Decoration workers usually leave a gap of 3 to 5 mm when installing the panel, chamfer it at 45 degrees, then scrape the gap with putty and finally paste kraft paper. This method is the most important method used by decoration workers to prevent cracking at present. This method is not 100% to prevent cracks between panels, but to reduce the probability of cracks as much as possible.
The newly renovated ceiling will crack in a short time, and it will take a trial period, about one year. If cracks are found between panels, then we should find decoration workers to repair the cracks in the panels in time.
The above is the reason why decoration workers should leave gaps between ceiling boards, which is completely scientific. It is good for our owners to have their own ideas when decorating, but in most cases, we are amateurs in decoration, and even some simple decoration common sense, we may not understand. Therefore, when in doubt, you can ask the decoration worker and listen to his answer. Don't blindly give orders for granted. We should fully respect the opinions of professionals.