How a Plant Wall Contributes to Better Indoor Climate (2024)

How a Plant Wall Contributes to Better Indoor Climate (1)

Editorial Posted by Naava on June 13, 2022

Did you know that the effectiveness and benefits of plant walls have been scientifically proven?


A recent Gensler report confirms the vision we at Naava have been working towards for years now: the future of cities and buildings must be rooted in human health and wellness. As we slowly return to office environments, the quality of indoor air should be a priority both for developers that build office buildings and companies that inhabit them.

Various studies identify indoor pollutants as having considerable health implications on human beings within the built environment. Contemporary urban populations spend approximately 90% of their lives in these spaces, exposed to volatile organic compounds (VOCs). These anthropogenic pollutants contribute to poor-quality indoor air.

Technologies for Reducing VOCs are Not Effective

Many technologies exist aimed at reducing indoor VOCs. They include ozone generators, photocatalytic oxidation purifiers, absorption filters, and ionizers. Most of them are usually expensive and only remove a constrained number of VOCs. Their side effects include producing harmful by-products.

This closely explains the shift to indoor air purification techniques, with a focus on potted plants. Research into the efficiency of an indoor green wall has been prevalent in recent years. Some little evidence shows that active green walls are effective in biofiltration to remove volatile organic compounds found within the interior environment.

Assessing the Biofiltration System

In an assessment to determine the functional performance of biofiltration systems, commercial active living wall biofilters were in use, specifically from Naava.

This free-standing interior plant wall is a system with two practical components:

  • An inorganic growing medium that supports plant viability: It also comprises activated carbon to help in VOC removal and acts as a biofilter that draws ambient indoor air with an integral electric fan.
  • A system of 63 plants that grow horizontally from a circular compartment in the front vertical face of the casing: The plants are popular in indoor plant wall systems. This formed the basis of their selection and not their ability to remove VOCs.

MEK, a VOC commonly found in interior environments, was used as the challenge gas in the assessment to validate the test methodology and removal performance. The results showed a significant difference between inlet and outlet concentrations of MEK during the biofiltration measurement trial.

How a Plant Wall Contributes to Better Indoor Climate (2)

Case Studies into the Effectiveness of Plant Walls

A separate study based on a survey of 605 employees in 18 different places wanted to establish the effects of FreshWall on the working environment. The employees' task was to rank working conditions and personal health. The survey took place before and a couple of months after using FreshWall in the workplace.

The research questions were:

  • What effects does using FreshWall have on working conditions?
  • How does the usage of FreshWall affect employees' health?

Researchers analyzed the common effects of both research questions with linear mixed models. The assumption was that response variables were averages of many conditions or health questions. Personal information was also a covariate in the equation.

The results showed that common working conditions and the general health of the employees significantly improved in the course of using FreshWall. The most significant improvements in working conditions were:

  • Dry air
  • Low temperature
  • Stuffy air
  • Smell of mildew

The symptom that reported the most significant improvement was tiredness. The assumption is that all these health and working conditions changes were because of FreshWall and not a possible placebo effect under control. A co-source of the changes could be seasonal changes in the environment.

Benefits of Plant Walls

Plant walls are among the latest nature-based trends in interior design. They're healthy and beautiful, and their benefits far outweigh the costs and maintenance. In addition to the benefits demonstrated through research studies, bringing nature into the cities is a critical component for a sustainable future. Green infrastructure can be the target that brings plants to the very places where they're needed and where their value counts.

No other cladding material can provide these combined benefits at an affordable cost:

  • Air purification
  • Decreased ambient temperatures
  • Noise reduction
  • Improved sense of well-being
  • Increased productivity and creativity
  • Improved biodiversity
  • Attenuation of rainwater
  • Improved infrastructure value
  • Creation of a sense of community
  • Health benefits

Greener buildings provide better value, with studies showing that city buildings increase in value the closer they are to green spaces. For example, hotel rooms overlooking an outdoor living wall or green space command higher rates than those overlooking a car park. As environmental concerns become increasingly more prominent in personal and professional lives, plant walls are a commitment to sustainability.

Better Focus on Naava Plant Wall

Case studies show that a room with Naava positively affects feelings like happiness while it helps improve stress feelings. Naava smart green walls effectively decrease the chances of mistakes by approximately 41% in tasks that call for high cognitive brain performance.

The results of the case study prove that plant walls can lead to

  • Increased heart variability as an indicator of better recovery from stress
  • An increase in environmental comfort
  • Decreased levels of cortisol or the stress hormone
  • Increased levels of oxytocin or the feel-good hormone
  • Fewer mistakes in tasks that demand high concentration

If you want to transform your urban or office environment for improved air quality, an excellent place to get started is with the plant walls. At Naava, we can help you achieve this effect using our fully automated products that combine nature's beauty with modern technology.

