If you encounter an uneven wall when installing a sliding door, you must first accurately assess the unevenness of the wall. Use a ruler to press against the wall and measure the maximum gap between the wall and the ruler. If the gap is within 5 mm, it is considered slightly uneven; if the gap is between 5 and 20 mm, it is considered moderately uneven; and if the gap exceeds 20 mm, it is considered severely uneven. In addition, it is necessary to observe the distribution of the uneven wall surface, whether it is a local bulge or depression, or a large area of undulation, so as to determine the subsequent treatment plan.
For slightly uneven walls (with gaps within 5 mm), wall leveling putty can be used for treatment. First clean the wall surface, remove dust, oil and other impurities, and ensure that the wall base is solid and clean. Then use a scraper to evenly apply the leveling putty to the uneven area. The thickness of each application should not exceed 2 mm to avoid cracking. After application, use sandpaper to polish the wall surface to make it flat and smooth. After the putty is dry, check the flatness of the wall again with a ruler. If there are still small areas of unevenness, repeat the steps of applying putty and grinding until the wall flatness meets the installation requirements.
When the unevenness of the wall reaches a moderate level (the gap is between 5-20 mm), it is difficult to achieve the ideal effect by simply using putty for leveling. At this time, cement mortar can be used for leveling. First moisten the wall to prevent the water in the cement mortar from being lost too quickly and affecting the strength. Prepare cement mortar according to the ratio of cement to sand 1:3. After stirring evenly, use a spatula to apply the cement mortar to the uneven parts of the wall, from bottom to top and from left to right in sequence, to ensure even application. During the application process, use a ruler for calibration and adjust the thickness of the cement mortar in time to make the wall flat. After the cement mortar is initially set, use a wooden trowel to rub the surface to facilitate the subsequent pasting of decorative materials. After the cement mortar is leveled, it needs to be maintained to avoid direct sunlight and wind to prevent cracking.
If the wall is seriously uneven (the gap is more than 20 mm), you need to use the keel leveling method. Choose the appropriate keel material according to the wall conditions, such as light steel keel or wooden keel. First mark the installation position of the keel on the wall, and the keel spacing is generally controlled at 40-60 cm. Use expansion bolts or nails to fix the keel to the wall to ensure that the keel is installed firmly and horizontally. For areas with larger depressions, you can add gaskets between the keel and the wall for adjustment. After the keel is installed, install the base board, such as gypsum board or multilayer board, on the surface of the keel, and fix the base board to the keel with self-tapping screws. The screw spacing is 15-20 cm. After the installation is completed, check the surface flatness of the base board. If there is an error, it can be partially polished.
After completing the wall leveling using any of the above methods, a secondary calibration is required when installing the sliding door track. Place the track on the leveled wall and use a level to check the horizontality and verticality of the track. If the track is tilted or uneven, you can fine-tune it by adding a gasket under the track. The gasket should be made of materials with high hardness and good stability, such as stainless steel gaskets or nylon gaskets, to ensure that the track is installed firmly and horizontally. At the same time, check whether the track is tightly fixed to the wall, and use screws to fix the track to the wall. The screw spacing should not be too large to prevent the track from loosening.
When installing the sliding door leaf, pay attention to the matching of the door leaf and the track. Gently put the door leaf into the track, adjust the position of the door leaf so that the upper and lower pulleys of the door leaf fit tightly with the track, and the gap between the door leaves is uniform. Check whether the door leaf slides smoothly. If there is a jam, check whether the pulley is installed in place and whether there is any debris in the track. If necessary, fine-tune the pulley or clean the track to ensure that the sliding door can be used normally.
After the installation is completed, the sliding door needs to be fully inspected and debugged. Check whether the sliding door opens and closes smoothly and whether there are any abnormal noises; check whether the door leaf is well sealed against the door frame after closing. If there is a gap, adjust the position of the sealing strip or replace the sealing strip to improve the sealing. In addition, regularly perform maintenance on the sliding door, such as cleaning dust and debris in the track and adding lubricating oil to the pulley, to extend the service life of the sliding door and ensure that it can still be used stably for a long time after being installed on an uneven wall.
