Precautions for waterproof vents in curtain wall construction

1. Handling of corner yards and connectors: Before construction, clean the dust and oil on the corner yards to ensure that the corner yards are clean, so as to ensure the bonding effect between the corner yards and waterproof vents. Where the corner yard passes through the waterproof vents, the integrity of the waterproof and breathable membrane should be ensured as far as possible, and the curved flooding of the waterproof vents will completely seal the corner yard with the waterproof vents. The bond between the seal and the corner code is not less than 2cm.

2. Door and window opening treatment: Lap the waterproof vents with the window frame and door frame, apply the waterproof and breathable membrane for linear flooding sealing, and apply the waterproof and breathable membrane for curved flooding sealing at the corners. The bonding width between the seal and the window frame and door frame is not less than 2cm, and the bonding width at the corner is not less than 10cm. The installation sequence is: the lower part of the door and window frame - → the lower corner of the door and window frame → the side frame of the door and window frame - + the upper corner of the door and window frame - → the upper part of the door and window frame - + sealing.

3. During the construction of the roof, the laying of the waterproof vents should be along the downstream direction of the roof, and the lap length should be 10cm. When the high-strength aluminum alloy bracket of the roof passes through the waterproof and breathable membrane, the aluminum alloy bracket and the waterproof vents junction. The rubber strip wraps around the ring for sealing.

4. Waterproof vents should not be exposed to ultraviolet rays for a long time. In order to avoid damage after construction, the exterior finishing work should be completed as soon as possible.

5. Try to avoid penetration and opening on the waterproof vents during the construction process, and try to ensure the integrity of the waterproof vents. If openings or penetrations are necessary, seal penetrations and openings with butyl tape.

6. The waterproof vents have no obvious flame retardant effect. We should try to avoid the use of welding for the connection parts of the open wall project. Arrange the open flame operation (including welding) before the construction of the waterproof vents. ).

7. The waterproof vents used in this project are 1.5 meters wide and 50 meters long. When laying waterproof vents, they should be laid from bottom to top, lapped along the water, lapped up and down 15cm, and lapped left and right 10cm. The cotton nails are fixed, and the fixed distance is 50cm. The rock wool nails at the fixed place are sealed with butyl tape. The size of the sealing area is based on the butyl tape covering the nail head completely.