Bringing a breath of fresh air to the design of indoor environments
Contents |
[edit] Introduction
In London, it would be unusual to complete a journey without encountering some form of action against outdoor air pollution thanks in part to the mayor’s focus on the issue. Now common sites include bus stops that relay data on the local air quality, hybrid buses patrolling the streets, green walls sprouting along the edge of office blocks and citizens using apps to navigate the least polluted route to their destination. Numerous, positive actions are currently occurring across the city that are working together to create a healthier, outdoor urban environment.
When it comes to our indoor environments, it is important that action against poor air quality is not left behind. The current buzz surrounding issues of occupants’ wellbeing in the built environment signals an increasing awareness and understanding of the potential harm indoor environments could be having on our health and wellness.
Within this category falls the matter of indoor air quality and its associated effects on human health. It is imperative that we understand the relationship between indoor air pollution and health, and how the built environment can have a positive impact.
[edit] Sources of indoor air pollution
It is well established that occupants’ health and wellbeing can be severely impacted by poor indoor air quality. Impacts include headaches, fatigue, and dizziness, and can sometimes lead to chronic respiratory problems, allergies, and low levels of productivity.
Although caused by a range of contaminants, those that are most significant in designing and constructing buildings include the presence and concentration of Volatile Organic Compounds (VOCs) and formaldehyde, resulting from the off-gassing of building materials and other products including finishes and adhesives.
[edit] ‘Build tight, ventilate right’
So how can we begin to tackle these pollutants, especially at a time when the need to conserve energy has led to increasingly air-tight buildings? Air leakage through the building fabric, while leading to heat loss and increased energy consumption, did at least provide a passive source of air exchange inside buildings.
Reductions in the air permeability of buildings now means that passive methods or mechanical ventilation with heat recovery (MVHR) are required to achieve adequate ventilation rates to ensure the sufficient supply of oxygen and removal of internally generated pollutants. When choosing which method to pursue, it is important to take the quality of the outdoor air into account.
Areas of good outdoor air quality are well suited to methods of passive ventilation. Areas where the quality of outdoor air is low require MVHR systems to achieve good indoor air quality. For MVHR to be most effective the intake of air should be placed away from sources of outdoor air pollution and filters should be well maintained.
Yet, this cannot achieve good indoor air quality alone. Although ventilation is an effective mechanism for mitigating exposure to indoor pollutants, efforts need to be made in tackling pollutants at the source.
[edit] Taking control at the source
The increasing awareness of indoor air quality is creating a demand in the market for healthy building materials and as a result, the market is responding. VOC-free paints and finishes, green certified furnishings and other fit-out components are available and are advocated by sustainability standards including BREEAM and WELL. Certain indoor plants such as spider plants and English ivy are advocated by NASA for having air filtering capabilities.
The importance of good indoor air quality is put into perspective when we learn that on average UK citizens are spending 92% of their time in an indoor environment. In light of the efforts taken to address outdoor air quality, if a commensurate approach to raising awareness and taking action to improve indoor air quality were to be applied, the improvement to our health, productivity and general level of wellbeing could be significant.
Indoor air quality is, of course, only one element of creating great places to live and work. Natural lighting, use of natural materials such as stone and timber, provision of a wide range of public and private spaces with unique characters, careful placement of art installation and integration of areas for formal or informal sport and other social activities are all part of the mix. Successful integration of all of these elements can lead to award-winning places that people love to be in, as demonstrated by the recent BCO Best of the Best Award made to the Sky Central Building.
[edit] Related articles on Designing Buildings Wiki
- Air filtration and clean Indoor air quality standards.
- Air quality.
- Air Quality Taskforce.
- Air tightness in buildings.
- Airtightness of energy efficient buildings.
- At a glance - Indoor air quality.
- BREEAM Indoor air quality plan.
- BREEAM Indoor air quality Ventilation.
- BREEAM Indoor pollutants VOCs.
- BSRIA responds to UK Air Pollution Report.
- Clean indoor air for healthy living - New air filter standards.
- Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).
- Ensuring good indoor air quality in buildings.
- Fresh air.
- Health effects of indoor air quality on children and young people.
- Indoor air quality.
- Indoor environmental quality.
- Locating ventilation inlets to reduce ingress of external pollutants into buildings: A new methodology IP 9 14.
- Sick building syndrome.
- TG10 2016 At a glance, wellbeing.
- Ventilation.
Featured articles and news
Design and construction industry podcasts
Professional development, practice, the pandemic, platforms and podcasts. Have we missed anything?
C20 Society; Buildings at Risk List 2025
10 more buildings published with updates on the past decade of buildings featured.
Boiler Upgrade Scheme and certifications consultation
Summary of government consultation, closing 11 June 2025.
Deputy editor of AT, Tim Fraser, discusses the newly formed society with its current chair, Chris Halligan MCIAT.
Barratt Lo-E passivhaus standard homes planned enmasse
With an initial 728 Lo-E homes across two sites and many more planned for the future.
Government urged to uphold Warm Homes commitment
ECA and industry bodies write to Government concerning its 13.2 billion Warm Homes manifesto commitment.
From project managers to rising stars, sustainability pioneers and more.
Places of Worship in Britain and Ireland, 1929-1990. Book review.
The emancipation of women in art.
Call for independent National Grenfell oversight mechanism
MHCLG share findings of Building Safety Inquiry in letter to Secretary of State and Minister for Building Safety.
The Architectural Technology Awards
AT Awards now open for this the sixth decade of CIAT.
50th Golden anniversary ECA Edmundson awards
Deadline for submissions Friday 30 May 2025.
The benefits of precast, off-site foundation systems
Top ten benefits of this notable innovation.
Encouraging individuals to take action saving water at home, work, and in their communities.
Takes a community to support mental health and wellbeing
The why of becoming a Mental Health Instructor explained.
Mental health awareness week 13-18 May
The theme is communities, they can provide a sense of belonging, safety, support in hard times, and a sense purpose.
Mental health support on the rise but workers still struggling
CIOB Understanding Mental Health in the Built Environment 2025 shows.
Design and construction material libraries
Material, sample, product or detail libraries a key component of any architectural design practice.