Designing Indoor Spaces for Wellness

In this global pandemic, it is becoming clearer, more than ever, that our well-being is directly linked to our spaces we inhabit, given self-isolation and quarantining practices happening globally. Several attributes of indoor spaces are becoming more and more relevant and obvious to those staying at home during this time.

Aesthetics and Interior Design

Linking interior design and well-being is not novel, though designing for cognitive health is becoming more prevalent nowadays. In example, feng shui, a Chinese practice, is founded on the premise of arranging spaces and furniture, to allow energy to flow through your life and spaces, and has been in practice for thousands of years. There is an existing wealth of knowledge existing on feng shui practices, inspiring homeowners to design their spaces in accordance to its principles.

An example of using blue to add a calming effect to a space, by Alexander Gorlin via Architectural Digest

The pandemic has lent itself to milder changes, in comparison to buying new furniture. Small changes to colour schemes have become popular, as homeowners embrace common views of the impact of colours on people; for example, blue is commonly seen as calming, possibly even lowering blood pressure. Similarly, homeowners have embraced the introduction of plants to their spaces, for practical and aesthetic reasons; beyond aesthetics, current worries have led some to embrace growing their own food over the upcoming months, but also health benefits, such as suspected immune system boosts, have inspired some to adopt flora and fauna into their home. The LEED rating system recognizes the importance of the link between health and visual aesthetics, with credits offered for meeting certain requirements regarding views of skies and nature.

Air Quality

In May 2018, the United Nations reported that by 2050, 68% of the world population will be living in cities, and as of that report, 55% of people were living in cities. Cities are renowned for innovation, but also for air quality issues. The Canadian Broadcasting Company, in late 2019, reported that air pollution levels near major roadways in Canadian cities, are too high for the public, based on a University of Toronto study. While indoor air remains ambiguous in whether it is worse or better than outdoor air, city dwellers are more than ever exposed toward various pollutants that can enter homes, some from cooking certain foods. Thus, air filtration systems are becoming more and more important to overall health, with seven million people dying from breathing polluted air annually. Current sustainability practices, like LEED and WELL, have added indoor air quality requirements toward the design of buildings, judging improved air quality as a critical factor in overall human comfort.

Acoustical Privacy

With more people working than home than usual, auditory comfort has become more and more critical. This is not novel, as the WELL rating system judges the quality of sound insulation and background noise level. While creaky floors and squeaky doors are often noticeable, there many noises that we have accustomed to: fridges, for example, have the same decibel level as rain. Noticeable sounds are often tied with design roots, like thin drywall allowing for sound to travel far. 

Lighting

Those working from home can attest to the need for appropriate lighting for proper working conditions, to avoid negative health conditions, like eye strain and headaches, and this need for proper lighting becomes more relevant in winter, when seasonal affective disorder comes into play. Improper lighting affects our circadian rhythm, which in turn, controls health aspects like our immune system and sleeping schedules, among others; a disrupted sleeping schedule leads to further health problems, such as negative effects on brain function and body fat levels. Similarly, blue light from numerous electronic devices can also disrupt circadian rhythms. Understanding the importance of lighting, the WELL rating system requires designers to provide light exposure that allows for circadian health to be maintained.

Paving the Way for Healthy Design

The above properties are often taken for granted, until negative conditions are made noticeable by demand, such as trying to sleep by a highway. Older buildings are not necessarily adhering to these principles; simply, in example, old creaky floors are common, thus lowering the auditory comfort of a building. Trends in global building practices are acknowledging these important attributes of indoor space, such as the LEED and WELL systems. As we navigate the current shift to work-from-home arrangements, these factors will become increasingly important with respect to economical considerations for new homeowners, workplace efficiency and most importantly, human health.

Examples of design strategies to increase lighting in workplaces, also touching on energy loads from lighting

Building a Sustainable Future: Discussing Materials

In major cities, like Toronto, thousands of buildings line the street, each built with tonnes of material, and with a total of 157 skyscrapers proposed, built or in progress, Toronto is on track to be only behind New York in number of skyscrapers, across North American cities. It is easy to focus on the sounds of construction when it wakes you up in the morning, but more thought-provoking discourse arises when discussing building materials, brought to light through life cycle analysis.

Building a Building

Of many important factors in building materials, seven logistical ones stand out: aesthetic, structural, thermal control, moisture control, air leakage control, cost and safety. An obvious critical factor is cost. While cost between materials can be small in magnitude, extending costs to skyscrapers can make a dollar per square footage an incredible and determining factor.

Aesthetics are not only important to the average consumer for pride in their home, but can also be extended to real estate and investment strategy. The material selection follows the aesthetic design principles in architecture, such as texture, symmetry, contract and colour balance. In addition to appearance, though important for buyers and sellers, material needs to be strong and durable to ensure safety, as well as easy to fabricate.

Structural and logistical aspects are critical, and can be conflicting. Another selection criteria is heat insulation, which conflicts with structural capacity, as the need for low density (as to maintain low thermal conductivity) reduces the structural capacity of most insulation, such as concrete. Similarly, air and moisture control measures are critical in choosing materials; the introduction of moisture and air can lead to mold and material degradation, while holes that allow for air leakage may lead to increased heating and cooling costs and pollutants, an important aspect in downtown Toronto. Beyond this, decreased heating and cooling demands also lowers the amount of greenhouse gases needed and produced.

Above all, the health and safety of inhabitants is of the utmost importance. Ageing buildings, with asbestos and other harmful chemicals, have brought to the forefront the importance of designing for safety and the future in choosing building materials, and in designing building materials.

Making Choices: Sustainability-driven Design

In recent years, a focus on sustainability has risen in building circles. With building materials’ contributions comprising 11% of global emissions of greenhouse gases, any shift can make a difference in climate change. Various companies have gotten creative, like CarbonCure Technologies, a Canadian company that uses industrially produced carbon dioxide in their concrete mixture, which then mineralizes, thereby reducing carbon dioxide emissions. The University of Toronto has announced plans to build a timber building, therefore avoiding materials that require creating a large amount of carbon emissions in production.

Mock-up photo of planned timber building sent to the City of Toronto

It is this shift in focus toward sustainability that has drawn attention to life cycle assessments (LCA) in various sustainability accreditations, like the LEED rating system, when choosing various building materials. Life cycle assessments allow for designers to fully understand environmental impacts along the life of materials, from material recovery to disposal, and other waste produced, like greenhouse gases.

Life cycle assessments and a focus on sustainability has drawn other forms of creative sustainable solutions, other than designing new materials, like retrofitting existing buildings and salvaging materials. For example, Mountain Equipment Co-op (MEC), salvaged timber from the bottom of rivers for their Ottawa store, and repurposed steel beams. Another trend is deconstruction, a retrieval of reusable structural components (eg. bricks) from existing buildings, to avoid the whole stream going toward landfills, while possibly bringing down the costs compared to buying newly produced materials.

As an important tool in discovering environmental impacts, life cycle assessments are critical in shaping buildings of the future, and the materials that make them. The current discourse of environmental sustainability with respect to global construction calls for creative action and holistic design with the future in mind.

An example of creative building material use, with salvaged materials, at a smaller scale