Key Facts

Polycoat WB

Bitumen emulsion paint

Properties

  • Resists the attack of salts like chlorides and sulphates that are present in the soil.
  • Easy to apply
  • Cold applied
  • Adheres to concrete, metal, wood, cork, etc.
  • Asbestos free, odorless and can be applied in closed or confined spaces
  • Water-based and therefore is non-toxic
  • Non- flammable
  • Versatile
  • Economical
  • Conforms to ASTM D 1227, Type III, Class 1

Description

Polycoat WB is an emulsified thixotropic bitumen protective coating. The coating dries to form a black flexible protective film. The finished film forms a tough barrier to vapor transmission.

This TDS is applicable for the United Arab Emirates only. Please contact your local Polybit sales office for the available TDS in your region

Step by Step

Surface preparation 

The surface shall be cleaned thoroughly of all contaminants like dust, traces of curing compound, oil and grease. All surface imperfections and protrusions are to be removed and repaired. Structurally unsound and friable concrete must be removed and repaired with a suitable Polycrete* concrete repair mortar. 

Priming

Primer is always recommended prior to coating as it not only penetrates into the concrete pores and seals the substrate. It also acts as an adhesion promoter for further coatings. The primer coat can be made in the site by diluting the same bitumen emulsion with 20% water. The primer may be applied by a brush, roller or airless spray. Allow the primer to dry before any further coats are applied. However, if the primer after application is left open for more than 24 hours after it becomes dry, clean the surface of any settled dust and apply a fresh coat of the primer.

 

Application

Stir the contents of the drum thoroughly prior to application to remove any sediment. The application can be done with a roller, brush or airless spray. Apply the coating at a coverage rate of 1-4 m2/L./coat, depending on the dry film thickness required. When applied at 4m2/L./coat, the dry film thickness achieved will be 125 microns. Further coats shall be applied only after the previous coat dries off completely. However, the coverage depends on the smoothness and porosity of the substrate and the required thickness of the coating.

Protection

The coating shall be protected from ongoing site activities and during backfilling from getting damaged by a 150 micron polyethylene sheet.