Myths about large windows

Contemporary architecture is evolving rapidly, with natural light being a key element. In response to this demand, large glass windows are gaining popularity, becoming an integral part of modern building designs. Utilizing expansive glass surfaces not only optimizes interior lighting but also creates a sense of spaciousness, openness, and a closer connection to nature.

Year after year, we see growing interest from designers and investors in glass facades, panoramic windows, and glass walls. This trend is evident in both residential and commercial buildings. Glass installations have become symbols of modernity and luxury, offering unlimited design possibilities. Large windows and glass panels allow for interiors that blend harmoniously with their surroundings, which is especially desirable in single-family homes where proximity to nature and natural landscapes play a crucial role.

Despite the numerous benefits that large glass windows bring, many myths and misconceptions have arisen around their use. Some people fear that such solutions might lead to high heating costs, pose security risks, or require complicated maintenance. Some of these beliefs stem from the past when glass technologies were not as advanced as they are today, while others result from a lack of knowledge about modern materials and architectural solutions.
The aim of this article is to dispel the most common myths about large glass windows. Let’s take a closer look at the realities and facts behind modern glass technologies.

Myth 1: Large glass windows are not energy efficient

Many people believe that large glass windows are synonymous with poor energy efficiency. This belief stems from the fear that expansive glass surfaces can lead to significant heat loss in winter and excessive overheating in summer. Traditional windows, especially those made from older materials, often contributed to high heating and cooling bills, reinforcing this negative perception.

Fact:

In reality, modern glass technologies and advanced architectural solutions have changed the game, making large glass windows not only aesthetically pleasing but also energy-efficient.

Modern glass technologies:

  • Low-emissivity (Low-E) glass: Coated with special layers, Low-E glass effectively reflects heat back into the building during winter while reducing the amount of heat entering the summer. This keeps interiors cooler on hot days and warmer on cold ones.
  • Triple glazing: Consisting of three layers of glass separated by gas layers (such as argon or krypton), triple glazing significantly increases the thermal insulation of windows. This solution minimizes heat loss and enhances the energy efficiency of buildings.
  • Thermal insulation coatings: Advanced thermal insulation coatings on the glass surface can further enhance its insulating properties, making large glass windows even more energy-efficient.

Passive Systems:

  • External shutters: Automatic shutters can be programmed to close during the hottest parts of the day, blocking direct sunlight and reducing interior overheating.
Large windows in a modern home

Myth 2: Large glass windows are unsafe

Many concerns surround the safety of large glass windows. People often worry that expansive glass surfaces could be easy targets for burglars, pose accident risks, especially for children, and that the glass might easily break, causing serious injuries. These beliefs have roots in the past when security technologies were less advanced, and safety standards for glass were less stringent.

Fact

Modern technologies and advanced security solutions ensure that large glass windows can be as safe as traditional building materials.

Alarm Systems:

  • Alarm systems: Modern alarm systems can be integrated with large glass windows, equipped with motion sensors that immediately alert homeowners and security services of any break-in attempts. This enables a swift response to potential threats.

Modern security solutions

  • Tempered glass: This type of glass undergoes a special heat treatment process, making it much more resistant to impact and pressure. If it does break, tempered glass shatters into small, blunt pieces, significantly reducing the risk of serious injury.
  • Laminated glass: Consisting of at least two layers of glass bonded together with a PVB (polyvinyl butyral) film, laminated glass holds together even when shattered. This prevents the glass from breaking into sharp shards and reduces the risk of cuts. Laminated glass is also harder to penetrate, making it more resistant to break-in attempts.

Building safety standards for glass:

  • Regulations and standards: Many countries have stringent safety standards for glass in construction. These regulations include requirements for mechanical strength, impact resistance, and the behavior of glass upon breaking. Adhering to these standards ensures that modern glass installations meet the highest safety criteria.
  • Testing and certification: Glass used in large windows undergoes numerous tests and must have appropriate certifications confirming its safety. These tests cover both impact resistance and performance in extreme weather conditions.
Large windows with a mountain view

Myth 3: Large glass windows compromise privacy

Many people worry that large windows and glass walls might compromise residents’ privacy. It’s commonly believed that these architectural solutions provide an easy view into the home or apartment from the outside, which can be particularly problematic in densely populated urban areas or homes located close to neighbors.

Fact

Modern glass technologies and architectural solutions offer several methods to maintain privacy even with large glass installations.

