Broken windows are a common issue faced by homeowners and businesses alike. Whether due to accidents, weather conditions, or intentional damage, broken windows not only compromise the safety of a property but also add to the cost of repairs and replacements. At Prentice Glass, we’ve handled countless window repairs and installations, giving us insight into the leading causes of window damage and, more importantly, how to prevent them. In this blog, we’ll discuss the most frequent reasons windows break and offer practical solutions to help keep your windows intact.

Weather-Related Window Breakage

One of the leading causes of window breakage is extreme weather. Strong winds, storms, and hail can wreak havoc on windows, mainly if the glass isn’t durable enough to withstand such forces. High winds can carry debris like branches, colliding with your windows and shattering them instantly. We know that weather can be unpredictable in London, and it’s essential to be prepared for these sudden changes.

To prevent weather-related window damage, consider upgrading to storm-proof or toughened glass designed to handle extreme conditions. Additionally, installing external shutters or storm windows can provide extra protection. Regular inspections after severe weather can help identify any vulnerabilities before they become significant problems.

swinging axe at security glazed window

Human Causes of Broken Windows

Human error is another common cause of window damage. Whether accidental breakage—like a child’s football going astray—or intentional vandalism, windows can easily be shattered by human activity. Vandalism, in particular, can leave properties vulnerable and require urgent repairs, which we frequently assist with at Prentice Glass through our emergency glazing service.

To minimise the risk of accidental breakage, encourage caution around fragile windows, especially in children’s play areas. Consider investing in laminated or reinforced glass for homes or businesses in high-risk regions for vandalism. These types of glass not only withstand more significant impact but also prevent the window from shattering completely, adding an extra layer of security to your property.

Poor Installation or Maintenance

Windows that aren’t properly installed or maintained are far more likely to suffer damage over time. Poor installation can cause stress points in the glass, leading to cracks that worsen over time. Similarly, if the window frames are deteriorating due to age or weather exposure, they may no longer effectively support the glass, increasing the risk of breakage.

This is why we always recommend professional window installation. At Prentice Glass, we ensure that every installation is done to the highest standards, giving your windows the structural support they need. Regular maintenance, such as checking for any cracks or weaknesses in the glass or frame, can also help prolong the life of your windows.

Temperature Fluctuations and Stress Cracks

Rapid changes in temperature can cause thermal stress. When one part of the glass heats up while another remains cool, stress fractures can gradually grow into larger cracks. This is especially common in older, single-pane windows or poorly insulated glass.

We recommend upgrading to double glazing or toughened glass to prevent thermal stress, which is better at handling temperature changes. These options provide better insulation, protecting your windows from extreme temperature fluctuations.

Impact from Objects and Debris

Flying debris from nearby construction sites, overhanging tree branches, or even stones thrown up by passing vehicles can all cause significant damage to windows. We often see clients whose windows have been damaged by everyday objects beyond their control.

Preventative measures include trimming overhanging trees and ensuring that nearby construction sites have protective barriers. Additionally, upgrading to stronger, more impact-resistant glass can help reduce the risk of damage from flying debris.

Poor-Quality Glass

Choosing low-quality glass may seem cost-effective initially, but it often results in more frequent repairs and replacements. Inferior glass is more prone to cracking and breaking, particularly when exposed to environmental stressors.

At Prentice Glass, we always recommend using high-quality glass for residential or commercial properties. Toughened, laminated, or double-glazed windows last longer and offer better protection against the various risks that can lead to window damage.

Security Risks and Break-Ins

Another common cause of broken windows is attempted burglaries or break-ins. Criminals often target windows, as they are a vulnerable entry point into a property. Unfortunately, this kind of damage can leave homes and businesses feeling unsafe.

Reinforced or laminated glass is an excellent solution for enhancing the security of your windows. These types of glass are more complex to break, and even if they crack, they remain in place, making it much more difficult for intruders to gain access.

Prevention Strategies for Window Breakage

When it comes to window damage, prevention is always better than cure. Regular inspections, upgrading to more substantial glass types, and ensuring proper maintenance are key to preventing costly repairs. At Prentice Glass, we offer a range of services that can help you strengthen your windows, from toughened and laminated glass to emergency repair solutions.

In summary, while there are many causes of broken windows, there are just as many ways to prevent them. By being proactive, investing in quality glass, and conducting regular maintenance, you can significantly reduce the risk of damage to your windows. Should the worst happen, our team at Prentice Glass will always be on hand to provide fast, efficient repairs.