Judging the installation quality of frameless glass doors requires a systematic inspection of four aspects: structural stability, sealing, hardware compatibility, and detailed craftsmanship. This ensures the door is safe, smooth, durable, and aesthetically pleasing.
Structural Stability Check
Vertical and Horizontal: Use a level or infrared thermometer to check if the door frame is vertical (allowable deviation ≤ 2.5mm) and horizontal (deviation ≤ 2mm). If the door is tilted, it can easily cause jamming during opening and closing or abnormal automatic closure.
Door Stability: Gently push the middle of the door leaf and observe if there is any obvious shaking. A high-quality installation should be free of looseness and abnormal noise, with the upper and lower pivots aligned and the clamps on the same vertical line.
Floor Spring Load-Bearing Capacity Matching: The floor spring must be matched to the weight of the glass. 10mm tempered glass requires approximately 25kg/㎡, and 12mm requires approximately 30kg/㎡. Insufficient load-bearing capacity will result in weak rebound or damage.
Sealing and Joint Treatment
Uniformity of Adhesive Application: Check if the adhesive application is continuous at the joints of the top limiting groove, bottom support, and door frame posts. The adhesive line should be flat, without breaks or air bubbles, forming a uniform seal.
Joint Control (Large Doors): For spliced glass, the joint width should be controlled at 2-3mm and chamfered. After filling with adhesive, smooth it to prevent dust accumulation and discoloration.
Gap Width Consistency: Use a feeler gauge to measure the gaps between the door leaf and the wall, and between the glass and the metal finish. The width error should not exceed ±0.5mm to ensure airtightness and watertightness.
Hardware Installation Quality
Glass Clamp Fixing: The clamps should be securely installed on both sides of the glass, with no loose screws and no rust on metal parts. 304 stainless steel is recommended for its strong corrosion resistance.
Door handles and locks: Handles should be installed symmetrically and centered, opening and closing smoothly; locks should close tightly without any gaps, ensuring security, especially in commercial spaces.
Opening smoothness: Open and close the door more than 5 times consecutively to check for smooth operation without jamming or abnormal noise. Floor springs should have a buffer return function to avoid impact noise.
