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Premature Defect! Discolouration
Crystalline water (Alkaline in nature) from uncured cement oozing out through the surface onto the paint film will start to disintegrate the polymers in the paint film breaking the coating and thus becomes powdery and causes lifting or blistering. In more severe cases even the top coat becomes powdery. The seepage of Cement crystalline water from cracks will start to bleach and disintegrate the coating polymer. Causing the painted surface to discolour and in more severe case chalking will occur.
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Wrinkling
Paint film coated on to damp surfaces will take a longer time to through dry. If during the process of drying when the surface starts to form film during drying but the base is still wet and soft. A sudden shower of rain will cause the paint film to wrinkled, this is due to the different elasticity forces on the cured and uncured paint surface.
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Fungal Attack
Constant high moisture area is a good breading place for algae and fungi growth.
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Peeling
Chalky surfaces caused by alkali attacked or low quality paint, if not treated properly prior to painting will cause the paint film to peel upon any damages to the continuous paint film. The water seeping through the fresh paint film will push the finish film up thus causing it to blister and later as the blister grows bigger will start to peels and flakes. |
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Remove all loose, defective and unstable paint film or powdery residues by thorough brushing and scrapping. High pressure water jet is highly recommended. Treat areas affected by mould, lichens, algae and moss with Mesa Fungi Wash. Make good minor defects and cracks with suitable grade of Mesa Putty Filla. Make sure the surface is completely dry before painting.
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| General painting system for plaster surface is as follows: |
| 1.One coat of Mesa Primer or Sealer. |
| 2.Two coats of Mesa Top Coat Finishing. |
Colours & Effect