Possibly not what you want to hear but would getting a structural engineer in to look at that not another builder make more sense? Builder's have lots of practical experience in what is/isn't a problem and what is likely to happen in a given situation but they aren't qualified to make a judgement.
We used the structural engineer we used because he was cheapest of three quotes we got, I can send you his details if you like. His rate for additional site visits is still £250, but when we had one he forgot to charge us for it (or just thought the main fee was enough, not sure) so it might be worth asking how much he'd charge to come and have a look.
I've just got back from my ride and will go and have a look for those sanders shortly btw. Although I had a quick look yesterday and really don't know where I've put them...
Possibly not what you want to hear but would getting a structural engineer in to look at that not another builder make more sense? Builder's have lots of practical experience in what is/isn't a problem and what is likely to happen in a given situation but they aren't qualified to make a judgement.
We used the structural engineer we used because he was cheapest of three quotes we got, I can send you his details if you like. His rate for additional site visits is still £250, but when we had one he forgot to charge us for it (or just thought the main fee was enough, not sure) so it might be worth asking how much he'd charge to come and have a look.
I've just got back from my ride and will go and have a look for those sanders shortly btw. Although I had a quick look yesterday and really don't know where I've put them...
p.s. Sorry to hear that, that's rubbish.