The design of aluminum alloy doors and windows has strict requirements in the specification, but in the process of house inspection, it is found that the doors and windows of some real estates have defects of varying degrees in terms of design, construction and installation details. If these problems of aluminum alloy doors and windows are not discovered in time And carry out rectification, will bring trouble to the owner's use in the future. One is that the dimensions of the doors and windows are not in compliance with the specifications. The early design is unreasonable, and it is often difficult to rectify it later, which will also bring inconvenience to life in the future. For example, the design of doors and windows has strict requirements in the specifications, but during the inspection process, it was found that the doors and windows of some real estate buildings were not designed according to the requirements, which left difficulties for the later decoration or life of the owners.

Another outstanding design flaw is that the bottom frames of doors and windows are not equipped with drains. This problem occurs in many real estate projects. If it is not discovered and rectified in time, when it rains, the rainwater will seep into the bottom frame of the door and window and cannot be discharged in time, forming accumulated water to corrode the door and window frame and shorten the service life of the door and window. If the owner does not check during the home inspection, the installation problem will be left to the owner, and the problem will not be discovered until after the renovation and occupancy. Therefore, every part must be carefully checked during the home inspection, and the developer should be asked to rectify it in time if any problem is found.

Some parts of doors and windows have special construction requirements, and they need to be constructed in place according to the regulations. If it is on the outer edge of the window, it is required to make a drip line to prevent rainwater from flowing into the window sill or indoor wall. However, during the house inspection process, it was found that many real estate buildings had water seepage into the room because the window edge did not have a drip line as required. If it is not rectified in time, when it rains in the future, the rain will still flow along the window sills indoors, and it is inevitable that the walls will become damp, moldy and hairy over time.