How to reduce the bulging phenomenon of sealant?

1. Choose a sealant with a relatively fast curing speed. Avoid weather-resistant sealants that contain mineral oil, as oil-filled products may shrink noticeably during curing. This may reduce bulging in some cases, but such products may not meet certain project requirements for weather-resistant sealants. 2. When joints have small deformation and there is a temperature difference between panels, if the next day is cloudy, try to finish the application on the same day. Without strong sunlight exposure, the panel temperature difference is smaller and joint deformation is lower, which can help reduce bulging risk. 3. Apply at the narrowest point of the joint (for example, when the inner panel is sun-exposed during application) to help reduce bulging.