封阳台要考虑采光、通风、保温等方面的内容，其质量不可小视，门窗相关专家提醒广大居民在购房和更换塑钢门窗时应注意以下几点： 修时,由于拆窗过程中可能会破坏墙体,最好更换门窗,在进行装修,然后在进行下一步的装修,封阳台以后可以有效的防止噪音污染,防沙尘,进行保温!选购时，一定要到正规的建材市场去。塑钢门窗的外观颜色应为青白色。颜色过白或发灰，说明其材质内的稳定成份不够，日久易老化变黄。检查五金件是否灵活，顺畅。推拉窗窗框下部应有铝滑轨，方便其更换。平开窗的密封胶条应可以自由更换，因为密封条比窗体的寿命要短。推拉窗窗扇的密封毛条中间应有固定片，这是推拉窗密封性好坏的关键。在安装过程中，应监督门窗的水平方向和垂直方向的校正。窗框与墙体之间应用发泡胶进行填充，而且窗框内外侧必须用硅铜胶进行密封，防止渗水。安装完毕后，必须将保护膜揭掉，否则会减少门窗的使用寿命。
When sealing a balcony, factors such as lighting, ventilation, and insulation should be considered, and its quality should not be underestimated. Experts on doors and windows remind residents to pay attention to the following points when purchasing a house and replacing plastic steel doors and windows: during repair, as the process of removing windows may damage the wall, it is best to replace the doors and windows before proceeding with the next step of decoration. After sealing the balcony, it can effectively prevent noise pollution, prevent sand and dust, and provide insulation! When making a purchase, be sure to go to a reputable building materials market. The appearance color of plastic steel doors and windows should be cyan white. If the color is too white or graying, it indicates that the stable components in the material are not enough and are prone to aging and yellowing over time. Check if the hardware is flexible and smooth. The lower part of the sliding window frame should have aluminum sliding rails for easy replacement. The sealing strip of the casement window should be freely replaceable because the sealing strip has a shorter lifespan than the window. The sealing strip of the sliding window sash should have a fixing piece in the middle, which is the key to the sealing performance of the sliding window. During the installation process, it is necessary to supervise the correction of the horizontal and vertical directions of the doors and windows. The gap between the window frame and the wall should be filled with foam adhesive, and the inner and outer sides of the window frame must be sealed with silicon copper adhesive to prevent water leakage. After installation, the protective film must be removed, otherwise it will reduce the service life of the doors and windows.