Curtain wall seepage

There are three basic conditions leading to seepage and leakage of curtain wall: the existence of pores; The presence of water; There is a pressure difference with seepage cracks. The elimination of one or more of these basic conditions is the way to prevent water leakage: one is to minimize porosity; Second, keep out the rain, so that it does not soak the gap as far as possible; The third is to reduce the wind pressure difference at the wet gap. (1) Open a small hole on the curtain wall aluminum profile to flow to the outside, collect and discharge the water inside the curtain wall through the small gap, and drain a small amount of water in the oppressive cavity between the glass, aluminum profile and aluminum buckle. (2) In the modern curtain wall design, collecting pipes and drainage pipes can also be considered on the glass curtain wall. The water that penetrates into the cracks and enters the inside of the curtain wall is collected together and discharged to a specified indoor drainage hole smoothly through the drainage pipe. The selection of high-quality structure silicone sealant, weather resistant silicone sealant, wall glue, and to strengthen the inspection, to prevent expired use. Select high quality float glass, glass must be processed by the edge, glass size error in accordance with the standard requirements. (4) Pay attention to the control of the use of sealant environment, it is strictly prohibited to weather resistant silicone sealant construction in the open air on rainy days. The indoor temperature should not be higher than 27 degrees, and the relative humidity should not be lower than 50%. Remove dust, grease, loose material and other dirt from aluminum frame, curtain glass window or gap before glue injection. After glue injection, it should be packed tightly, smooth surface, strengthen maintenance, prevent hand mold, water, etc. ⑤ According to the requirements of the code, the glass curtain wall construction process should be layered for rain leakage performance inspection, in order to repair, control the quality of the curtain wall. The quality inspection of the glass curtain wall, hidden acceptance and engineering acceptance of two categories, hidden acceptance is carried out after the installation of the aluminum frame, mainly check the firmness of the connection steel code, check the curtain wall with the main structure of the gap node installation, expansion joint installation. Project acceptance will be carried out after the completion of the glass curtain wall project.