How To Reduce Mould and Mildew Long-Term

mould removal

Mould and mildew are dangerous to breathe in, affecting those who suffer from respiratory problems significantly more and cause these problems to those who are of good health.

It has been classified as a ‘Category 1 Risk’ according to ‘Housing Health & Safety Rating System’, therefore, it is important to not just get rid of it in the short-term, but to practice ways to reduce mould and mildew from returning in the long run.

Removing the mould and mildew when it appears, although is beneficial for your health, it does not reduce the chance of it growing back, so by investigating the reason of the cause, can help prevent the issue from reoccurring.

To do this you must know what mould and mildew is and what causes it.

What is Mould and Mildew?

It is a fungus that is usually a symptom from dampness and excessive moisture. Mould is black or blue in colour and can be green or brown depending on the type of mould, while mildew can be white, grey and yellow.

Homes and properties are a perfect place for its growth and to feed on surfaces due to the darkness and moisture inside, as well as both cold and warm indoor temperatures.

When wet mould is allowed to dry it turns into a powdered consistency which can float and be inhaled by anyone within the property.

Signs of mould and mildew can be visible on walls, window sills and ceilings but may not always be obvious, hidden in corners, behind furniture, beneath floorboards and a musty smell.

Mould can be divided into 4 categories of severity and the worse the mould is, the more likely professional help is needed. A breakdown of the 4 categories can be found here.

What Causes Mould and Mildew?

Poor ventilation and humidity can create excessive moisture in your property.

Bad weather and the location of your property, (e.g. by the sea) can increase the humidity of your property, therefore, creating damp.

Damp can be also be created through leaked pipes or gaps in your property.

Condensation is also a common cause; which can primarily be found on windows, windowsills and bathrooms. However, it is also worth noting that the way a property is treated is a common cause for mould and mildew growth.

Long-Term Solutions

Improve Ventilation

Ventilation and damp do not mix. Mould typically grows when air is still. By providing your property with increased ventilation, it will decrease the damp allowed inside your house, preventing it from returning.

To increase ventilation:

  • Open windows
  • Buy/turn on extractor fans (cheap to run)
  • Trickle vents
  • Leave gaps between furniture and surfaces
  • Ventilate cupboards and wardrobes (opening and not overcrowding them)
  • Vent tumble dryers outside

Reducing Moisture and Damp

This can be reduced through even the smallest of changes.

To reduce moisture and damp:

  • Closing doors of rooms that produce moisture when in use (kitchen, bathroom)
  • Cover cooking pans
  • Drying condensation asap
  • Dehumidifiers
  • Dry clothes outside or in a ventilated room (e.g. a bathroom, not on a radiator)
  • Avoid using gas or paraffin heaters

Heat and Insulate

This can especially be applied in the cold and wet winter months as it will reduce condensation and humidity that lingers. Do still remember to ventilate your home regularly.

To heat and insulate your property:

  • Double glazing
  • Do not cover or block radiators
  • Heat up your home
  • Set low radiator temperatures for longer periods of time
  • Let natural light enter


By cleaning your home, including dusting, wiping surfaces and hoovering, it will get rid of mould and mildews favourite spots.

There are many sprays and paints on the market that are anti-mould, however, when mould and mildew is excessive or that you are unable to control, it is best to call for professional help.

At CPL t/a Rainbow International we are experts in dealing with all sorts of levels of mould and damp issues. To find out how we can help, give us a call freephone on 0808 196 0363.