1. The appearance should be beautiful: the surface paint film of wooden doors and windows should be smooth and bright, without quality defects such as sagging, bubbles, wrinkles, etc., without corrosion points, dead joints, and broken; The colors are coordinated, the color difference between the veneer and the wood lines should not be large, and the tree species should be the same.
2. The door and window sash should be square, not warped and deformed, and match the door and window frame: if the gap between the door and window sash and the frame is large, it is mainly because the planing and repairing during installation is not allowed or the door and window frame is not perpendicular to the ground, the door and window sash can be removed. Re-planing and repairing; if the door and window frame is not vertical, the gasket should be straightened in the frame plate.
3. The hinge should be positioned accurately and installed firmly: if the hinge is not upright, it will cause the door and window sash to not match the frame sleeve, and the door and window switch will not be smooth. You can unscrew one screw for each hinge first, then adjust the fit between the door and window sash and the frame, and then tighten all the screws after the adjustment and repair are correct. If the hinge screw is short, or the screw is screwed in all at once, the screw is not tightened, or the screw is twisted diagonally, it will cause the door and window sash to wander. Appropriate screws should be replaced, and the screws must be straight when they are installed. The screws should be screwed in 1/3 first, and the rest should be screwed in.
4. The door lock should be opened and locked smoothly, and the two parts locked on the door leaf and the door frame should be matched: the lock is not installed properly, which will cause the door leaf to open and close freely. The tongue plate should be removed, the tongue and groove should be repaired with a chisel, and the position of the tongue of the door frame should be adjusted before installation. In addition, the opening direction of the door should also meet the requirements.
5. There should be base material in the door and window cover: when the window cover is made of blockboard or MDF, the base board should be fixed on the base keel of the window frame, and then the lines are nailed: the door cover should be made of wood and then planed. , Plane straight, then assemble and install on the wall, and then cover the base board and the decorative board. Tap the side panel of the door and window cover with your hand, if there is an empty drum sound, it means that there is no base board such as blockboard on the bottom layer, and it should be removed and redone.
When buying doors and windows, not only should they look beautiful, but also check whether the edges and corners are square from different angles, and whether the basic materials are firm and so on. Only when everything is covered at the time of purchase will it be easy to install.
