Currently having a loft conversion and one of our neighbours has raised concerns that our builder may not be up to scratch. This builder came recommended by some other local friends. The first potential red flag was he wanted to deviate from the insulation specified by the structural engineer but wouldn't elaborate how and then said he would do the engineers way after all. A few other niggles but then he started work and stripped the roof off. This took 2 days and then work stopped. I asked why and what was happening and was told he thought stripping would take at least 4 days and steels had been ordered but no delivery date yet. When I told neighbour they said an experienced builder would know how long stripping took and have steels ordered when we signed contract so work wasn't delayed. Is this true? I don't know what to think and feel quite scared right now. Currently sitting in my house with no roof and unsure when work will start again! Sorry to ask this in here but you are all experts.