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How to operate and use building services in order to prevent the spread of the coronavirus disease (Covid-19) virus (SARS-CoV-2) in workplaces.

The following information is meant as an addition to the general guidance of employers and building owners that is presented in the WHO document “getting workplaces ready for COVID-19

The above animation explains how droplets transferred into airborne particles may increase the spread of Covid-19 related diseases in our daily environment.

Transmission Routes: (Rehva Covid-19 guidance document, 3 April 2020)

Close contact transmission through large droplets (> 10 microns) , which are released and fall to surfaces not further than about 1 – 2 m from the infected person. Droplets are formed from coughing and sneezing. Most of these large droplets fall on nearby surfaces and objects, such as desks and tables. People could catch the infection by touching those contaminated surfaces or objects, and then touching their eyes, nose or mouth. If people are standing within 1 -2 m of an infected person, they can catch it directly by breathing in droplets sneezed or coughed out or exhaled by them.

Airborne transmission through small particles (< 5 microns), which may stay airborne for hours and can be transported long distances. These are also generated by coughing, sneezing and talking. Small particles (droplet nuclei or residue) form from droplets which evaporate and desiccate. The coronavirus particle remains active for many hours or even days. Increased ventilation is useful and will remove more particles helping the contamination effect of the coronavirus.

Getting your Workplace ready for COVID-19


COVID-19 Ventilation Compliance in the Workplace
COVID-19 Ventilation Compliance in Schools

According to the World Health Organisation evidence shows that poorly ventilated buildings have a higher risk of infectious disease transitions. The South African government has stipulated that good ventilation in the workplace is an essential COVID-19 protection measure.

Windmaster International has over 25 years experience in turbine and ventilation products for industrial and home use. It is important to us that you know the key points to consider when getting your workplace ventilation ready for COVID-19, whether it be in factories, schools, offices, healthcare or your home.


Crowded work areas with poor air ventilation increases the risk of virus transmission and it’s essential that a constant flow of fresh air is maintained to combat and control the infection rate of viruses in factories.

Health Care

Health care facility ventilation design greatly affects disease transmission and it’s essential for health care facilities to ensure 24/7 air supply and ventilation to combat transmissions of microorganisms, such as those causing COVID-19.


In the business world interaction between colleagues is common practice. Board rooms, cafeterias and offices need to have good ventilation, ensuring each person is supplied with adequate fresh air and creating a healthier work environment.


It is important for teachers and our children to be safe and healthy at school. Adequate ventilation in classrooms is extremely necessary to combat the spread of viruses and reduce the chance of COVID-19 infections.

Your Home

Make your house a healthy home by ensuring your family has the adequate supply of fresh air when they are inside your home.

Tornado roof ventilators ensures continues airflow of fresh air resulting in a heathier and safer environment. Natural ventilation with Tornado roof ventilators will ensure safe working conditions and combat virus infection.



REHVA COVID-19 Guidance Document.pdf

General Ventilation in the Workplace

General Ventilation in the Workplace

WHO - Natural Ventilation for Infection Control

WHO - Natural Ventilation for Infection Control

WHO - Getting your Workplace Ready for COVID

WHO - Getting your Workplace Ready for COVID-19