Troubleshooting Concrete Surfaces
Flaking from Concrete
Description
Paint flaking and delaminating from the concrete floor.
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Possible diagnosis
- Incorrect paint for traffic conditions or contact with chemicals like oil, petrol, detergents etc.
- The incorrect use of an interior epoxy in outdoor UV conditions.
- Poor concrete substrate integrity.
- Moisture ingress due to inadequate moisture barrier under floor.
- Painting before the floor has properly dried.
- Failure to remove surface contaminants such as dust, dirt, oil etc.
Remedy
- Pay attention to all of the above. Follow application instructions of NEO Floor Paint or NEO Epoxy Floor Paint.
Flaking from Pre-cast Concrete
Description
Paint flaking and delaminating from pre-cast concrete substrates.
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Possible diagnosis
- Mold release agents are sometimes applied to reduce shattering. These release agents can be oily in nature restricting paint adhesion.
- Failure to remove laitance (powdery weak alkaline layer) which can compromise coating adhesion.
- Dirt, dust and lose deposits on the substrate prior to painting.
- Poor quality paint with inferior adhesion properties.
Remedy
- Remove release agents by etching, sandblasting or by high-pressure power washing.