We needed the bathroom redoing (mainly tiles). A good friend is an avid DIY-er / house doer-upper and has experience of doing this in their own homes so offered to do mine (paid but at a rate to reflect our friendship and the fact they're not a professional, but still not super cheap). I've visited their house and the kitchen and bathrooms look great.
Anyway, we're a few days into them doing the bathroom and it's awful. The tile patterns don't align well, the edging strips aren't cut to fit exactly (either under or over by a few mm and the corners weren't mitred, just cut straight and overlapping) and there's damage from where the old tiles have been removed.
I'm really, really unhappy but don't know how to address this without it being awkward going forward as they're a good friend (but rarely visit my house). I either will have to ask them to stop, pay for their time and get professionals in to rectify / finish the job or I let them finish and then get someone else in to start again. I don't trust that they can complete this job to a decent standard.
I don't have a lot of spare cash and have already spent hundreds on tiles and associated materials that may be wasted if we have to start over. Help - how would you address this?