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What is a system door and window, and what are its characteristics?


01 Price and brand of system doors and windows

Overview: In recent years, the development of system doors and windows has been blowout every year, and consumers have been able to easily purchase many brands of system doors and windows in the market.

The price range of domestic mainstream system window brands ranges from 1,000-3,000 yuan/㎡, and the price exceeds the urban per capita purchasing power level, which is a luxury in the decoration category.

Details: The price of system doors and windows is linked to the performance of doors and windows, the quality of materials used, and the size of the brand. Go shopping aimlessly, and it is easy to buy products that "do not match your identity".

The difference between the brand and price of system doors and windows can be roughly divided into the following three types:

1. The main cost-effective system doors and windows (average price = total price/total area) with an average price of around 1,000 to 1,500 yuan may have three characteristics: (1) material quality and product workmanship are not top-notch; (2) brand awareness is relatively high Small; (3) Not all series in the brand are worth buying, and the main products are often the most cost-effective;

2. Mid-to-high-end brand system windows with an average price of around 1500~2500 yuan; its possible three characteristics are: (1) one or more of material quality, product workmanship, product performance, and brand awareness are top-notch; (2) doors and windows The configuration and performance are mostly better than the first gear; (3) There are many parallel imports pretending to be mid-to-high-end brands;

3. A well-known system window with an average price of more than 2,500 yuan; its three possible characteristics can be summarized as follows: (1) Brands imported from Germany and Japan, and a small number of domestic first-tier; (2) The product has obvious advantages in the past, but now it is not as good ; (3) Not recommended for home improvement consumers;

In addition to glass and hardware, the system doors and windows may also have other small additions: cavity filling, appearance color, matching screen windows, splicing square tubes, value-added services for delayed warranty, etc., which will also slightly affect the price of doors and windows .

02 The difference between the performance of system doors and windows and non-system doors and windows

Overview: Most of the system door and window manufacturers in China will take their own door and window products for inspection, and then get a sheet marked with specific "wind pressure resistance, air tightness, water tightness, thermal insulation, sound insulation" 5 door and window performance The "proof of identity" of the parameter

Details and in-depth: Consumers can use the five major performance parameters of "wind pressure resistance, air tightness, water tightness, thermal insulation, and sound insulation" to specifically obtain the performance of the system's door and window products.

For example, the wind pressure resistance performance means that when the doors and windows are closed, the doors and windows with higher wind pressure resistance level can withstand stronger wind and rain without damage.

Generally, the wind pressure resistance standards of doors and windows formulated in various places are between 3-5 (the level required for high-rise and coastal wind pressure resistance is higher). The high-rise windows are a bit wobbly, this time I used a larger series and thicker glass) to barely reach the passing line.

The basic local wind pressure has been considered in the structural design of system doors and windows, such as increasing the width of the frame (the same is true for non-system windows), increasing the wall thickness of the profile, and the number of cavities.

Therefore, a relatively high level of wind pressure resistance (level 6-8) can generally be obtained after the inspection, which ensures that it can be used safely even under a once-in-a-century typhoon.

There is also an important structural embodiment that the wind pressure resistance of system doors and windows is stronger than that of non-system doors and windows-reinforced mid-stiles (and strengthened splicing).

Now home decoration doors and windows are popular with large fixed and small opening door and window separation methods, and the middle mullions (▽ schematic diagram) of non-system doors and windows that "only grow longer and not thicker" cannot meet the side effect of the overall enlargement of doors and windows-insufficient support.

As a result, the whole door and window shake in the wind, and the opening and closing of the window sash feels obvious shaking.

The doors and windows of the system generally use reinforced stiles or reinforced pipes for windows over 1.8 m (not excluding unprofessional businesses). The thickened stiles are equivalent to Peng Baydee after ten years of marriage, and they are no longer afraid of being blown by typhoons Gone...thus solving the problem of "bending resistance" due to too large windows.

Another example is air tightness and water tightness, both of which represent the "tightness" of doors and windows. It refers to the ability to prevent rainwater and air from penetrating into the room after the doors and windows are closed.

Non-system doors and windows will do much worse in this regard, especially non-system sliding doors and windows, "wind leakage on windy days, rain leakage on heavy rainy days" will be particularly serious

The sliding doors and windows of the system are sealed with rubber strips, hidden drainage, high and low rails (sliding windows), composite rubber strips and other structures, so that sliding windows can also have 4-5 levels of air and water tightness, which is even higher than that of some non-system exteriors. Opening doors and windows (Note: Due to structural factors, sliding doors and windows are naturally several levels worse in sealing than outward-opening, inward-opening and inverting windows;)

The doors and windows of the system open outwards and inwards (note: the air-water tightness of the system outwards, inwards and inwards windows is 5-6, and the airtightness is generally 6-8;) the multi-channel sealing structure that has the greatest impact on the sealing performance, Basically found "no wind and no rain" after the windows are closed.

