Ventilation

Mould and mildew lead to musty odours, allergies, smelly basements, ruined textiles, damaged artifacts and reading material. These signs all indicate to a lack of ventilation.

Ventilation is the process of supplying and removing air by natural or mechanical means to and from any space. Ventilation creates a positive flow of air that allows the dwelling to "breathe" which helps prevent moisture build-up all year round. The air inside a room should be circulated with the air outside. When people or animals are present, ventilation is especially necessary to remove carbon dioxide and renew the oxygen used. It also aides in the removal of stale odours caused by smoking, painting and cooking, etc. A lack of ventilation can lead to many health problems especially those who suffer from allergies, asthma, sinusitis, and breathing disorders.

Generally in the Winter months there is a significant rise in ventilation problems. These problems are caused by the use of constant heating devices where the windows are kept closed to keep the cold air out. Of course we are going to keep our windows closed in winter.
But when condensation occurs and their is a lack of air circulation, it creates the perfect growth conditions for mould and mildew.

Signs of mould and mildew will be found on many items such as windows, leather items, furniture, articles of clothing and bedding, reading materials, bathrooms and artifacts. Within a couple of colder months, some of these items will be destroyed with the attack of such fungus.

 

Why install a ventilation system

The only way to increase the natural air flow under and within a dwelling, is to install vents under the sub-floor, at high ceiling levels, in pantry/kitchen cupboards and built-in wardrobes. Vents create a good cross flow of natural air, removing and preventing a build up of stale damp air, which mould and mildew thrive on. Ventilation creates a much healthier living environment especially for those who suffer from breathing difficulties,asthma and allergies.

Sub-Floor vents A natural ventilation system which increases that natural Read more...
Mechanical VentsImprove sub-floor air quality and reduce humidity level Read more...
Louvre VentsAn external louvre vent when paired with a plaster internal Read more...

 

What causes mould and mildew


1. Air Circulation
Along with humidity and temperature control, adequate air circulation will help prevent mould growth. Air circulation helps control moisture levels through evaporation.
2. Temperature
Most moulds thrive in warmer temperatures. Temperatures below freezing will not kill mould, but will inhibit their growth.
3. Humidity
Generally, it is recommended that relative humidity remain at 50% with a max. change of plus or minus 5% per month.
4. Light
Sunlight, and in particular UV radiation, generally retards mould growth. Sunlight and ultra-violet radiation, however, cause serious fading of library materials and can speed up chemical reactions leading to the formation of acids in paper therefore is not recommended.
5. Chemical composition
Mould growth can also be affected by the chemical composition of the book or paper food source. Many fungi prefer slightly acidic material.

More on ventilation

 

Did you Know?

One of the most common causes of asthma, sinusitis and allergies is bacteria growth from fungi, mould and mildew.

Did you Know?
Studies have shown that the average human being breathes in an incredibly high amount of toxins from the environment. In fact, with each breath, we take in more toxic substances and less of the vital oxygen that we need, than ever before.

Mouldy walls.

mould and mildew growth resulting from a lack of ventilation
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