Excess water in the air of a building is a significant problem

Mould and condensation risks are most significant in ground-floor buildings. The highest amount of condensation and mould growth occurs in flats, bungalows, and basements. The surrounding landscape and weather will affect it.

Buffering

Buffering excess damp air in a single-storey property is lower. Bungalows and ground-floor flats are prone to atmospheric water intrusion. Two-storey buildings are at a lower risk due to their air volume.

Using wall and floor surfaces to buffer water vapour may be difficult, as the occupier will want to apply decorative finishes to them.

Heating the building

Heating and water-whicking materials will buffer excess water vapour from the air; combined with ventilation, this will prevent the Dew point from being reached and water droplets from forming.

Relative Humidity

In a building, the sum of the external RH and the moisture generated in the building is. Earth’s tilt controls the external environment.

External climate

For 8 months of the year, the average external RH is 83%. For the other months, the average is 78%. Inside, we are looking for an average RH of 60% at 17 °C. To achieve this, we need to heat the incoming air and ventilate the building in a balanced manner.

To have a healthy environment in your home, you must

• Control water vapour at the point of production
• Balanced heating of the building and ventilation to reduce the damp air.
• Insulate to shift the dew point, giving the building more time to balance and reducing your energy costs.
• Maintain the building in good condition to prevent external water ingress and any internal water escapes.

Some reading on condensation https://en.wikipedia.org/wiki/Condensation