True "broken pipes" with far-reaching consequences nowadays there are fortunately hardly. Very good but there are eg the durchgegammelte downspout of the gutter, the dripping siphon under the washstand and often times a small leakage at the heating pipe. Of course, something like this happens with fondness Friday or Saturday evening. Although you can call the plumber emergency service ... but also remunerate accordingly high!
For minor emergencies the sealing tape 3M / Scotch fine is appropriate. It is advisable to make before applying adhesive to place pressure as possible in order to achieve a secure success. It is reliable in the application, as long as the overlap is 1/3 of the bandwidth. And do not forget: The sealing tape is only suitable for short-term repairs - after the expert should be called! Not for nothing have such tapes in professional circles called "bungling band". ;-)