Genuinely not sure on this one, so want some opinions please.
Just had a new boiler fitted. Old boiler was in the kitchen, new one in the airing cupboard, so lots of pipework redone. At one point, something went a bit wrong and water came out of one of the (supposedly) stopped off pipes into the bottom of our airing cupboard when we used the tap in the bathroom. Not a lot of water - we used the tap 2 or 3 times until we worked out that the weird sound really was water. The plumber mopped up the water when he arrived maybe an hour later.
Fast forward two weeks and some staining has appeared on our lounge ceiling, kind of spreading out from underneath the airing cupboard. We're assuming that it's because of the earlier incident. We asked to plumber to come and check - he sent his partner, and from the heads up that he gave him, he is also assuming that the cause is the same incident. Plumber's partner confirmed that boiler is working fine, pipes and cupboard floor are dry so pretty sure not an ongoing problem.
I asked plumber about repairing the damage to the ceiling. He said "It just needs painting." I said we couldn't do it ourselves. He said he'd talk to his partner - I haven't heard back yet (this was Thursday morning).
So, the staining isn't really bad. I'm guessing that an application of stain block and a coat of paint will deal with it. But it's 3 years or so since we last painted the ceiling, so I imagine that we'll have to paint the whole ceiling, or it will look odd. The room is a lounge-diner, so fairly big and full of furniture that can't really go anywhere else. We also have a 4yo and an 8mo.
So, am I being unreasonable to want to plumber to make good / pay for someone else to make good?