POLYCOAT WB – 200L
Characteristics
- 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.
FIELDS OF APPLICATION : Polycoat WB is used for providing damproofing for below ground concrete structures which are above the water table. This can also be used as the protective coating for built-up roofing systems and other exposed surfaces. The coating is also used as a moisture vapor barrier on block works and concrete surfaces prior to cladding.
APPLICATION INSTRUCTIONS : The application temperature should be between 4°C to 45°C. Application procedures may vary slightly depending upon site conditions. The general recommended guidelines for the application of the bitumen coating is as follows:
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.
COVERAGE : Moisture vapor barrier coating: 4 m2/lt/coat will give dry film thickness of 125 microns.
Storage & Shelf : life The drums and pails must be stored in a covered area, away from direct sunlight, UV and other sources of heat. The shelf life is up to 12 months when stored as per recommendations. Excessive exposure to sunlight, UV and other sources of heat will result in considerable deterioration of the product and reduce its shelf life.
HEALTH & SAFETY : Protective clothing such as gloves and goggles should be worn when handling the product. Treat any splashes to the skin or eyes with fresh water immediately. Should any of the products be accidental swallowed, do not induce vomiting, but call for medical assistance immediately.
