General disadvantages
Very often it is said about the fragility of coatings at low temperatures and intolerance to mechanical damage. Firstly, the likelihood that the temperature drops to zero in the living room or will be negative, minimal. The only situation is force majeure circumstances in which not only the ceiling suffers, but the entire room as a whole suffers. Secondly, it is not clear for what purpose you can be under the ceiling with a sharp object in your hands. But even if trouble happened, then mechanical damage is easily eliminated. The main thing is that the work is performed by a person with experience.