearing resistance as well as the colour shade.