How to choose smart doors and windows for high-rise residential buildings with wind pressure resistance? This guide will help you avoid pitfalls

With the increasing number of high-rise buildings in cities, the living comfort and safety of high-rise residences have become the focus of people's attention. As an important home product that enhances the living experience, smart doors and windows must not only have convenient intelligent control functions, but their wind pressure resistance performance is also a core indicator related to residential safety. After all, high-rise residences face stronger winds and greater wind pressure. If smart doors and windows are not strong enough to withstand wind pressure, not only may problems such as door and window deformation, air leakage, and rain leakage occur, but in severe cases, it may also threaten the safety of family members. So, how should high-rise residential buildings choose smart doors and windows with wind pressure resistance?

1. First understand the “wind pressure challenges” of high-rise residential buildings before you can choose the right smart doors and windows.

The core reason why high-rise residential buildings have strict requirements on the wind pressure resistance of doors and windows lies in the "positive correlation between height and wind force." According to the principles of fluid mechanics, the higher the height above the ground, the fewer obstacles the air flow will encounter, and the wind speed will increase significantly, resulting in greater wind pressure. Generally speaking, for residential buildings with more than 10 floors, the wind speed will be 30% - 50% higher than the ground level, and for high-rise buildings with more than 20 floors, the wind pressure may even reach 2 - 3 times that of the ground level.

This continuous strong wind pressure will have many impacts on doors and windows: Under long-term wind pressure, smart doors and windows with weak wind pressure resistance may experience deformation of window frames and loose glass, leading to a decrease in the sealing performance of doors and windows, causing air leakage and water seepage problems. In extreme weather such as heavy rains and typhoons, if doors and windows cannot withstand strong wind pressure, there may also be safety hazards such as glass breakage and door and window sash falling off. Therefore, when choosing smart doors and windows for high-rise residences, wind pressure resistance must be given top priority, rather than simply pursuing the richness of smart functions.

2. The “core hard indicators” of wind pressure-resistant smart doors and windows are indispensable.

If you want to choose wind pressure-resistant smart doors and windows suitable for high-rise residences, you can't just listen to the merchants' propaganda. You must learn to pay attention to the core technical indicators and design details of the product. Specifically, you can start from the following four aspects:

(1) Look at the material: Choosing the right “skeleton” is the basis for wind pressure resistance

The "skeleton" of doors and windows - profiles, directly determines the lower limit of their ability to resist wind pressure. Currently, the common smart door and window profiles on the market mainly include aluminum alloy, broken bridge aluminum, plastic steel, etc. Among them, broken bridge aluminum profiles are the first choice for high-rise residential buildings. The broken bridge aluminum profile adopts a multi-cavity structure design, and the thickness of the profile must be more than 1.4mm (it is recommended to choose a thickness of 1.6mm and above for high-rise buildings with more than 20 floors). This structure can effectively disperse wind pressure and reduce the possibility of deformation of doors and windows.

At the same time, attention should be paid to the alloy composition of the profile. High-strength aluminum alloy profiles containing elements such as magnesium and silicon have higher tensile strength and yield strength and better wind pressure resistance. In contrast, ordinary plastic steel profiles have low hardness and are prone to aging and deformation when exposed to strong wind pressure for a long time. They are not suitable for super high-rise residential buildings with more than 30 floors.

(2) Look at the glass: "Safety shield" needs to take into account both wind pressure resistance and explosion protection

Glass is an important component for smart doors and windows to withstand wind pressure. When choosing smart doors and windows for high-rise residences, the configuration of the glass is particularly critical. It is recommended to give priority to double-layer insulated tempered glass or even triple-layer insulated tempered glass (above the 30th floor or in areas prone to typhoons). The impact strength of tempered glass is 3-5 times that of ordinary glass. It can effectively withstand the impact of strong wind pressure. Even if it breaks, it will form small particles without sharp angles, reducing safety risks.

In addition, the sealing performance of insulating glass is also very important. The insulating glass adopts a double-pass sealing design. The first pass is sealed with butyl glue, and the second pass is sealed with polysulfide glue or structural glue. This can effectively prevent air from entering the hollow layer, avoid fogging of the glass due to changes in air pressure, and also enhance the overall wind pressure resistance of the glass.

(3) Look at the structural design: details determine the “upper limit” of wind pressure resistance

The impact of the structural design of smart doors and windows on their wind pressure resistance cannot be ignored. The following details need to be focused on:

The connection method between the window frame and the wall: Smart doors and windows will be fixed to the wall using expansion bolts, and the distance between the fixed points shall not exceed 600mm. At the same time, waterproof insulation mortar or foam glue is filled between the window frame and the wall, which can not only enhance the stability of the connection between the door and window and the wall, but also prevent the door and window from being displaced due to wind pressure.

Sealing structure of door and window sash: It is recommended to choose smart doors and windows with multi-layer sealing design, such as three or four layers of sealing tape. The material of the tape is preferably EPDM tape (anti-aging, good elasticity), which can effectively prevent strong wind from penetrating through the gaps. It can also improve the wind pressure resistance of doors and windows and prevent door and window sash from shaking under the action of wind pressure.

Stability of the drive system: The opening and closing of smart doors and windows depends on the drive system. When choosing a high-rise residence, it is necessary to ensure that the drive motor has sufficient torque and can operate stably in a strong wind pressure environment. At the same time, the drive system should have an overload protection function to avoid motor damage due to excessive wind pressure.

(4) Look at testing and certification: you will feel more at ease if you look for authoritative standards

When choosing smart doors and windows for high-rise residences, be sure to check whether the product has authoritative wind pressure resistance testing certification. The current domestic testing standard for the wind pressure resistance of doors and windows is GB/T 7106-2019 "Classification and Testing Methods for Airtightness, Watertightness, and Wind Pressure Resistance of Exterior Building Doors and Windows". This standard divides the wind pressure resistance of doors and windows into levels 1 to 9. It is recommended for high-rise residences to choose products with a wind pressure resistance performance level of no less than level 6 (level 6 can withstand wind pressure values ≥3.0kPa, suitable for 20-30-story residences), 30 For super-high-rise residential buildings above one storey, it is recommended to choose products of level 7 and above (≥3.5kPa).

At the same time, you can also check whether the product has passed China's compulsory product certification (3C certification), especially the tempered glass part, which must have the 3C certification mark to ensure that product quality meets safety standards.