Had a replacement boiler fitted 3 days ago. National supplier who subcontracted out to a regional Plumbing Company who sub-contracted it again to a smaller firm. Fitter was Gas Safe registered but the quality of his workmanship was poor. He worked flat out but by 8.30pm he was rushing to finish. He had to adjust his own pipework again to make the magnetic and scale filters accessible. For some reason he filled the back of the upper compression fittings (one 22mm and one 15mm) with solder. Boiler was commissioned and work and he left. I didn’t notice the ‘captive’ compression fittings till the next day. Owing to the tightness against the wall it will now be impossible to replace a 15mm isolating valve that isolates the filling loop or the upper 90 degree isolator-bend that joins the magnetic filter. I have not paid the contracted firm in full yet and I have the tricky job of getting two levels of sub-contractors back through the main contractor to rectify. If at some point in future maintenance is needed on those fittings then a whole lot of costly re-Plumbing will be needed. Please send views and tell me if you think I am making too much of this. Thank you