Visibility control glass technologies

  • Reflective glass: This type of glass is coated with a special layer that reflects external light, acting like a one-way mirror. This means that during the day, people outside cannot see inside the building, while residents can still enjoy unobstructed views.
  • Frosted glass: Frosted glass is opaque and provides complete privacy by diffusing light and preventing any view into the interior. While often used in bathrooms, frosted glass can also be utilized in other rooms where privacy is a priority.


Architectural solutions:

  • Building orientation: Thoughtful positioning of the building and window placement can significantly enhance privacy. For example, orienting the largest glass surfaces towards a garden, inner courtyard, or areas without direct neighbors can help maintain privacy.
  • Use of curtains: Traditional solutions like curtains are highly effective in ensuring privacy. Modern systems are automated, allowing residents to control when the curtains are open or closed, providing flexibility and convenience.
Large modern windows

Myth 4: Large glass windows are hard to maintain

Many people believe that large glass surfaces are difficult to keep clean. This concern arises from the fear that cleaning and maintaining such windows can be troublesome, time-consuming, and expensive. Keeping large windows and glass panels aesthetically pleasing seems particularly challenging, especially for buildings located in areas prone to pollution or harsh weather conditions.

Fact

Modern technologies and innovative solutions make maintaining large glass windows much easier than one might think.

Modern cleaning technologies

  • Self-cleaning glass: Self-cleaning glass is an innovation that addresses the issue of dirty windows. Utilizing advanced technology, sunlight and rainwork together to keep the glass clean. A special coating on the surface of these windows breaks down organic dirt under UV radiation. Then, the hydrophilic properties of the coating ensure that rainwater spreads evenly across the glass, washing away dirt without leaving streaks.
  • Cleaning robots: The market offers modern window-cleaning robots capable of automatically cleaning large glass surfaces. These devices are equipped with suction systems and brushes that effectively remove dirt, dust, and grime.

Practical tips for window maintenance

  • Regular cleaning: To keep large glass windows in good condition, regular cleaning is recommended every few months, depending on local environmental conditions. Regular washing prevents the buildup of stubborn dirt and stains.
  • Appropriate cleaning products: Use dedicated window cleaning products that do not leave streaks and are safe for glass surfaces. Avoid harsh detergents and abrasive tools that can scratch the glass.
  • Professional cleaning services: For large, hard-to-reach glass surfaces, consider hiring professional window cleaning services. Specialists have the proper equipment and cleaning agents, allowing for quick and effective maintenance of windows in pristine condition.

Summary

In this article, we have presented and debunked four common myths about large glass windows in construction:

Myth 1: Low energy efficiency

Fact: Modern glass technologies, such as low-emissivity glass, triple glazing, thermal insulation coatings, and shutters, significantly enhance the energy efficiency of buildings with large glass windows.

Myth 2: Unsafe

Fact: Advanced security solutions, including tempered glass, laminated glass, security films, and alarm systems, ensure that large glass windows are safe and meet stringent safety standards.

Myth 3:  Loss of privacy

Fact: Visibility control technologies, such as reflective and frosted glass, along with architectural solutions like strategic building orientation and curtains, allow for privacy even with large glass surfaces.

Myth 4: Hard to keep clean

Fact: Modern cleaning technologies, such as self-cleaning glass and cleaning robots, along with practical tips, make it much easier to keep large glass windows clean and well-maintained.

Modern house with large windows
Benefits of using large glass windows in modern construction
  • Aesthetics and modern appeal: Large glass windows give buildings an elegant and contemporary look, enhancing their visual value.
  • Access to natural light: Glass windows maximize the use of natural light, improving living and working conditions while reducing the need for artificial lighting.
  • Energy efficiency: Modern glass technologies enable high energy efficiency, reducing heating and cooling costs.
  • Connection with the outdoors: Large windows and glass walls seamlessly connect the building’s interior with the surrounding landscape, increasing the sense of space and connection with nature.
Tips for investors and architects designing with large glass windows
  • Choose the right glass technologies: Invest in low-emissivity glass, triple glazing, or reflective glass to ensure both energy efficiency and privacy.
  • Implement smart energy management systems: Integrate glass installations with building management systems that automatically adjust shutters and curtains based on weather conditions and time of day.
  • Consider local conditions and context: Plan glass installations with local climate conditions, building orientation, and neighborhood context in mind to maximize the benefits of natural light and minimize energy losses.

With the right approach, large glass windows can become an integral part of modern, sustainable, and comfortable construction.