Contact us today to schedule a consultation on how to bring nature and its fresh air indoors.

Contact us

Our experts will help design your space, old or new. Our consultation is always free! Send us a message and we will be in touch with you.

How a Plant Wall Contributes to Better Indoor Climate (2024)

FAQs

How a Plant Wall Contributes to Better Indoor Climate? ›

Plants naturally take in carbon dioxide and other pollutants and then expel fresh, clean oxygen. Green walls also help dampen noise and provide benefits connected to biophilic design: the concept that people work better and feel better when they have access to nature inside their places of work.

How do green walls help the environment? ›

Green walls can help restore our natural environment by:

improving air quality by absorbing up to 50% of particulate matter and 35% of nitrogen dioxide in built-up streets where pollution sits (street canyons) providing a home, refuge and food for birds and insects that would not otherwise exist.

What are the benefits of a living wall? ›

The benefits of living green walls are also functional, improving air quality, reducing energy costs, and serving as a natural acoustic filter, reducing noise levels in busy spaces.

How do plant walls work? ›

Green walls are vertical structures that have different types of plants or other greenery attached to them. The greenery is often planted in a growth medium consisting of soil, stone, or water. Because the walls have living plants in them, they usually feature built-in irrigation systems.

What is a plant wall called? ›

Living Plant Walls. Living plant walls are also often called green walls as they were the first type of green wall created. Living Walls are a structure that holds smaller plants on a vertical wall that generally has an integral irrigation system included in it.

How will the Great green wall help climate change? ›

By 2030, the Great Green Wall aims to restore 100 million hectares of land, sequester 250 million tonnes of carbon and create 10 million jobs. It is providing food and water security, habitat for wild plants and animals, and a reason for residents to stay in a region beset by drought and poverty.

How do green buildings help climate change? ›

Green buildings help reduce negative impacts on the natural environment by using less water, energy, and other natural resources; employing renewable energy sources and eco-friendly materials; and reducing emissions and other waste.

What are the five importance of walls? ›

The purposes of walls in buildings are to support roofs, floors and ceilings; to enclose a space as part of the building envelope along with a roof to give buildings form; and to provide shelter and security. In addition, the wall may house various types of utilities such as electrical wiring or plumbing.

What are the disadvantages of green walls? ›

Possible structural damage

There is also a risk of leaves and debris clogging drainage systems, as well as moisture retention within the building's walls if it isn't exposed to adequate sunlight.

When to plant a living wall? ›

Living walls can be planted with annuals, perennials, herbs or vegetables. Spring is a good time to plant, as young plants (ideally plugs) will establish readily and grow together. The best living wall plantings focus on the texture, shape, form and colour of foliage as much as flowers, to provide year-round interest.

What are the benefits of green walls and roofs? ›

Reducing heating and cooling costs by keeping buildings warmer in the winter and cooler in summer. Acting as stepping stones for wildlife linking areas of greenspace. Allowing the water to be fed into a grey water system for use within the building.

How long do green walls last? ›

Living walls can last a long time with the correct maintenance and a well-selected range of plants. Some plants will need replacing annually, however, others can last 10+ years when they are well cared for and selected for the container they will be living in.

How much does a LiveWall cost? ›

Size of Installation

The bigger the installation, the larger the cost. It really is that simple. In the business, we typically price based on the square foot of the installation. The average price can range from $100 to $225 per square foot of wall.

How do green walls help? ›

Green walls, also called vertical gardens, can increase energy efficiency, reduce indoor and outdoor temperatures, and improve air quality. There are different types of green walls. Green facades are systems that support climbing vines or cascading ground covers and include a soil bed at the bed of the structure.

What are the requirements for a living wall? ›

A vertical garden, or living wall used to grow food such as vegetables, herbs and fruits, requires several things: proper orientation, lighting, water, drainage, and nutrition. LiveWall supports these basic plants needs and yields healthy vertical gardens.

What are the benefits of green painted walls? ›

Green walls can reduce the temperature and noise level of a small space because the plants absorb and reflect energy. The plants create shade, therefore helping to reduce the temperature inside the room.

What are the environmental benefits of green building? ›

Green building not only decreases water waste, but may also contribute to enrich water reserves, preserves natural resources, defends biodiversity and enhances air and water quality. Green building also reduces your carbon footprint by producing less waste and decreasing the amount of toxic gases set free into the air.

What are the benefits of the green wall project? ›

Increasing biodiversity, restoring and protecting land, growing nutritious food, and creating green jobs for the millions of people living along its path.

How does green help the environment? ›

The environment benefits when people make choices that encourage things such as organic farming, responsible land use, and habitat preservation. For example, organic farming reduces greenhouse gas emissions and lowers air pollution. Tree conservation means better air quality.

References

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