In normal weather, the window glass will not be broken by the wind. However, because the strength of the usual wind is small, there is indeed a situation that will not blow. What if you get high winds like a typhoon? In this case, there is a real possibility that the window glass will be broken by strong winds. Typhoons bring not only strong winds, but also flying debris and intense pressure changes. All this poses a danger to the glass.
The reason why glass is easily broken in typhoon
Strong wind pressure
We all know that typhoons are usually accompanied by strong winds. Do you know how strong a strong wind can be? Winds could reach 100 kilometers an hour or more. When strong winds hit buildings, they also create strong wind pressure. This pressure acts directly on the window glass. The larger the glass or exposed glass structure, the more likely it is to break due to excessive wind pressure.
Barometric change
The change in air pressure caused by typhoons is also one of the causes of broken glass. When a typhoon passes, the outside air pressure drops rapidly because of the high speed of the strong winds. The air pressure inside the building is always stable. So the difference in air pressure inside and outside the building creates a pressure difference. The glass is threatened by poor airflow. If the glass window can not withstand this pressure difference, it is easy to break the glass.
Flying debris
Typhoons, with their strong winds, can easily pick up small objects. Leaves on the ground, or roof tiles, or even branches on trees, these can be blown off. Fragments of these objects hit the glass at high speeds driven by strong winds. And it had a tremendous impact. Some items have sharp areas that directly damage the glass.
Rain erosion
Typhoons are usually accompanied by heavy rainfall. Rainwater seeps in along the cracks in the window frame. And erosion of the joint between the glass and the window frame. It is likely to cause deformation or aging of the window frame. Coupled with the impact of strong winds, the stability and wind resistance of the glass are affected.
An effective measure to prevent glass from being blown in typhoon
Typhoon weather is sometimes unavoidable, so we need to prepare protective measures in advance. The following are several methods that can effectively prevent glass from being damaged in typhoons and protect indoor safety.
Install storm glass
Storm glass is a type of glass specifically designed to withstand typhoons and strong winds. Common types of windproof glass include tempered glass, laminated glass and composite glass. Laminated glass has a layer of PVB (polyvinyl butyral) or SGP (ionic polymer) sandwiched between two layers of glass. Even when impacted, glass fragments can be stuck to the interlayer. It can minimize the damage to indoor and outdoor personnel.
Use storm curtains or storm window panels
If you are not willing to use the high price of tempered glass or laminated glass. You can also choose to install storm shutters or storm window panels outside the Windows. These devices are usually made of aluminum alloy, tempered or other high-strength materials. Provides an additional physical barrier. Effective against the impact of strong winds and flying debris on the glass.
Add protective film
Sticking an explosion-proof film or safety film on the surface of the glass can effectively enhance the impact resistance of the glass. These membranes hold the pieces of broken glass together. It has a similar principle to laminated glass.
Install protective netting or window grating
Installing a protective net or metal window grating on the outside of the window can effectively prevent wind-blown debris from hitting the glass. These devices can provide temporary protection in the event of a typhoon or as a long-term safety measure. Its service life is relatively strong, and it is more durable than the protective film.
