Common Mould and How to Kill It With Light

Mould is a naturally occurring organism which plays a major role in the earth's ecosystem. Unfortunately, more often than not, it creeps up to our homes and can cause serious implication to our well being.

 

Mould at home is dangerous and common organisms include various species of Aspergillus, Penicillium, Cladosporium, and Alternaria, among others. These moulds can be found in indoor and outdoor environments and can pose health risks, especially for individuals with allergies or respiratory conditions.

 

Ultraviolet-C (UVC) light is known for its ability to kill or inactivate microorganisms, including moulds. However, the effectiveness of UVC light depends on factors such as the intensity of the light, exposure time, and the specific mould species. It is known that lower UVC bands can destroy the DNA when exposed to UV radiation with a wavelength of 240nm to 290nm.

 

Here are some general steps for using UVC light to help control mould:

 

Before attempting any remediation, it's important to identify the type of mould present. This can be done through professional mould testing services.

 

Invest in UVC equipment designed for mould remediation. This may include portable UVC devices or fixtures installed in HVAC systems.

 

UVC light can be harmful to skin and eyes. Ensure that you follow safety guidelines and use protective gear, such as gloves and goggles, when working with UVC devices.

 

Direct UVC light exposure is crucial for effective mould control. Ensure that the light reaches the surfaces where mould is present. Keep in mind that UVC light has limited penetration, so it may not be effective for deep-seated mould. UVC light is only effective in killing mold spores and preventing them from reproducing when under direct exposure to the affected surfaces is. The light needs to reach the mold-infested areas for it to have an impact.

 

The effectiveness of UVC light depends on exposure time. Consult the manufacturer's guidelines for the specific equipment you are using to determine the appropriate duration of exposure.

 

UVC light can be used as part of an integrated approach to mould remediation. It is often more effective when combined with other methods such as cleaning, moisture control, and proper ventilation.

 

Regular monitoring is essential to ensure that mould does not return. If necessary, repeat the UVC treatment and address any underlying issues contributing to mould growth.

It's important to note that while UVC light can help control mould in certain situations, it may not eliminate all types of moulds or their spores. Professional assessment and remediation may be necessary for severe or persistent mould problems. Additionally, addressing the root cause of moisture, such as leaks or high humidity, is crucial for preventing mould growth in the long term.