The present invention relates to a renovating device (1) for pipes (11, 12), especially domestic connecting pipes (12), in which the device (1) consists essentially of a chassis (10) bearing a renovating equipment consisting essentially of a bag (2) inflatable under pressure which is introduced into the domestic connection (12) to be renovated and a shuttering panel (3) which can be firmly pressed against the inner wall of the main pipe (11) so that a filler (13) used to renovate the pipe can be introduced into the space between the panel (3) and the main pipe (13).