目前建造的居民住宅楼,大多数采用单层玻璃钢窗。出于对隔声、隔热及装饰的更高要求,不少住户将钢窗改装成铝合金窗。改窗的做法一般有换窗法和增设覆盖法两种。换窗法就是将原来的钢窗拆掉,重新换上铝合金窗。这种方法需要剔口,然后安装铝合金窗,施工比较麻烦,浪费也较大,一般家庭装修尽量不用。增设覆盖法是保留原来的钢窗,另外在钢 Most residential buildings currently built use single-glazed steel windows. Due to the higher requirements for sound insulation, heat insulation and decoration, many residents converted the steel windows into aluminum alloy windows. There are two ways to change windows: window change and additional coverage. The window change method is to remove the original steel window and replace the aluminum window. This method needs to be ticked, and then install aluminum alloy windows, the construction is more troublesome, waste is also larger, the general home decoration as far as possible not. The additional cover method is to retain the original steel window, in addition to the steel