Aluminum-plastic co-extruded windows and doors appear deformation, sealing and other common problems and solutions

In the field of construction, aluminum-plastic co-extruded doors and windows have become a popular choice for many buildings by virtue of their excellent thermal insulation, sound insulation and noise reduction properties. However, in the process of use, some users will encounter problems such as door and window deformation, poor sealing and so on. As the technical personnel of Liaoning MOHAN New Material Co., Ltd, the following is a detailed analysis of the causes of these problems, and give effective solutions.

First, the deformation of doors and windows

(A) cause analysis

Improper installation: during installation, if the fixed points between the door and window frames and the wall are unevenly distributed or insufficient in number, the doors and windows can not be evenly dispersed when subjected to external forces such as wind pressure, temperature changes, which leads to local deformation. In addition, the installation process to force the door and window frames into the size does not match the hole, will also make the door and window frames to withstand additional stress, long-term accumulation of deformation triggered.

Poor material quality: poor quality aluminum-plastic co-extruded profiles, its aluminum alloy skeleton strength is insufficient, the plastic outer layer of poor anti-aging properties. In a long time of sunlight, wind and rain, the profile is prone to aging, brittle, which leads to deformation of doors and windows. At the same time, if the quality of the heat insulation strip is not satisfactory, in the temperature change can not effectively buffer stress, will also accelerate the deformation of doors and windows.

The use of environmental impact: in some extreme environments, such as high temperature sun exposure, strong winds and rainstorms in the region, windows and doors for a long time to withstand the test of bad weather. High temperatures will make the plastic partially softened, reducing the overall strength of the profile; strong winds will exert greater pressure on the doors and windows, when more than the doors and windows to withstand the limit, it will cause deformation.

(ii) Solutions

Standardize the installation process: before installation, accurately measure the size of door and window openings to ensure that they meet the requirements for door and window installation. During the installation process, set up fixing points in strict accordance with the standards, the distance between fixing points is generally not more than 500mm, and evenly distributed. Use the level meter, vertical line and other tools to ensure that the level and verticality of the door and window frames are installed, and the error is controlled within the specified range.

Selection of high-quality materials: Give priority to the aluminum-plastic co-extruded doors and windows produced by regular manufacturers, check the quality inspection report of the product to ensure that the quality of the aluminum alloy skeleton, the plastic outer layer and the heat-insulating strips and other materials are up to standard. Aluminum-plastic co-extruded windows and doors produced by Liaoning Muhan adopt high-strength aluminum alloy skeleton with high-quality PVC plastic and PA66 heat-insulating strips to ensure the quality of products from the source.

Protective measures: For windows and doors installed in harsh environments, some protective measures can be taken. Such as installing awnings above the windows to reduce direct sunlight; installing windproof panels on the windward side to reduce the impact of strong winds on windows and doors.

Second, the problem of poor sealing

(A) cause analysis

Sealant aging, damage: sealant long-term exposure to the air, by ultraviolet rays, temperature changes and other factors, will gradually aging, hardening, loss of elasticity. In addition, in daily use, the friction and extrusion when opening and closing the doors and windows may also lead to damage to the sealing tape, resulting in poor sealing.

Installation is not in place: when installing the sealing tape, if the length of the tape is not appropriate, there are problems such as joints are not tight, overstretching or relaxation, which will affect the sealing effect. At the same time, the sealant between the door and window frames and the wall is unevenly applied and there are omissions, which will also lead to air leakage and water seepage.

Door and window deformation collateral impact: as mentioned above, after the deformation of doors and windows, the fit gap between the door and window fan and the window frame will change, and there will be gaps in the original tightly fitting parts, which will lead to poor sealing.

(ii) Solutions

Replacement of sealing tape: Check the status of sealing tape regularly and replace it in time when it is found to be aging or damaged. Choose good quality, weatherproof sealing tape, ensure that the length of the tape is appropriate during installation, and the joints are tightly spliced to avoid gaps.

Re-seal treatment: For the sealant between the door and window frames and the wall, if there are problems such as uneven application and leakage, the original sealant needs to be cleaned up and reapplied. When applying, make sure the sealant is full and even, covering all gaps.

Repair or replacement of deformed doors and windows: If the deformation of doors and windows leads to poor sealing, according to the degree of deformation to be dealt with. Slightly deformed doors and windows, you can adjust the hinges, locks and other accessories to improve the door and window fans and window frames with the gap; deformation of serious doors and windows, need to be replaced in a timely manner to ensure sealing performance.

Through the analysis of aluminum-plastic co-extruded windows and doors deformation, sealing problems, it is not difficult to find that as long as more attention is paid to the installation, use and maintenance process, you can effectively avoid these problems. Liaoning MOHAN New Material Co., Ltd. is always committed to providing customers with high-quality products and services to help everyone create a comfortable and beautiful living environment.