The places we live in greatly affect our health. With the average person spending around 90% of their time indoors, it’s important to make sure our environments promote our wellbeing. Poorly ventilated spaces, for example, can lead to a range of health issues, from respiratory illnesses to fatal conditions. This brings us to the key focus of any architectural design: ventilation.
One of the most tragic reminders of the importance of healthy indoor environments is the case of two-year-old Awaab Ishak, who died in 2020 due to mould exposure in his Rochdale home. The coroner ruled that poor ventilation in the one-bedroom flat played a major role in the growth of the mould that ultimately caused his death. Following this, Awaab’s Law was introduced, requiring landlords to address health hazards in social housing within a legal timeframe. Although the law currently applies to social housing, plans are underway to extend it to the private sector.
As Architectural Technologists, we have a responsibility to ensure that the spaces we design not only meet regulatory requirements but also provide healthy living.
The role of ventilation in a healthy home
When designing new spaces, one of our key considerations is ensuring that adequate ventilation is provided. Building regulations require the incorporation of both background and purge ventilation. This is usually achieved through simple measures like trickle vents in windows or double lockable latches that allow for controlled airflow. However, proper ventilation goes beyond design- it’s about educating occupants on how to use these features effectively.
During warmer months, we naturally throw open our windows, allowing fresh air to flow in. However, in colder months, many of us shut our homes up tight, aiming to conserve heat. In doing so, we create overly air-tight environments that can foster the growth of mould. Without adequate ventilation, the air in these spaces becomes more toxic, leading to a range of health issues.
A technological solution
An exciting innovation discussed among members of the Chartered Institute of Architectural Technologists (CIAT) is the use of humidity sensors in homes. Their sensors can alert residents when humidity levels become too high, prompting them to ventilate the space-whether by opening a window or enabling a mechanical ventilation system. In an age where we’re increasingly reliant on data, these systems could easily be linked to smartphones, giving occupants greater control over their indoor environment.
The discussion can be read in full HERE.
Alertive technology isn’t a cure-all. In rented accommodations, for instance, tenants may not always use the ventilation systems when prompted, or security concerns might limit how often windows can be opened. In these cases, mechanical ventilation and heat recovery systems (MHVRS) could be the answer. These systems not only provide fresh air but also help recover heat, making them an energy-efficient option.
For more information on MVHR systems and how they work, check out this helpful GUIDE.
What about empty homes?
In places like Guernsey, where many homes are used as “lock-up-and-leaves,” maintaining a clean and safe indoor environment can be tricky. These properties are often tightly sealed when not in use, creating a potentially unhealthy environment. Mechanical ventilation systems could be useful here, but again, these need to be properly designed for specific characteristics of the home.
It’s important to note that MVHR systems might not be ideal for all homes, particularly older properties that aren’t air-tight. In these cases, achieving a balance between ventilation, heating and insulation is crucial to prevent mould growth and ensure healthy indoor conditions.
For more on combating mould, have a look at this ARTICLE.
In summary
Ventilation is key to maintaining a healthy indoor environment. This could be through measures like windows and vents or more advanced systems, ensuring that our homes have good air quality is crucial. While we often focus on conserving energy and making buildings air-tight, it’s important to remember that ventilation plays an equally vital role in our health.
As Architectural Technologists, we have a responsibility to create spaces that not only meet the building regulations but also enhance the wellbeing of the people who live and work in them.