There is also the thermal insulation performance K value, which is the main index used to measure the thermal insulation performance of doors and windows. The lower the K value, the better the ability of doors and windows to block indoor and outdoor temperature exchange, that is, the better the thermal insulation performance of doors and windows

The biggest difference between system doors and windows and non-system doors and windows lies in the thermal insulation performance.

For example, heat insulation strips with large width of system doors and windows, more profile cavities, isothermal structure, multi-channel sealing (that is, the upper part improves water and air tightness, and the five major properties affect each other), cavity filling, and those with lower k value Glass (non-system windows can also be equipped with glass with low K value), can a little bit widen the gap with non-system doors and windows in terms of heat insulation

The last sound insulation performance is mainly related to sealing and glass selection. Everyone can understand it so I won’t introduce it further. Compared with non-system doors and windows, the advantages of system doors and windows in terms of sound insulation performance are mainly: better sealing, and can withstand larger and thicker glass.

The five performances of system doors and windows affect each other and are closely related, because the overall structure of system doors and windows contributes to the joint play of its five performances.

03 Performance stability of system doors and windows

Overview: After reading the performance differences between system doors and windows and non-system doors and windows in Chapter 2, many people will have doubts: "The five major performances of system windows seem to be useless, why not seal them better? It feels worthless to spend so much money ..." In fact, the good performance of the system's doors and windows should be considered together with the stable performance.

A large part of the cost of system doors and windows is used to maintain stable performance. Compared with many ordinary doors and windows, the real service life is only about 2 to 5 years

Generally, system door and window manufacturers who are less confident will say "guaranteed to be used for 15-20 years", and those with strong confidence will even say "the life and performance of doors and windows are the same as the life of housing construction."

Details: Most of the common doors and windows are made of general-purpose materials, and the boss will use low-cost, low-quality raw materials that do not meet the national standard in order to save money, so it is difficult to adapt to the performance requirements of the high-demand environment (high demand refers to: elevated and other sides) Window installation environment, or people who are particularly sensitive to noise), and the performance of doors and windows is decreasing year by year (the most obvious is that the hardware is easy to rust and break, the rubber strips age quickly, and the sealing of doors and windows is not as good as one year).

The profiles, hardware, glass, heat insulation strips, rubber strips, wool strips and other major materials used in the production of system windows are generally exported by professional profile R&D personnel hired by manufacturers according to different performance requirements, and customized to upstream raw material processing enterprises. In this way, although the cost of warehouse custom molds, raw material batch customization and storage costs will increase, doors and windows of different specifications can use "fit" materials.

Moreover, the more quality-oriented factories are, the more they will order from reliable upstream raw material processors, which are much more reliable than the three-free materials used for ordinary doors and windows in small workshops on the street (the essence is to strictly follow the requirements of the national standard):

For example, aluminum profiles that meet national standards ensure the strength of doors and windows, higher-precision hardware ensures reasonable load-bearing, smoother use, and longer opening and closing life. Rubber strips with higher glue content have better elasticity, better sealing, and longer life. The tops that have been siliconized are waterproof and the hair will not fly around.

These two reasons make the system doors and windows have a longer life than ordinary doors and windows, and the performance is basically stable within the life span.

In-depth: What kind of system door and window material performance is more stable, see below.

(1) Profiles, system door and window profiles generally have no pits, and the quality of large and small profile brands is not much different.

(2) The source of hardware, imported hardware and domestic first-line can guarantee stable performance. Special attention: not only ask the hardware brand of the handle, but also the whole set of hardware brand;

(3) The brand and material of rubber strips, heat insulation strips and wool tops; special attention: merchants can be asked to provide purchase and sales vouchers.

(4) Glass, glass deep-processing factories must have a reliable source. For details, you can ask the merchant whether the processing factory has a glass processing certificate

04 Advantages of system door and window manufacturers

Overview: Because the system window has more processing procedures than ordinary doors and windows, more auxiliary materials are used, so the processing accuracy is higher. Therefore, only manufacturers with a certain scale can produce products with moving details. Doors and windows processing with general strength The factory can't do the details well.

Details: The manufacturers of system doors and windows are concentrated into two categories: 1. The local well-known door and window manufacturers with a certain scale; These two types of manufacturers all have the ability of high processing precision and the ability to ship to the whole country.

High processing precision: The increase in equipment procurement costs has increased the investment in fixed assets of door and window companies, which has raised the overall threshold of the system's door and window industry to a certain extent, and can ensure good precision.

