A normal builder is going to come in, do his job as best he can and as quick as is possible (esp. on fixed contracts). Wet timber and plastering will contribute to shrinkage reflected in hairline or greater cracks.
It's good to see your builder has come back and had a look and told you what he thinks. I, being a complete unbeliever would get an independent opinion. That way you can be reassured that all is within normal movement figures. £150 is not bad for piece of mind and hopefully a report that you can wave at your builder.
I had a roofer (before I knew about roofing) do some tiling on a loft conversion. Told me all was done and could he paid. He said everything was fine... So I went off, dragged a hose and tested his work (inside had not been plaster boarded). I then told him to make the roof actually water tight before I paid him !! Some people will tell you what you want to hear.
Paul.
It's good to see your builder has come back and had a look and told you what he thinks. I, being a complete unbeliever would get an independent opinion. That way you can be reassured that all is within normal movement figures. £150 is not bad for piece of mind and hopefully a report that you can wave at your builder.
I had a roofer (before I knew about roofing) do some tiling on a loft conversion. Told me all was done and could he paid. He said everything was fine... So I went off, dragged a hose and tested his work (inside had not been plaster boarded). I then told him to make the roof actually water tight before I paid him !! Some people will tell you what you want to hear.
Paul.