Common problem 1: door and window frame bending
the reason:
1. The door and window frames are deformed by impact.
2. The material used in the door and window frame is thin and the rigidity is not enough.
Control plan:
1. The deformed frame is repaired and installed.
2. The thickness of the material used in the frame shall be in accordance with the state regulations, and the thickness of the main force-bearing members shall not be less than 1.2 mm.
3, the surrounding of the box should be suitable for filling, to prevent excessive bending inward.
Common problem 2: loose door and window frames
the reason:
1. The spacing between the anchoring iron feet is too large;
2. The material used to anchor the iron feet is too thin;
3. The method of anchoring is incorrect.
Control plan:
1. The spacing of anchoring iron feet shall not exceed 600MM, and the iron feet must be treated with anti-corrosion treatment;
2. The thickness of the material used for anchoring the iron feet is not less than 1.5MM, and the width shall not be less than 25MM;
3. According to different wall materials, different anchoring prevention schemes are adopted. The nail wall shall not be anchored by nails, and the porous bricks shall not be anchored by expansion bolts.
Common disease 3: door and window frame is not square
Cause: The card is not accurate during the installation process. The two diagonal lines of the frame are long and short, causing the frame to be unsquare. Door industry vision, your friend!
Control plan: Use the raft to temporarily fix it during installation, measure and adjust the diagonal to reach the same length, and then fix it firmly with iron feet.
Common problem 4: There is no leakage caused by sealant in the splicing part of the window frame
Control plan: Before installing the door and window frame, the hole must be inspected first, and the distance between the door and window frame and the reserved hole should be 2-3cm. If the spacing is greater than 3cm, it needs to be poured with C20 fine stone concrete and galvanized steel mesh. After 7 days, the door and window frame can be installed.
Common problem 5: the upper part of the window frame is not dense due to the mortar plug, resulting in leakage
Control plan: the gap between the door and window frame and the sub-frame should be made of elastic closed-cell material (the polyurethane foaming agent is full and sealed with weather-resistant sealant. The elastic closed-cell material (polyurethane foaming agent) is required to be applied continuously: continuous application Beating, filling, and molding at one time. The foaming agent outside the frame should be inserted into the gap before the conjunctiva hardens to prevent the outer film of the foaming agent from being damaged.
Common disease 6: The outer window stopper foaming rubber is exposed, and it is treated by cutting method to destroy the outer surface layer of the foaming rubber, causing leakage trouble.
Control plan: the styrofoam outside the door and window frame should be pressed into the gap by hand or special tools before curing.
Common disease 7: Metal lock construction is not standardized: glass frameless door metal keyhole decoration parts appear skewed, loose, fall off or higher than the floor after installation, causing the door lock to sway or difficult to lock.
Control plan: When installing the keyhole decorative cover, the hole should be opened first with a marble hole opener, and then punched with a 6mm impact drill with a depth of 4.0 to 6.0 cm. Built-in 6mm plastic expansion tube and fastened with self-tapping screws. Make sure it is level.
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