We've just had a conservatory built and have concerns about the glass roof. For about an hour in the morning and evening as it warms and cools the creaks and bangs it makes seem to be unacceptably loud. The roof glass panels are just over 3m long supported on glazing bars. the glazing company say this is normal yet the manufacturer of the glazing bars says they've never heard of the problem. We don't know where to go with this, any similar problems out there.