Case 2
Building | Flatted factories at Bedok Industrial Park |
Location | Ceiling board in office (4th Storey) |
Ventilation Mode | Cooling by air-conditioning |
Sampling Method | Tape sampling, Culturing |
No. of Tape Samples | 1 |
No. of Cultured Sample (from tape) | 4 |
Medium Used | Potato Dextrose Agar (PDA) |
Temperature (°C): 26.3
Relative Humidity (RH): 58.5
Wind Speed (m/s): 0.13
Building
The location of concern is an office situated within a block of flatted factories in Bedok. Fungal growth has been reportedly dwelling in this air-conditioned publishing office for the past three years. Time was hence ample for mould to develop and possibly affect indoor air quality, given the lacking awareness of the tenants to inherent mould problems.
Observation
Preliminary observations show the mould growing in a patterned, lined manner, possibly indicating similar pattern in the moisture source. Closer observations show that insulation of chilled water pipes in the ceiling plenum has deteriorated, causing condensed droplets of water falling onto the ceiling boards .