Nowadays, everyone knows that broken bridge aluminum doors and windows are needed to make doors and windows, which have sound insulation, heat insulation and many functions. However, there are also many passwords that everyone does not know. The editor will tell you that broken bridge aluminum doors and windows are the most popular. There are 5 pitfalls, so be careful.

1. Use plastic instead of PA66 as spacers. Plastic is brittle and not resistant to aging. Merchants will also make a fuss about the insulation strips. Some use ordinary PVC insulation strips, and some use nylon PA66 insulation strips. . Normally, PA66 nylon strips should be used, which are resistant to high temperatures and are not afraid of expansion. PA66 nylon strips can be broken by hand, but PVC insulation strips may not be broken even if they are repeated more than ten times.

2. The thickness of the profile is insufficient. The aluminum mined from the aluminum ore is first melted into pure aluminum ingots. The aluminum ingots are then melted and other metals are added to make aluminum alloy rods, which are then drawn into various shapes using a profile machine. A profile, which is then processed into a window frame. Note that miscellaneous brands may recycle scrap aluminum into aluminum rods. The broken bridge aluminum profiles of big brands are all in compliance with national standards when they leave the factory. Only some miscellaneous brands, small brands, and many fake German brands are not up to standard. The thickness is only 1.2mm.

3. There are also good and bad sealing strips. The main function is to wear sealing strips on the battens and the inner sash to make the glass and the frame sash closer, thus ensuring the airtightness of the doors and windows. Sex, poor sealing strips will cause the broken bridge aluminum windows to leak, sealing strips are very important! Sealing strips include EPDM and elastomer strips. It is recommended to choose elastomer strips, which are environmentally friendly strips that can also be recycled and do not pollute the environment.

4. There are also many hardware pitfalls. When buying windows, the merchant will package the hardware. You should ask whether the hardware is domestic or imported. Good hardware can ensure the smooth opening and closing of the window for decades. No matter how good the windows are, if the hardware is not good, it will also affect the sealing, heat insulation, and thermal insulation performance. Generally, if the hardware is included in the unit price or given free of charge, don't buy it cheap, because often such things are not good hardware. When it comes to hardware, choose the brand.

5. The excess window area is calculated as loss. Some merchants offer cheaper prices in stores, but when it comes to the actual on-site measurement, the cost will be much more. Some even charge additional fees during the installation. Others add 20% more area as loss after measuring the area. Be sure to sign a contract stating the price, no additional items, etc.