TLDR: workman did a substandard and unsafe job, is trying to charge us to put it right. AIBU to say no, he should have done it right in the first place!
Long version:
Last month we got some quotes to have work done in our house (fire fitted). We had several people quote and chose one, not the cheapest but not far off. All quotes were for the same spec - it's specialist job requiring certification of a governing body and has to be completed to specific standards.They came and did the work, we paid.
We've since had a second work man in (different job) who queried the work done by the other company - this persons job was to 'finish' the room (plaster, fix flooring, skirts) where there had been damage by the first guy (necessary damage involved in doing the first job). He is experienced in this area though does not provide the services of the first workman. He was so aghast at the work they did he gave us the name of someone he knew to come and look at it and pointed out things he felt were wrong. He then refused to finish his job, saying a) he didn't want to be party to covering up a job done badly and b) felt it would need redoing and would be a waste of money for us.
We got this third person round. He confirmed (for free and with no mention of him 'putting it right') what the second guy had said, he was pretty hacked off at the poor job done and even called the first guy up whilst at our house and essentially bollocked him. First guy agreed to come back and take a look. Third guy suggests we make a complaint to the certifying body.
First guy comes back (in the interim we have done some research and found the issues are pretty basic, should know stuff for a tradesman in this area) and we discuss the list of errors highlighted by the other fire guy. He starts fixing it. We query the fix, he says he has spoken to the governing body and that the material he is using to fix it is fine. We rang the governing body. We are advised that this is not true and put them on the phone (on speaker) to the workman. The governing body advise the material required.
Workman is now arguing that the materials needed were not included in the original quote and will need to be paid for. We are arguing that they should have been (the exact materials are actually not listed in the quote, simply "boarding out chimney breast to required standard"). Our argument is that they should have quoted the legally required materials. If they chose to try and make out quote cheaper by using sub-legal martials and we have noticed, that's their problem, not ours?
AIBU to insist they put it right, for free? And also get bloke 3 round to check again (which he offered).