Sealing a Chimney - how do I spot if work has been done?

[OnTheMuir]

I've had some work done on a chimney and skews. Normally attempt everything myself, but felt it was a step too far.

2 months on and we still have an issue with water penetration, so up onto the roof to discover the flaunching is in a poor state with lots of cracks.

I really want to bring this up with the roofer who did the work, but don't want to cause any issues as he is a very respected local tradesman and has done a great job on the skews. He has billed me for sealing the chimney, but I am unsure as to whether this has actually taken place due to the state of the flaunching when I got up there.

Should he have used a sealant if there are finger width gaps at the base of the chimney pots and if he has what would I expect to see if anything or how can I work out if the sealant has been used? Can I flaunch over the top of sealant?

 

[Alastairreid]

Sealing the chimney by doing what with what?

If he renewed the flaunching around the cans you would see it, same as pointing etc.

 

[OnTheMuir]

Thanks for your reply.

He didn't redo the flaunching, but claims to have used a silicone seal of some sort. I presumed something that was sprayed on or brushed on? Like a water barrier of some sort...