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Wales Online
Wales Online
Emma Gill & Will Hayward

The reasons your house is growing mould and how you can stop it coming back

The cost of living crisis and the skyrocketing bills many people heating their house as little as possible.

Though this may be easier on the bank balance it is causing a lot people's houses to become damper. this is especially an issue as people are not using tumble dryers to dry clothing. Unfortunate, where there is damp, there is often mould.

The recent death of a child from breathing in mould shows how bad the issue can be so the MEN spoke to damp expert Richard Brown to find out his advice for getting rid of the dreaded mould.

Read more: The best snow pictures from around Wales as as large parts of the nation are carpeted

Mr Brown works with RBBA Ltd Building Surveyors said: "What is meant by that is something is occurring that is allowing the germination of the mould and it is that something that must be rectified, not the mould itself. If you just treat the mould, it will continue to return, as you have not got to the bottom of the root cause.

"Mould spores are present on all surfaces, and largely, these spores lie there, dormant, waiting for the elixir of life, water, to spring into life. So it is dealing with the water that offers the success in treating mould. Stop the water, stop the mould."

"The daddy of all damp causes" is condensation and the wet surfaces it creates "germinates these mould spores that are always present"

He added: ""You are always going to have a certain amount of condensation on your windows in the morning, about an inch around the bottom is normal. The entire window being covered is not normal. I would suggest, if there's that much water on the window, there is a problem not with ventilation but extraction."

Richard's has listed his best tips stopping mould growth

  • Make sure you extract as much of the moisture you create as quickly as possible. This means using your extractor fans in the kitchen and bathroom. But make sure your fan is actually working. Just because it is making a noise, doesn’t mean it is working. Hold a piece of toilet tissue against the grill and see if it holds the tissue. If it doesn’t, its just a “noise maker."
  • Keep your property warm. Heated air can hold more moisture than cool air. The warmer the air is, the more moisture it can hold. Try and keep your air temperature at a low background heat of 18°C+.
  • Don’t use the boost button on your boiler. Using the boost for an hour is very inefficient and expensive, plus one hour is not enough time to substantially heat the air. Keeping the air temperature consistent is a lot cheaper and more comfortable, plus as mentioned earlier, warm air holds more moisture.
  • Use trickle vents at the top of the windows, and NOT wide open windows. We are constantly told to ventilate our houses, but this doesn’t mean unregulated ventilation. Most radiators are sited below windows and we know warm air can hold more moisture than cold. So how do we get the best of both worlds. We open that little slit at the top of the window. This allows a certain amount of air into the property, whilst allowing the radiator to heat the air up.
  • When showering, close the bathroom door, dry yourself in the bathroom, exit, close the door and let your extractor fans run for another 10 mins after you leave. Most extractor fans are connected to the light fitting and have a setting that allows it to run after the light is knocked off anyway.
  • With our weather, it is not always possible to dry our clothes outside and using a tumble dryer is extremely expensive. So if you must, dry them in a room with an extractor fan and keep the fan running. Remember to keep the door closed and turn the heat on to a low constant setting of 18°C.
  • Try drying your clothes at the warmest time of the day, when the natural air temperature is warmer than in the evening.
  • When cooking, use the extractor fan and keep a lid on the boiling pots. This will lower the amount of moisture going into the atmosphere.
  • When running a bath, run a little cold water first, just enough to line the bottom of the bath and then run the hot water. This will stop steam.
  • Boil your kettle under the extractor fan that is running.

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