Part of renovating my downstairs bathroom involves installing an extractor fan. This needs an exhaust to the outside, which meant a hole needed to be made through the concrete wall, above the plaster ceiling.

And so the Boring Machine was brought in ...


Mounting holes are first drilled, and the Boring Machine is then fixed firmly to the wall. Water is fed through the machine to prevent it from overheating while it is boring.


Then the Boring Work begins ... the machine has a diamond crusted Boring Bit that cuts through the concrete.


The whole process took about 10 minutes ... and the result is a perfectly round, circular hole.


Just "... 'cause we were never being boring ... " ... next, the contractor had to fix the end cap at the end of a flexi hose to the outside of the wall. Normally, that would be easy, except that I live in an apartment, and to make it worse access from the near side of my apartment was blocked. The boss said no problem we'll go out from the other side ... and the smallest guy from the team was volunteered to do this ...


To put things in perspective ... just after the ledge of that roof there is a drop of 14 storeys ...


The exhaust hole is located under the roof tiles, above the awning ...


So the tiles had to be removed ...


and the guy crawled into the tiny workspace ...


And the work is done!


This is what it looks like from the inside:


I would show you a picture of the finished product -- the end cap fixed to the hole from the outside -- but I'm too chicken just to climb a tall ladder in the corridor to get high enough to take the photo!