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UPVC doors and windows are commonly used building doors and windows in our homes. Plastic-steel doors and windows occupy half of the market. Plastic-steel doors and windows have become the standard installation configuration in many communities and buildings. However, whether the quality of plastic-steel doors and windows pass the customs, what aspects should be checked during acceptance? Let me tell you!
1. The profile quality of UPVC doors and windows
The appearance of the profile should be observed. The color should be bluish white, not white as people usually think. Pay attention to whether the color of the frame and the fan of the door and window are the same, whether the appearance is uniform, and whether the cavity distribution is reasonable. Calcium carbonate is usually added as a filling material in the UPVC door and window profile formula, and some manufacturers, in order to reduce costs, if too much is added, it will become calcified plastic. The surface of doors and windows made of this plastic lacks gloss and is slightly rough. Hard and brittle, it looks rough like a stone. Normal UPVC doors and windows are usually shiny and tough.
2. Reinforced steel for UPVC doors and windows
According to national standards, UPVC doors and windows have different requirements for wind pressure resistance. The frames and sashes of UPVC doors and windows need to be equipped with reinforced steel. According to different heights, there are three types of reinforced steel with thicknesses of 1.2mm, 1.5mm and 2.0mm to ensure The robustness and service life of the product. In order to reduce costs, some manufacturers do not install or install reinforced steel that does not meet the requirements.
3. check the surface of doors and windows
The surface is neat and clean. This is the most superficial item in the UPVC door and window installation acceptance standard. The surface of UPVC doors and windows should be free of scratches, breakages and corners. Check to see if the doors, windows and glass are open, welded, broken, etc. during installation, and if the doors and windows are closed, whether they are not closed tightly or leaking air.
4. the gap and sealing of doors and windows
Check whether the fit gap between the various profiles is tight, whether the cuts in the fit are flush, the height difference of the overlap of the profiles, and so on. Generally, for plastic-steel doors, the main considerations are the gaps between door frames and sashes, door panel battens and door panel edging, various profile joints of shutters, sealing strips, etc.; also consider the gaps between door panels; the two door leaves are in Whether it transmits light after being closed, etc.
Similarly, for plastic-steel windows, in addition to the assembly gap of various profiles to be assembled, it is also important to whether the sealing strip is uniform and firm. The interface gap should not be greater than 1mm, which reflects the sealing performance of the window. Plastic steel doors are usually used as inner doors of buildings, and the requirements for sealing are not so high. The smaller the gap value at the joint of various profiles, the tighter the fit, and the more exquisite the assembly process, which reflects the assembly level and the accuracy of the assembly tools.
5. Check whether steel is added inside the doors and windows
When closing the house, you can use iron absorption stones to check whether the UPVC doors and windows are equipped with steel, whether there are anti-collision blocks under all sliding doors and windows, and whether the length of the anti-collision blocks is sufficient.
6. check whether it is safety glass
When inspecting the window glass, you must check whether safety glass is used. The main thing is to see if there is a 3C mark on the glass. You must know that safety glass must be used in some places, if it is on the 7th floor and above. Safety glass must be installed on the windows, and safety glass must be used if the area is larger than 1.5 square meters. In addition, safety glass must be used for balcony guardrail glass. These are directly related to the safety of occupancy, let alone careless.
7. check the error value
When closing the house, pay attention to check whether the installation error of UPVC doors and windows meets the standard. Ensure that the window frame is horizontal and vertical, and the height is consistent. Usually the diagonal length is within 2m, and the error is less than 3mm; if the diagonal length is greater than 2m, The error is less than 5mm. If the window height is within 2m, the verticality error should be less than 2mm; if the window height is greater than 2m, the error should be less than 3mm.
8. Check for water seepage
The inspection of UPVC doors and windows when closing the house must not ignore the water seepage. It is necessary to check whether there is water seepage near all the door and window frames to avoid affecting the convenience of future life.
9. the welding of UPVC doors and windows
It depends on whether the welding place is level, whether there are cracks, whether the inner and outer corner joints are clean and beautiful, use a box ruler to measure the diagonal size of UPVC doors and windows, the diagonal size difference should not be more than 3mm, the diagonal difference The smaller the display, the finer the craftsmanship, which is also conducive to installation.
Therefore, when accepting UPVC doors and windows, if any problems are found, you should consult with the developer in time, and require refurbishment, and you must check carefully during acceptance, because if there is a problem that is not found or ignored, it will affect the daily use after check-in. of.
