Beware of cracks and looseness.
When accepting the window, it is necessary to observe whether there is a big gap between the window frame and the wall, and gently shake the window to see if there is any looseness. If you find a problem, it may be an episode, so you need to call the door and window maintenance expert in time.
Multi-angle switch window
When checking the quality of the window, it is necessary to open and close the window from multiple angles and positions to see if there is abnormal sound or poor opening and closing. High-quality doors and windows, rejecting abnormal sound and looseness.
Water tightness and air tightness detection
Watertightness and airtightness of doors and windows play an important role in sound insulation and waterproof. Check carefully during acceptance, and handle problems in time when found. Glue, sealing, at most, not less. At the same time, also check whether the drain is unobstructed.
Glass quality inspection
Glass is the soul of doors and windows, so it is necessary to check the parameters, functions and damage of glass during acceptance. Insulated glass needs to be checked whether the hollow layer is clean and whether the aluminum gasket is deformed. Only when the quality is guaranteed can the owner use it with confidence.