And as the machine automation of system door and window processing enterprises is getting higher and higher, the degree of worker participation is smaller, and the precision of the doors and windows produced will be more and more guaranteed.

Delivery of finished windows: Now the system door and window brand is very similar to the overall wardrobe customization industry a few years ago, and the door and window market is evolving towards commercialization and branding. For example, in provinces such as Guangdong, Shandong, and Northeast where the door and window industry is relatively developed, many brands have the ability to send "finished windows" to all parts of the country.

As a result, consumers can choose more brands, and they can no longer only buy ordinary doors and windows produced by small local processing factories (or workshops). Consumers who have higher demands on the performance of doors and windows have better choices.

Moreover, "finished windows" are more conducive to the protection of door and window products. Aluminum alloy and glass are easily scratched and scratched during transportation. Too obvious marks will make perfectionist consumers unhappy (a small amount of scratches is difficult to avoid ), the "finished window" will basically be equipped with frame and glass protection during the transportation process, which can reduce scratches and reduce the possibility of glass accidents.

In-depth: Of course, not all system window brands have high-end equipment, and most of them are still pursuing the mechanization of CNC production equipment. This is also something that consumers need to consider when purchasing. Baydee would like to give the following two suggestions:

1) The more advanced equipment with less manual intervention, the stronger the production strength of the manufacturer. Consumers can ask merchants for photos or videos of factory appearance and equipment, and conduct on-the-spot comparisons (ps: on-site inspection of door and window factories, and going to the merchant’s installed home to see are the two best skills for consumers to buy) .

2) Before fully automatic production is realized, "workers' experience and standards" are as important as whether the equipment is good or not. Consumers can compare by asking merchants for photos or videos of production projects, workshop processing standards and reward and punishment systems, as well as on-site inspections.

If consumers care about the production capacity of door and window companies, they can find and eliminate a large number of door and window companies with poor processing levels.

05 Installation of system doors and windows

Overview: After the system window is delivered to your home, you only need the installer to install the window frame, apply glue to make it waterproof, and install the glass. Compared with non-finished windows, you need to install and debug hardware on site, punch keyholes and install locks, etc., which is less expensive. Some steps require precision and debugging.

As a result, the difficulty of installing doors and windows and the level of installers are greatly reduced. Therefore, after the system windows are installed and delivered, consumers will have a better experience.

Details: The installation of doors and windows affects 30% of the user experience after delivery. Compared with the delivery of "finished windows" of system doors and windows and "non-finished windows" of non-system windows, the biggest advantage is that no hardware assembly and debugging time are required.

System window manufacturers will directly complete the drilling and milling of the most difficult hardware installation positions, installation and finished product debugging in the factory. The advantages of this are high precision, smooth and beautiful operation experience, and good airtightness.

In-depth: Although the price of system windows will be higher than that of ordinary doors and windows, there must be some (emmm, this number) merchants who want to save money on installation, so system windows should also focus on installation factors——

(1) The experience level of the workers (it is not good for the boss who does not understand installation to outsource to the installation master who has just entered the industry); (2) The auxiliary materials for installation are mainly screws, sealants, and foaming agents. Make sure that the merchants use good quality (especially screws and sealants); (3) Whether there are standards and specifications for installation, and whether there is someone under professional supervision to determine the details of the installation are in place. We believe that the system window company must be missing. .

06 The future trend of system doors and windows

Finally, let’s talk about the trend of system windows. With the emergence of system windows, the price of doors and windows may be directly linked to the performance and material quality of doors and windows in the future, so as to ban or improve the "low-end" door and window stores with too poor quality and the "high-end" with too high prices. Window shop. Although the current system window ≈ high price is not a product that most consumers can afford, but in the next few years, with the upgrading of processing tools, the emergence of more system window brands and the development of the market situation:

The windows in the 90s and 00s are aging, and the market demand for renovation is strong, blue ocean~

The country's building energy-saving standards are getting higher and higher. In the future, more cities will introduce k-value requirements for doors and windows, which will greatly drop the blue ocean~~~

The emergence of system windows is more in line with the consumption concept of the younger generation born in the 1980s and 1990s, because it can indeed improve consumers' requirements for thermal insulation and sound insulation doors and windows, as well as the aesthetic needs of large fixed and small openings, and can guarantee 15-20 years of use. Performance is unchanged.

The price of the system window will tend to be civilian, so that more consumers can afford it and think it is cost-effective.

However, in the future, the system window will truly have all kinds of brands flourish, or form a unified brand like home customization and integrated wardrobes, or will it eventually become the reincarnation of plastic steel windows a few years ago, and die in the era of bad money driving out good money.

Everything has yet to stand the test of time.