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What Is Mould?

Mould problems are more commonplace that you think with around 1 in 5 British homes suffering from issues with condensation or black mould. Just like embarrassing bodies, mould is an embarrassment that no homeowner wants to shout about.

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Removing mould can be problematic, yes you can paint over it but unless you remove the root cause it will only come back to haunt you time and time again. So what exactly is mould?

Mould is a microscopic organism that requires the following to grow:

  • Any organic material (for example, wood or paper)
  • Oxygen
  • Moisture

Mould can spring up virtually everywhere and is a severe health risk, especially if left. Mould growth is very problematic and can cause serious health problems. 


There are different types of mould;

  • Green Mould
  • White Mould
  • Blue Mould
  • Black Mould 
  • Toxic Black Mould

Toxic black mould is the most dangerous and should be left to a professional to remove. Additionally, certain types of damp can be addressed by improving poorly ventilated rooms however you must proceed with caution.

Rising damp only happens at ground floor levels as the moisture drawn up the wall comes from the soil in the ground. It is often confused with damp caused by condensation. Many often mistake rising damp and seek out the wrong treatment which can be costly but of course ineffective. As this type of damp is easy to misdiagnose, it is advisable to get expert advice.


Mould usually destroys whatever it grows on as it gradually digests it. Mould also releases tiny spores that can travel through the air; these spores often have mycotoxins and allergens attached to them. It is the mycotoxins and allergens that can affect our health and cause allergic reactions.

Mould spores can be incredibly dangerous to those with already weakened or low immune systems, elderly people, babies and young children and asthma sufferers. Damp, mould and mildew have also been linked to actually causing asthma and breathing problems in children. 


Excess moisture plays an important role in the amount of mould in your home and the mould itself can have a major effect on both the indoors and outdoors of your property. If you find mould is growing in your home you should act fast, if left untreated mould can grow into your walls and even affect building materials. 

If you find mould in your home, you can tackle removing the mould however you must be sure it isn't toxic black mould. You must be very careful when dealing with mould as it is possible to have an allergic reaction. 

To remove mould off a wall;

  • Make a solution of chlorine bleach and water – usually 1 part bleach to 3 parts water – or get hold of a household detergent like Domestos bleach spray with bleach as an active ingredient.
  • Using a stiff-bristled brush, scrub the blackened area.
  • Rinse thoroughly and dry.If you then couple one of these causes with poor ventilation, then any damp walls will struggle to dry out, even if the original source of water has been repaired. This is when wall mould problems can develop.

Of course this doesn't attack the source of the mould and you need to investigate why you had a mould problem in the first place, otherwise it will just come back.

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Are You Suffering From Mould?

EnviroVent can provide you with a permanent solution to solve all your mould woes through our innovative range of ventilation solutions.

With over twenty five years of successful mould busting across the UK, EnviroVent’s energy efficient ventilation products provide an all year round healthy indoor environment free from condensation and mould.

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