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| HDB outdoor |
| Location |
Hougang |
| Orientation |
East-West |
| Materials |
Ceramic Tiles |
| Surface Moisture |
Roof: 8.5%
Wall: 10%
Floor: 10% |
| Surface Temperature |
Roof: 28°C
Wall: 29.4°C
Floor: 28°C |
| Stain types |
Green, black and yellow patches |
| Stain size |
Almost all over the roof, wall and floor |
| Stain location |
Floor, gable, walls inside and outside, ceilings |
|
| Wind Speed |
0.5% |
| Wind Direction |
East-West |
| Ambient Temperature |
29.8°C |
| RH |
68.6% |
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- Excessive rainwater as a result of improper drainage and gutter system causes high relative humidity and surface moisture
- The wind blow direct to building and building location is too close to plantation, therefore moulds spore from dead plants, dust, leaves attaches to building surface
- Less maintenance of Multipurpose Hall after and before usage
- High contents of atmosphere gas acids (SO2, CO and NO2 )
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- Clean up the contamination area with hydrogen peroxide-based cleaner such as HG mould spray
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