The sealant we use is a permanently elastic putty tape that permanently seals side wall and roof joints between edge rubber and sandwich parts. The great advantage of this material is that it retains its elasticity over many years despite numerous, varying weather conditions and the outer body also remains tight in the long term. The disadvantage is that this material reacts to temperature fluctuations, i.e. it expands when hot and contracts when cold. The physical stresses acting during the journey cause this material to swell slightly. However, you can certainly remove the excess sealant carefully with a plastic knife or with a sharp-edged piece of hard rubber. This works particularly well in cold weather or on a cool morning. The cut edges should then be sealed with car wax as a precaution.
From a technical point of view, no defects are to be feared due to the abundant use of sealant. On the contrary, the tightness of your caravan is thereby warranted in the long term.