English 
How to choose between inward-opening windows and outward-opening windows?
Between inward-opening windows and outward-opening windows, one opens inward and the other opens outward. Have you ever struggled with "which one should I choose between the two?"
In fact, there is nothing complicated about inward-opening windows and outward-opening windows. Taking inward-opening inverted windows (representative of inward-opening windows) and outward-opening top-hung windows (representative of outward-opening windows) as examples, we will help you understand the differences between the two types of windows and teach you how to choose the right window.
★★★ Outward-opening top-hung windows
● The full name is outward-opening and top-hung windows. The commonly used outward-opening and top-hung windows in homes are generally a combination of an outward-opening top-hung window and a left- or right-opening outward casement window.
● The hinges (hinges) of outward-opening top-hung windows are installed on the upper side of the window, and the opening direction is the outdoor side; outward-opening top-hung windows often adopt a multi-locking point structure design. When the doors and windows are closed, the top-hung window is fixed by its hardware accessories, making it difficult to open from the outside and has excellent anti-theft capabilities. At the same time, the top-hung window can also reduce accidental injuries such as head collisions.
● Applicable places: outward-opening top-hung windows are often used in low-rise buildings, attics, sunrooms, etc. In addition, outward-opening top-hung windows often appear on glass curtain wall windows in office buildings.
★★★ Inward-opening and inward-turning windows
● The full name is inward-opening bottom-hung window. The inward-opening inverted window commonly used in homes is usually a combination of an inward-opening bottom-hung window and a left- or right-opening inward casement window.
● The core function of the inward opening and inward tilting window is that it can achieve two opening methods of inward opening + inward tilting with the help of hardware. The emergence of the inward-opening and inward-turning window type realizes the superposition of the performance of doors and windows, and improves the living experience of some people: in the case of inward-turning, it is conducive to ventilation and is not afraid of ordinary rain; inward-opening can enhance ventilation, facilitate scrubbing, and facilitate exterior installation. Shading to reduce building energy consumption without the risk of external opening windows falling.
● Applicable places: Inward-opening inward-turning windows are a type of inward-opening windows. Therefore, the scope of application of inward-opening casement windows and inward-opening inward-turning windows are all competent.
The difference between the two window types is also obvious: an outward-opening top-hung window (the hinge is installed on the upper side of the window and opens to the outside, which is an outward-opening window among casement windows); an inward-opening and inverted window (the hinge is installed on the upper side of the window) The lower side of the window opens to the interior and is an inward-opening window among casement windows). The difference in hinge position is precisely the most essential difference between the two window types.
Casement windows can be divided into inner and outer openings, so the applicable scope of outward-opening top-hung windows and inward-opening inverted windows are also different. (Outward opening) is suitable for buildings with seven floors or less, villas, and houses with loud noise near the road; (inward opening) has good performance and high safety factor; can be used in most climate areas and buildings; especially suitable for high-rise buildings.
01
Precautions for home application - outward-opening top-hung windows
1. The ventilation effect must be coordinated: if there is a window, it is natural to have ventilation. Friends who often open windows for ventilation should pay attention! The smaller the opening angle, the smaller the effective ventilation area. Therefore, in different opening methods (windows), the ventilation effect is also quite different. When the ventilation effect of outward-opening top-hung windows is not dominant, we can appropriately switch between outward-opening/top-hung modes to achieve better daily ventilation.
2. Pay attention to safety matters: Since it can be opened outward, the outward-opening top-hung window cannot avoid the risk of the sash falling (when the top-hung window is opened, the gravity of the sash is directly supported by the sliding brace + screw fixation, unlike other windows that have no gravity. The entire window frame is supported). Therefore, we need to pay more attention to the use of hardware accessories for outward-opening top-hung windows. Once the accessories are found to be damaged, they should be replaced in time and lubricated regularly to ensure smooth use. After all, preventing problems before they happen is the most effective way to avoid harm!
In addition, the opening method of the top-hung window also makes the hidden danger of children's probing and falling injuries still exist. It is not recommended to install outward-opening top-hung windows on floors that are too high; if necessary, residents on lower floors can install screens for outward-opening top-hung windows.
02
Precautions for home application - inward-opening and inward-turning windows
1. Inward-opening and inward-turning windows are just window types, and they are not necessarily equated with the performance of doors and windows.
We all know that the performance of doors and windows is determined by many factors. Taking sealing performance as an example, an inward-opening inverted window will have one more seal than an ordinary outward-opening window, and theoretically the sealing performance will be better. However, if the hardware is not adjusted properly during the assembly process, resulting in the sealing strip not being pressed tightly when closing the window, then it will be no different from an ordinary outward-opening window.
Therefore, are the overall performance of inward-opening and inward-turning windows good? How is it used? A lot depends on the quality of the hardware system. When purchasing, we need to ask the merchant what brand the hardware system (whole window) uses; in addition, we should also keep our eyes peeled to see if the hardware part (in a conspicuous position) is marked with a big brand's logo.
2. After the inward-opening inverted window is installed, how to quickly check its sealing effect?
Inward-opening and inward-turning windows generally have three seals. If the sealing performance is not good, the money spent by the customer will not be worth it. How to check its tightness? You can try this - after opening and inverting the inward-opening window several times, turn the handle to lock the window; then press the four corners of the window hard (focus on the top left and right corners). If you find any If it shakes or the four corners shake unevenly, it is likely that the window is not tightly sealed. In such a situation, it is recommended to negotiate with the installer for reinstallation.
3. When is it more appropriate to choose inward-opening and inward-tilting windows?
The advantage of inward-opening and inward-turning windows is ventilation. In addition, the dust-proof effect of the inward-opening and inverted windows is obvious: when the inverted windows are opened, it not only changes the flow direction of the indoor air, but also adds a protective barrier to allow outdoor dust to settle on the surface of the door and window glass. Therefore, it is recommended to choose it on floors with dusty roads.
In addition, Suifu Doors and Windows recommends that the doors and windows of the children's room should be inward-opening and inward-turning windows. When the inward-opening inverted window is inverted, the upper part of the window sash is only a few centimeters away from the window frame. This opening angle greatly avoids the risk of children accidentally falling from the building, making safety more assured.
