During use, system windows and doors may encounter issues such as shaking, leakage, unusual noises, and poor sealing. However, by ensuring proper installation, conducting regular maintenance, and selecting high-quality materials, these problems can be effectively addressed, thereby extending the service life of the products. The following is a detailed analysis of common issues with system windows and doors, along with their corresponding solutions:

Frequently Asked Questions and Causes

1. Wobbling issue ：

• Reason The selected profile does not meet the specifications—it has a small cross-section and insufficient strength. The internal lining configuration of the system windows and doors does not comply with usage standards. Installation nodes and other components were not executed according to regulations. Moreover, specific fixing methods appropriate for different wall types were not employed.

• Impact Vibration not only affects the user experience of doors and windows but may also pose a threat to safety.

2. Leakage issue ：

• Reason There are gaps between the system window and door frames and the wall due to the absence of cement mortar sealing or inadequate sealing with sealant; there is a loose fit between the window frame and the sash; the sealing strips on the system window and door sashes have been improperly installed; and the exterior window frame lacks dedicated drainage holes.

• Impact Leakage can cause indoor dampness, affecting living comfort and even potentially damaging interior furnishings.

3. Unusual noise issue ：

• Reason Metal components such as hinges and slides are rusted or insufficiently lubricated; hinge screws are loose.

• Impact Unusual noises can affect residents' rest and quality of life.

4. Closure leakage issue ：

• Reason The hinge angle is improperly adjusted; the sealing strip is aged or damaged; the window frame is deformed.

• Impact Poor sealing can lead to air and water leaks, reducing the thermal and sound insulation performance of doors and windows.

Solution

1. Solution to the shaking problem ：

• When purchasing system door and window frames, be sure to ensure that the specifications and quantities comply with national standards.

• Select the profile section based on the dimensions of the system window and door openings and the installation height. For casement windows, choose a profile series no smaller than 55; for sliding windows, choose a profile series no smaller than 75.

• Install strictly according to the specifications to ensure firmness and stability. During installation, have a knowledgeable person supervise the construction work.

2. Solution to the leakage problem ：

• The frame of system windows and doors should be connected to the wall using an elastic joint and sealed with sealant, leaving no gaps.

• Before installation, carefully check whether the specifications of the system doors and windows are compliant, whether the joint between the window frame and the sash is tight, and whether the installation of the sash seals complies with relevant installation regulations.

• There should be a gap of more than 50 millimeters between the window frame and the opening, allowing the windowsill to have a slight slope for water drainage and preventing water accumulation.

• Drainage holes should be drilled at the bottom of the outer frame and at the base of the track.

3. Solution to the abnormal noise issue ：

• Clean and lubricate metal components such as hinges and slide rails with WD-40 rust-preventive lubricant once a month.

• If the hinge screws are loose, use a matching screwdriver to tighten them. It is recommended to use anti-loosening screws.

4. Solution to the issue of poor sealing ：

• Adjust the hinge angle: Use an Allen wrench to make fine adjustments to the 3D hinge, with each adjustment not exceeding 5 mm.

• Replace the sealing strip: Use an EPDM ternary ethylene propylene rubber strip (weather-resistant temperature range: -40℃ to 120℃). When replacing, ensure that no old adhesive residue remains.

• Window frame correction: Use a laser level to check the degree of deformation. If the deformation exceeds 3 mm, professional correction is required.

Preventive maintenance measures

1. Quarterly maintenance Use silicone-based lubricants to maintain hardware components, and avoid using grease-based products that can attract dust.

2. Sealing inspection Conduct smoke tests every year before the rainy season and promptly address any air leaks that are detected.

3. Structural inspection Pay particular attention to the joints between window frames and walls, and use polyurethane foam sealant to fill gaps exceeding 2 mm.