Surface relative humidity
The relative humidity of the air right at a surface. Because a cooler surface raises local RH for the same moisture, mould grows wherever surface RH exceeds ~80% — the cold spots, not the room as a whole.
The relative humidity of the air right at a surface. Because a cooler surface raises local RH for the same moisture, mould grows wherever surface RH exceeds ~80% — the cold spots, not the room as a whole.